* [2.6.33-rc1] System timer flooding bus on Lenovo Thinkpad W500 laptop in x86_64
@ 2009-12-21 18:12 Shawn Starr
2009-12-21 19:12 ` Shawn Starr
` (2 more replies)
0 siblings, 3 replies; 8+ messages in thread
From: Shawn Starr @ 2009-12-21 18:12 UTC (permalink / raw)
To: linux-kernel
Hello kernel devs,
I am noticing a serious problem with the system timer flooding the bus with
many interrupts for no reason. I have compiled the kernel with tickless
enabled.
Can someone provide me some debugging to find out why this is happening?
As a comparsion my quad core box has no such issue: (Running 2.6.32-rc7)
x86_64
0: 42 4 1 1 IO-APIC-edge timer
my Lenovo ThinkPad W500 (latest BIOS 3.11) laptop shows the system timer
flooding the bus (Running 2.6.33-rc1) x86_64
0: 66775 70429 IO-APIC-edge timer <-- keeps rising, rapidly
and afew minutes ...
0: 119849 124505 IO-APIC-edge timer
Same for Rescheduling interrupts rising just as fast with the timer.
This does not look right, powertop shows:
40.0% ( 62.1) <kernel IPI> : Rescheduling interrupts
22.9% ( 35.6) <interrupt> : extra timer interrupt
17.0% ( 26.4) <interrupt> : iwlagn
and another sample...
54.6% (144.8) <kernel IPI> : Rescheduling interrupts
14.6% ( 38.8) <interrupt> : extra timer interrupt
8.5% ( 22.6) <interrupt> : iwlagn
6.5% ( 17.2) <interrupt> : uhci_hcd:usb6, radeon@pci:0000:01:00.0
6.5% ( 17.2) USB device 6-1 : Microsoft Basic Optical Mouse v2.0
(Microsoft )
There is no cause for the rescheduling interrupts and extra timer interrupt to
wakeup the CPUs so much? Are there any timer issues?
cpuinfo:
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Intel(R) Core(TM)2 Duo CPU T9400 @ 2.53GHz
stepping : 10
cpu MHz : 800.000
cache size : 6144 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm
constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor
ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm ida
tpr_shadow vnmi flexpriority
bogomips : 5054.98
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
Below is lspci information:
00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory
Controller Hub (rev 07)
Subsystem: Lenovo Device 20e0
Flags: bus master, fast devsel, latency 0
Capabilities: [e0] Vendor Specific Information <?>
00:01.0 PCI bridge: Intel Corporation Mobile 4 Series Chipset PCI Express
Graphics Port (rev 07) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 00002000-00002fff
Memory behind bridge: cff00000-cfffffff
Prefetchable memory behind bridge: 00000000d0000000-00000000dfffffff
Capabilities: [88] Subsystem: Lenovo Device 20e2
Capabilities: [80] Power Management version 3
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [a0] Express Root Port (Slot+), MSI 00
Capabilities: [100] Virtual Channel <?>
Capabilities: [140] Root Complex Link <?>
Kernel driver in use: pcieport
00:03.0 Communication controller: Intel Corporation Mobile 4 Series Chipset
MEI Controller (rev 07)
Subsystem: Lenovo Device 20e6
Flags: bus master, fast devsel, latency 0, IRQ 11
Memory at fc226800 (64-bit, non-prefetchable) [size=16]
Capabilities: [50] Power Management version 3
Capabilities: [8c] MSI: Enable- Count=1/1 Maskable- 64bit+
00:19.0 Ethernet controller: Intel Corporation 82567LM Gigabit Network
Connection (rev 03)
Subsystem: Lenovo Device 20ee
Flags: bus master, fast devsel, latency 0, IRQ 29
Memory at fc200000 (32-bit, non-prefetchable) [size=128K]
Memory at fc225000 (32-bit, non-prefetchable) [size=4K]
I/O ports at 1840 [size=32]
Capabilities: [c8] Power Management version 2
Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [e0] PCI Advanced Features
Kernel driver in use: e1000e
00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #4 (rev 03) (prog-if 00 [UHCI])
Subsystem: Lenovo Device 20f0
Flags: bus master, medium devsel, latency 0, IRQ 20
I/O ports at 1860 [size=32]
Capabilities: [50] PCI Advanced Features
Kernel driver in use: uhci_hcd
00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #5 (rev 03) (prog-if 00 [UHCI])
Subsystem: Lenovo Device 20f0
Flags: bus master, medium devsel, latency 0, IRQ 21
I/O ports at 1880 [size=32]
Capabilities: [50] PCI Advanced Features
Kernel driver in use: uhci_hcd
00:1a.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #6 (rev 03) (prog-if 00 [UHCI])
Subsystem: Lenovo Device 20f0
Flags: bus master, medium devsel, latency 0, IRQ 22
I/O ports at 18a0 [size=32]
Capabilities: [50] PCI Advanced Features
Kernel driver in use: uhci_hcd
00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI
Controller #2 (rev 03) (prog-if 20 [EHCI])
Subsystem: Lenovo Device 20f1
Flags: bus master, medium devsel, latency 0, IRQ 23
Memory at fc226c00 (32-bit, non-prefetchable) [size=1K]
Capabilities: [50] Power Management version 2
Capabilities: [58] Debug port: BAR=1 offset=00a0
Capabilities: [98] PCI Advanced Features
Kernel driver in use: ehci_hcd
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio
Controller (rev 03)
Subsystem: Lenovo Device 20f2
Flags: bus master, fast devsel, latency 0, IRQ 32
Memory at fc220000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [100] Virtual Channel <?>
Capabilities: [130] Root Complex Link <?>
Kernel driver in use: HDA Intel
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1
(rev 03) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
I/O behind bridge: 00009000-00009fff
Memory behind bridge: c0000000-c01fffff
Prefetchable memory behind bridge: 00000000c0200000-00000000c03fffff
Capabilities: [40] Express Root Port (Slot+), MSI 00
Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [90] Subsystem: Lenovo Device 20f3
Capabilities: [a0] Power Management version 2
Capabilities: [100] Virtual Channel <?>
Capabilities: [180] Root Complex Link <?>
Kernel driver in use: pcieport
00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 2
(rev 03) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
I/O behind bridge: 0000a000-0000afff
Memory behind bridge: f4200000-f42fffff
Prefetchable memory behind bridge: 00000000c0400000-00000000c05fffff
Capabilities: [40] Express Root Port (Slot+), MSI 00
Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [90] Subsystem: Lenovo Device 20f3
Capabilities: [a0] Power Management version 2
Capabilities: [100] Virtual Channel <?>
Capabilities: [180] Root Complex Link <?>
Kernel driver in use: pcieport
00:1c.3 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 4
(rev 03) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=05, subordinate=0c, sec-latency=0
I/O behind bridge: 00003000-00003fff
Memory behind bridge: f8000000-f9ffffff
Prefetchable memory behind bridge: 00000000f4000000-00000000f40fffff
Capabilities: [40] Express Root Port (Slot+), MSI 00
Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [90] Subsystem: Lenovo Device 20f3
Capabilities: [a0] Power Management version 2
Capabilities: [100] Virtual Channel <?>
Capabilities: [180] Root Complex Link <?>
Kernel driver in use: pcieport
00:1c.4 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 5
(rev 03) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=0d, subordinate=14, sec-latency=0
I/O behind bridge: 00004000-00004fff
Memory behind bridge: fa000000-fbffffff
Prefetchable memory behind bridge: 00000000f4100000-00000000f41fffff
Capabilities: [40] Express Root Port (Slot+), MSI 00
Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [90] Subsystem: Lenovo Device 20f3
Capabilities: [a0] Power Management version 2
Capabilities: [100] Virtual Channel <?>
Capabilities: [180] Root Complex Link <?>
Kernel driver in use: pcieport
00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #1 (rev 03) (prog-if 00 [UHCI])
Subsystem: Lenovo Device 20f0
Flags: bus master, medium devsel, latency 0, IRQ 16
I/O ports at 18c0 [size=32]
Capabilities: [50] PCI Advanced Features
Kernel driver in use: uhci_hcd
00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #2 (rev 03) (prog-if 00 [UHCI])
Subsystem: Lenovo Device 20f0
Flags: bus master, medium devsel, latency 0, IRQ 17
I/O ports at 18e0 [size=32]
Capabilities: [50] PCI Advanced Features
Kernel driver in use: uhci_hcd
00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #3 (rev 03) (prog-if 00 [UHCI])
Subsystem: Lenovo Device 20f0
Flags: bus master, medium devsel, latency 0, IRQ 18
I/O ports at 1c00 [size=32]
Capabilities: [50] PCI Advanced Features
Kernel driver in use: uhci_hcd
00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI
Controller #1 (rev 03) (prog-if 20 [EHCI])
Subsystem: Lenovo Device 20f1
Flags: bus master, medium devsel, latency 0, IRQ 19
Memory at fc227000 (32-bit, non-prefetchable) [size=1K]
Capabilities: [50] Power Management version 2
Capabilities: [58] Debug port: BAR=1 offset=00a0
Capabilities: [98] PCI Advanced Features
Kernel driver in use: ehci_hcd
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 93) (prog-
if 01 [Subtractive decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=15, subordinate=18, sec-latency=32
I/O behind bridge: 00005000-00008fff
Memory behind bridge: f4300000-f7ffffff
Prefetchable memory behind bridge: 00000000f0000000-00000000f3ffffff
Capabilities: [50] Subsystem: Lenovo Device 20f4
00:1f.0 ISA bridge: Intel Corporation ICH9M-E LPC Interface Controller (rev
03)
Subsystem: Lenovo Device 20f5
Flags: bus master, medium devsel, latency 0
Capabilities: [e0] Vendor Specific Information <?>
00:1f.2 SATA controller: Intel Corporation ICH9M/M-E SATA AHCI Controller (rev
03) (prog-if 01 [AHCI 1.0])
Subsystem: Lenovo Device 20f8
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 30
I/O ports at 1c40 [size=8]
I/O ports at 1834 [size=4]
I/O ports at 1838 [size=8]
I/O ports at 1830 [size=4]
I/O ports at 1c20 [size=32]
Memory at fc226000 (32-bit, non-prefetchable) [size=2K]
Capabilities: [80] MSI: Enable+ Count=1/16 Maskable- 64bit-
Capabilities: [70] Power Management version 3
Capabilities: [a8] SATA HBA <?>
Capabilities: [b0] PCI Advanced Features
Kernel driver in use: ahci
00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev
03)
Subsystem: Lenovo Device 20f9
Flags: medium devsel, IRQ 23
Memory at fc227400 (64-bit, non-prefetchable) [size=256]
I/O ports at 1c60 [size=32]
Kernel driver in use: i801_smbus
01:00.0 VGA compatible controller: ATI Technologies Inc Mobility Radeon HD
3650 (prog-if 00 [VGA controller])
Subsystem: Lenovo Device 2127
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at d0000000 (32-bit, prefetchable) [size=256M]
I/O ports at 2000 [size=256]
Memory at cfff0000 (32-bit, non-prefetchable) [size=64K]
[virtual] Expansion ROM at cff00000 [disabled] [size=128K]
Capabilities: [50] Power Management version 3
Capabilities: [58] Express Legacy Endpoint, MSI 00
Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [100] Vendor Specific Information <?>
03:00.0 Network controller: Intel Corporation PRO/Wireless 5100 AGN [Shiloh]
Network Connection
Subsystem: Intel Corporation Device 1211
Flags: bus master, fast devsel, latency 0, IRQ 31
Memory at f4200000 (64-bit, non-prefetchable) [size=8K]
Capabilities: [c8] Power Management version 3
Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [e0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number 00-22-fa-ff-ff-c8-53-ce
Kernel driver in use: iwlagn
15:00.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev ba)
Subsystem: Lenovo Device 20c6
Flags: bus master, medium devsel, latency 168, IRQ 16
Memory at f4300000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=15, secondary=16, subordinate=17, sec-latency=176
Memory window 0: f0000000-f3fff000 (prefetchable)
Memory window 1: c4000000-c7fff000
I/O window 0: 00005000-000050ff
I/O window 1: 00005100-000051ff
16-bit legacy interface ports at 0001
15:00.1 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev
04) (prog-if 10 [OHCI])
Subsystem: Lenovo Device 20c7
Flags: bus master, medium devsel, latency 32, IRQ 17
Memory at f4301000 (32-bit, non-prefetchable) [size=2K]
Capabilities: [dc] Power Management version 2
Kernel driver in use: firewire_ohci
15:00.2 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host
Adapter (rev 21)
Subsystem: Lenovo Device 20c8
Flags: bus master, medium devsel, latency 32, IRQ 18
Memory at f4301800 (32-bit, non-prefetchable) [size=256]
Capabilities: [80] Power Management version 2
Kernel driver in use: sdhci-pci
15:00.3 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev ff)
(prog-if ff)
!!! Unknown header type 7f
Kernel driver in use: ricoh-mmc
15:00.4 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter
(rev 11)
Subsystem: Lenovo ThinkPad T61
Flags: bus master, medium devsel, latency 32, IRQ 11
Memory at f4302000 (32-bit, non-prefetchable) [size=256]
Capabilities: [80] Power Management version 2
15:00.5 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev 11)
Subsystem: Lenovo Device 20cb
Flags: bus master, medium devsel, latency 32, IRQ 11
Memory at f4302400 (32-bit, non-prefetchable) [size=256]
Capabilities: [80] Power Management version 2
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [2.6.33-rc1] System timer flooding bus on Lenovo Thinkpad W500 laptop in x86_64
2009-12-21 18:12 [2.6.33-rc1] System timer flooding bus on Lenovo Thinkpad W500 laptop in x86_64 Shawn Starr
@ 2009-12-21 19:12 ` Shawn Starr
2009-12-22 0:48 ` Robert Hancock
2010-01-06 19:28 ` [2.6.33-rc1] System timer flooding bus on Lenovo Thinkpad W500 laptop in x86_64 - continues in -rc3 Shawn Starr
2 siblings, 0 replies; 8+ messages in thread
From: Shawn Starr @ 2009-12-21 19:12 UTC (permalink / raw)
To: linux-kernel
On December 21, 2009 01:12:52 pm Shawn Starr wrote:
> Hello kernel devs,
>
> I am noticing a serious problem with the system timer flooding the bus with
> many interrupts for no reason. I have compiled the kernel with tickless
> enabled.
>
I should also note I have tried the following: disabling MSI, PAT and even
disabling the Local APIC to see.
Shawn.
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [2.6.33-rc1] System timer flooding bus on Lenovo Thinkpad W500 laptop in x86_64
2009-12-21 18:12 [2.6.33-rc1] System timer flooding bus on Lenovo Thinkpad W500 laptop in x86_64 Shawn Starr
2009-12-21 19:12 ` Shawn Starr
@ 2009-12-22 0:48 ` Robert Hancock
2009-12-22 0:58 ` Shawn Starr
2010-01-06 19:28 ` [2.6.33-rc1] System timer flooding bus on Lenovo Thinkpad W500 laptop in x86_64 - continues in -rc3 Shawn Starr
2 siblings, 1 reply; 8+ messages in thread
From: Robert Hancock @ 2009-12-22 0:48 UTC (permalink / raw)
To: Shawn Starr; +Cc: linux-kernel
On 12/21/2009 12:12 PM, Shawn Starr wrote:
> Hello kernel devs,
>
> I am noticing a serious problem with the system timer flooding the bus with
> many interrupts for no reason. I have compiled the kernel with tickless
> enabled.
>
> Can someone provide me some debugging to find out why this is happening?
>
> As a comparsion my quad core box has no such issue: (Running 2.6.32-rc7)
> x86_64
> 0: 42 4 1 1 IO-APIC-edge timer
That's not really a fair comparison, that box is likely using the APIC
timer (which will be on a different line) instead of the PC timer. Those
48 interrupts likely all occurred just after boot.
>
> my Lenovo ThinkPad W500 (latest BIOS 3.11) laptop shows the system timer
> flooding the bus (Running 2.6.33-rc1) x86_64
> 0: 66775 70429 IO-APIC-edge timer<-- keeps rising, rapidly
>
> and afew minutes ...
>
> 0: 119849 124505 IO-APIC-edge timer
>
> Same for Rescheduling interrupts rising just as fast with the timer.
>
> This does not look right, powertop shows:
>
> 40.0% ( 62.1)<kernel IPI> : Rescheduling interrupts
> 22.9% ( 35.6)<interrupt> : extra timer interrupt
> 17.0% ( 26.4)<interrupt> : iwlagn
>
> and another sample...
>
> 54.6% (144.8)<kernel IPI> : Rescheduling interrupts
> 14.6% ( 38.8)<interrupt> : extra timer interrupt
> 8.5% ( 22.6)<interrupt> : iwlagn
> 6.5% ( 17.2)<interrupt> : uhci_hcd:usb6, radeon@pci:0000:01:00.0
> 6.5% ( 17.2) USB device 6-1 : Microsoft Basic Optical Mouse v2.0
> (Microsoft )
>
> There is no cause for the rescheduling interrupts and extra timer interrupt to
> wakeup the CPUs so much? Are there any timer issues?
Can you post full dmesg and /proc/interrupts output?
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [2.6.33-rc1] System timer flooding bus on Lenovo Thinkpad W500 laptop in x86_64
2009-12-22 0:48 ` Robert Hancock
@ 2009-12-22 0:58 ` Shawn Starr
2009-12-22 1:07 ` Robert Hancock
0 siblings, 1 reply; 8+ messages in thread
From: Shawn Starr @ 2009-12-22 0:58 UTC (permalink / raw)
To: Robert Hancock; +Cc: linux-kernel
On December 21, 2009 07:48:04 pm Robert Hancock wrote:
> On 12/21/2009 12:12 PM, Shawn Starr wrote:
> > Hello kernel devs,
> >
> > I am noticing a serious problem with the system timer flooding the bus
> > with many interrupts for no reason. I have compiled the kernel with
> > tickless enabled.
> >
> > Can someone provide me some debugging to find out why this is happening?
> >
> > As a comparsion my quad core box has no such issue: (Running 2.6.32-rc7)
> > x86_64
> > 0: 42 4 1 1 IO-APIC-edge
> > timer
>
> That's not really a fair comparison, that box is likely using the APIC
> timer (which will be on a different line) instead of the PC timer. Those
> 48 interrupts likely all occurred just after boot.
>
> > my Lenovo ThinkPad W500 (latest BIOS 3.11) laptop shows the system timer
> > flooding the bus (Running 2.6.33-rc1) x86_64
> > 0: 66775 70429 IO-APIC-edge timer<-- keeps rising,
> > rapidly
> >
> > and afew minutes ...
> >
> > 0: 119849 124505 IO-APIC-edge timer
> >
> > Same for Rescheduling interrupts rising just as fast with the timer.
> >
> > This does not look right, powertop shows:
> >
> > 40.0% ( 62.1)<kernel IPI> : Rescheduling interrupts
> > 22.9% ( 35.6)<interrupt> : extra timer interrupt
> > 17.0% ( 26.4)<interrupt> : iwlagn
> >
> > and another sample...
> >
> > 54.6% (144.8)<kernel IPI> : Rescheduling interrupts
> > 14.6% ( 38.8)<interrupt> : extra timer interrupt
> > 8.5% ( 22.6)<interrupt> : iwlagn
> > 6.5% ( 17.2)<interrupt> : uhci_hcd:usb6, radeon@pci:0000:01:00.0
> > 6.5% ( 17.2) USB device 6-1 : Microsoft Basic Optical Mouse v2.0
> > (Microsoft )
> >
> > There is no cause for the rescheduling interrupts and extra timer
> > interrupt to wakeup the CPUs so much? Are there any timer issues?
>
> Can you post full dmesg and /proc/interrupts output?
>
This is found in http://bugzilla.kernel.org/show_bug.cgi?id=14354.
Turning off dynticks has stopped the system timer from firing so much. But
there still is an underlying irq problem because especially trying the radeon
KMS IRQ support, typing or moving the mouse causes stalls.
Thanks,
Shawn.
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [2.6.33-rc1] System timer flooding bus on Lenovo Thinkpad W500 laptop in x86_64
2009-12-22 0:58 ` Shawn Starr
@ 2009-12-22 1:07 ` Robert Hancock
2009-12-22 3:08 ` Shawn Starr
0 siblings, 1 reply; 8+ messages in thread
From: Robert Hancock @ 2009-12-22 1:07 UTC (permalink / raw)
To: Shawn Starr; +Cc: linux-kernel
On Mon, Dec 21, 2009 at 6:58 PM, Shawn Starr <shawn.starr@rogers.com> wrote:
> This is found in http://bugzilla.kernel.org/show_bug.cgi?id=14354.
Wrong bug number? That one seems unrelated.
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [2.6.33-rc1] System timer flooding bus on Lenovo Thinkpad W500 laptop in x86_64
2009-12-22 1:07 ` Robert Hancock
@ 2009-12-22 3:08 ` Shawn Starr
0 siblings, 0 replies; 8+ messages in thread
From: Shawn Starr @ 2009-12-22 3:08 UTC (permalink / raw)
To: Robert Hancock; +Cc: linux-kernel
On December 21, 2009 08:07:33 pm Robert Hancock wrote:
> On Mon, Dec 21, 2009 at 6:58 PM, Shawn Starr <shawn.starr@rogers.com> wrote:
> > This is found in http://bugzilla.kernel.org/show_bug.cgi?id=14354.
>
> Wrong bug number? That one seems unrelated.
>
Sorry, I meant http://bugzilla.kernel.org/show_bug.cgi?id=14859
The other was the old EXT4 corruption issue which was fixed.
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [2.6.33-rc1] System timer flooding bus on Lenovo Thinkpad W500 laptop in x86_64 - continues in -rc3
2009-12-21 18:12 [2.6.33-rc1] System timer flooding bus on Lenovo Thinkpad W500 laptop in x86_64 Shawn Starr
2009-12-21 19:12 ` Shawn Starr
2009-12-22 0:48 ` Robert Hancock
@ 2010-01-06 19:28 ` Shawn Starr
2010-01-17 20:48 ` [2.6.33-rc1] System timer flooding bus on Lenovo Thinkpad W500 laptop in x86_64 - update Shawn Starr
2 siblings, 1 reply; 8+ messages in thread
From: Shawn Starr @ 2010-01-06 19:28 UTC (permalink / raw)
To: linux-kernel
On December 21, 2009 01:12:52 pm Shawn Starr wrote:
> Hello kernel devs,
>
> I am noticing a serious problem with the system timer flooding the bus with
> many interrupts for no reason. I have compiled the kernel with tickless
> enabled.
This is still happening in 2.6.33-rc2, 2.6.33-rc3 (just built). Setting
nohz=off stops the system timer from incrementing so rapidly.
0: 47 1 IO-APIC-edge timer
This issue is being tracked from
http://bugzilla.kernel.org/show_bug.cgi?id=14859
However, there are a high number of Rescheduling interrupts occurring. There
are still generic IRQ issues.
If the timer/irq folks have any patches for me to test, I'd be glad to try
them.
Thanks,
Shawn.
>
> Can someone provide me some debugging to find out why this is happening?
>
> As a comparsion my quad core box has no such issue: (Running 2.6.32-rc7)
> x86_64
> 0: 42 4 1 1 IO-APIC-edge timer
>
> my Lenovo ThinkPad W500 (latest BIOS 3.11) laptop shows the system timer
> flooding the bus (Running 2.6.33-rc1) x86_64
> 0: 66775 70429 IO-APIC-edge timer <-- keeps rising,
> rapidly
>
> and afew minutes ...
>
> 0: 119849 124505 IO-APIC-edge timer
>
> Same for Rescheduling interrupts rising just as fast with the timer.
>
> This does not look right, powertop shows:
>
> 40.0% ( 62.1) <kernel IPI> : Rescheduling interrupts
> 22.9% ( 35.6) <interrupt> : extra timer interrupt
> 17.0% ( 26.4) <interrupt> : iwlagn
>
> and another sample...
>
> 54.6% (144.8) <kernel IPI> : Rescheduling interrupts
> 14.6% ( 38.8) <interrupt> : extra timer interrupt
> 8.5% ( 22.6) <interrupt> : iwlagn
> 6.5% ( 17.2) <interrupt> : uhci_hcd:usb6, radeon@pci:0000:01:00.0
> 6.5% ( 17.2) USB device 6-1 : Microsoft Basic Optical Mouse v2.0
> (Microsoft )
>
> There is no cause for the rescheduling interrupts and extra timer interrupt
> to wakeup the CPUs so much? Are there any timer issues?
>
> cpuinfo:
>
> processor : 0
> vendor_id : GenuineIntel
> cpu family : 6
> model : 23
> model name : Intel(R) Core(TM)2 Duo CPU T9400 @ 2.53GHz
> stepping : 10
> cpu MHz : 800.000
> cache size : 6144 KB
> physical id : 0
> siblings : 2
> core id : 0
> cpu cores : 2
> apicid : 0
> initial apicid : 0
> fpu : yes
> fpu_exception : yes
> cpuid level : 13
> wp : yes
> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
> cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx
> lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64
> monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm
> ida tpr_shadow vnmi flexpriority
> bogomips : 5054.98
> clflush size : 64
> cache_alignment : 64
> address sizes : 36 bits physical, 48 bits virtual
> power management:
>
>
> Below is lspci information:
>
> 00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory
> Controller Hub (rev 07)
> Subsystem: Lenovo Device 20e0
> Flags: bus master, fast devsel, latency 0
> Capabilities: [e0] Vendor Specific Information <?>
>
> 00:01.0 PCI bridge: Intel Corporation Mobile 4 Series Chipset PCI Express
> Graphics Port (rev 07) (prog-if 00 [Normal decode])
> Flags: bus master, fast devsel, latency 0
> Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
> I/O behind bridge: 00002000-00002fff
> Memory behind bridge: cff00000-cfffffff
> Prefetchable memory behind bridge:
> 00000000d0000000-00000000dfffffff Capabilities: [88] Subsystem: Lenovo
> Device 20e2
> Capabilities: [80] Power Management version 3
> Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
> Capabilities: [a0] Express Root Port (Slot+), MSI 00
> Capabilities: [100] Virtual Channel <?>
> Capabilities: [140] Root Complex Link <?>
> Kernel driver in use: pcieport
>
> 00:03.0 Communication controller: Intel Corporation Mobile 4 Series Chipset
> MEI Controller (rev 07)
> Subsystem: Lenovo Device 20e6
> Flags: bus master, fast devsel, latency 0, IRQ 11
> Memory at fc226800 (64-bit, non-prefetchable) [size=16]
> Capabilities: [50] Power Management version 3
> Capabilities: [8c] MSI: Enable- Count=1/1 Maskable- 64bit+
>
> 00:19.0 Ethernet controller: Intel Corporation 82567LM Gigabit Network
> Connection (rev 03)
> Subsystem: Lenovo Device 20ee
> Flags: bus master, fast devsel, latency 0, IRQ 29
> Memory at fc200000 (32-bit, non-prefetchable) [size=128K]
> Memory at fc225000 (32-bit, non-prefetchable) [size=4K]
> I/O ports at 1840 [size=32]
> Capabilities: [c8] Power Management version 2
> Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
> Capabilities: [e0] PCI Advanced Features
> Kernel driver in use: e1000e
>
> 00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
> Controller #4 (rev 03) (prog-if 00 [UHCI])
> Subsystem: Lenovo Device 20f0
> Flags: bus master, medium devsel, latency 0, IRQ 20
> I/O ports at 1860 [size=32]
> Capabilities: [50] PCI Advanced Features
> Kernel driver in use: uhci_hcd
>
> 00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
> Controller #5 (rev 03) (prog-if 00 [UHCI])
> Subsystem: Lenovo Device 20f0
> Flags: bus master, medium devsel, latency 0, IRQ 21
> I/O ports at 1880 [size=32]
> Capabilities: [50] PCI Advanced Features
> Kernel driver in use: uhci_hcd
>
> 00:1a.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
> Controller #6 (rev 03) (prog-if 00 [UHCI])
> Subsystem: Lenovo Device 20f0
> Flags: bus master, medium devsel, latency 0, IRQ 22
> I/O ports at 18a0 [size=32]
> Capabilities: [50] PCI Advanced Features
> Kernel driver in use: uhci_hcd
>
> 00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI
> Controller #2 (rev 03) (prog-if 20 [EHCI])
> Subsystem: Lenovo Device 20f1
> Flags: bus master, medium devsel, latency 0, IRQ 23
> Memory at fc226c00 (32-bit, non-prefetchable) [size=1K]
> Capabilities: [50] Power Management version 2
> Capabilities: [58] Debug port: BAR=1 offset=00a0
> Capabilities: [98] PCI Advanced Features
> Kernel driver in use: ehci_hcd
>
> 00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio
> Controller (rev 03)
> Subsystem: Lenovo Device 20f2
> Flags: bus master, fast devsel, latency 0, IRQ 32
> Memory at fc220000 (64-bit, non-prefetchable) [size=16K]
> Capabilities: [50] Power Management version 2
> Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
> Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
> Capabilities: [100] Virtual Channel <?>
> Capabilities: [130] Root Complex Link <?>
> Kernel driver in use: HDA Intel
>
> 00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port
> 1 (rev 03) (prog-if 00 [Normal decode])
> Flags: bus master, fast devsel, latency 0
> Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
> I/O behind bridge: 00009000-00009fff
> Memory behind bridge: c0000000-c01fffff
> Prefetchable memory behind bridge:
> 00000000c0200000-00000000c03fffff Capabilities: [40] Express Root Port
> (Slot+), MSI 00
> Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
> Capabilities: [90] Subsystem: Lenovo Device 20f3
> Capabilities: [a0] Power Management version 2
> Capabilities: [100] Virtual Channel <?>
> Capabilities: [180] Root Complex Link <?>
> Kernel driver in use: pcieport
>
> 00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port
> 2 (rev 03) (prog-if 00 [Normal decode])
> Flags: bus master, fast devsel, latency 0
> Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
> I/O behind bridge: 0000a000-0000afff
> Memory behind bridge: f4200000-f42fffff
> Prefetchable memory behind bridge:
> 00000000c0400000-00000000c05fffff Capabilities: [40] Express Root Port
> (Slot+), MSI 00
> Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
> Capabilities: [90] Subsystem: Lenovo Device 20f3
> Capabilities: [a0] Power Management version 2
> Capabilities: [100] Virtual Channel <?>
> Capabilities: [180] Root Complex Link <?>
> Kernel driver in use: pcieport
>
> 00:1c.3 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port
> 4 (rev 03) (prog-if 00 [Normal decode])
> Flags: bus master, fast devsel, latency 0
> Bus: primary=00, secondary=05, subordinate=0c, sec-latency=0
> I/O behind bridge: 00003000-00003fff
> Memory behind bridge: f8000000-f9ffffff
> Prefetchable memory behind bridge:
> 00000000f4000000-00000000f40fffff Capabilities: [40] Express Root Port
> (Slot+), MSI 00
> Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
> Capabilities: [90] Subsystem: Lenovo Device 20f3
> Capabilities: [a0] Power Management version 2
> Capabilities: [100] Virtual Channel <?>
> Capabilities: [180] Root Complex Link <?>
> Kernel driver in use: pcieport
>
> 00:1c.4 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port
> 5 (rev 03) (prog-if 00 [Normal decode])
> Flags: bus master, fast devsel, latency 0
> Bus: primary=00, secondary=0d, subordinate=14, sec-latency=0
> I/O behind bridge: 00004000-00004fff
> Memory behind bridge: fa000000-fbffffff
> Prefetchable memory behind bridge:
> 00000000f4100000-00000000f41fffff Capabilities: [40] Express Root Port
> (Slot+), MSI 00
> Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
> Capabilities: [90] Subsystem: Lenovo Device 20f3
> Capabilities: [a0] Power Management version 2
> Capabilities: [100] Virtual Channel <?>
> Capabilities: [180] Root Complex Link <?>
> Kernel driver in use: pcieport
>
> 00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
> Controller #1 (rev 03) (prog-if 00 [UHCI])
> Subsystem: Lenovo Device 20f0
> Flags: bus master, medium devsel, latency 0, IRQ 16
> I/O ports at 18c0 [size=32]
> Capabilities: [50] PCI Advanced Features
> Kernel driver in use: uhci_hcd
>
> 00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
> Controller #2 (rev 03) (prog-if 00 [UHCI])
> Subsystem: Lenovo Device 20f0
> Flags: bus master, medium devsel, latency 0, IRQ 17
> I/O ports at 18e0 [size=32]
> Capabilities: [50] PCI Advanced Features
> Kernel driver in use: uhci_hcd
>
> 00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
> Controller #3 (rev 03) (prog-if 00 [UHCI])
> Subsystem: Lenovo Device 20f0
> Flags: bus master, medium devsel, latency 0, IRQ 18
> I/O ports at 1c00 [size=32]
> Capabilities: [50] PCI Advanced Features
> Kernel driver in use: uhci_hcd
>
> 00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI
> Controller #1 (rev 03) (prog-if 20 [EHCI])
> Subsystem: Lenovo Device 20f1
> Flags: bus master, medium devsel, latency 0, IRQ 19
> Memory at fc227000 (32-bit, non-prefetchable) [size=1K]
> Capabilities: [50] Power Management version 2
> Capabilities: [58] Debug port: BAR=1 offset=00a0
> Capabilities: [98] PCI Advanced Features
> Kernel driver in use: ehci_hcd
>
> 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 93)
> (prog- if 01 [Subtractive decode])
> Flags: bus master, fast devsel, latency 0
> Bus: primary=00, secondary=15, subordinate=18, sec-latency=32
> I/O behind bridge: 00005000-00008fff
> Memory behind bridge: f4300000-f7ffffff
> Prefetchable memory behind bridge:
> 00000000f0000000-00000000f3ffffff Capabilities: [50] Subsystem: Lenovo
> Device 20f4
>
> 00:1f.0 ISA bridge: Intel Corporation ICH9M-E LPC Interface Controller (rev
> 03)
> Subsystem: Lenovo Device 20f5
> Flags: bus master, medium devsel, latency 0
> Capabilities: [e0] Vendor Specific Information <?>
>
> 00:1f.2 SATA controller: Intel Corporation ICH9M/M-E SATA AHCI Controller
> (rev 03) (prog-if 01 [AHCI 1.0])
> Subsystem: Lenovo Device 20f8
> Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 30
> I/O ports at 1c40 [size=8]
> I/O ports at 1834 [size=4]
> I/O ports at 1838 [size=8]
> I/O ports at 1830 [size=4]
> I/O ports at 1c20 [size=32]
> Memory at fc226000 (32-bit, non-prefetchable) [size=2K]
> Capabilities: [80] MSI: Enable+ Count=1/16 Maskable- 64bit-
> Capabilities: [70] Power Management version 3
> Capabilities: [a8] SATA HBA <?>
> Capabilities: [b0] PCI Advanced Features
> Kernel driver in use: ahci
>
> 00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev
> 03)
> Subsystem: Lenovo Device 20f9
> Flags: medium devsel, IRQ 23
> Memory at fc227400 (64-bit, non-prefetchable) [size=256]
> I/O ports at 1c60 [size=32]
> Kernel driver in use: i801_smbus
>
> 01:00.0 VGA compatible controller: ATI Technologies Inc Mobility Radeon HD
> 3650 (prog-if 00 [VGA controller])
> Subsystem: Lenovo Device 2127
> Flags: bus master, fast devsel, latency 0, IRQ 16
> Memory at d0000000 (32-bit, prefetchable) [size=256M]
> I/O ports at 2000 [size=256]
> Memory at cfff0000 (32-bit, non-prefetchable) [size=64K]
> [virtual] Expansion ROM at cff00000 [disabled] [size=128K]
> Capabilities: [50] Power Management version 3
> Capabilities: [58] Express Legacy Endpoint, MSI 00
> Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit+
> Capabilities: [100] Vendor Specific Information <?>
>
> 03:00.0 Network controller: Intel Corporation PRO/Wireless 5100 AGN
> [Shiloh] Network Connection
> Subsystem: Intel Corporation Device 1211
> Flags: bus master, fast devsel, latency 0, IRQ 31
> Memory at f4200000 (64-bit, non-prefetchable) [size=8K]
> Capabilities: [c8] Power Management version 3
> Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
> Capabilities: [e0] Express Endpoint, MSI 00
> Capabilities: [100] Advanced Error Reporting
> Capabilities: [140] Device Serial Number 00-22-fa-ff-ff-c8-53-ce
> Kernel driver in use: iwlagn
>
> 15:00.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev ba)
> Subsystem: Lenovo Device 20c6
> Flags: bus master, medium devsel, latency 168, IRQ 16
> Memory at f4300000 (32-bit, non-prefetchable) [size=4K]
> Bus: primary=15, secondary=16, subordinate=17, sec-latency=176
> Memory window 0: f0000000-f3fff000 (prefetchable)
> Memory window 1: c4000000-c7fff000
> I/O window 0: 00005000-000050ff
> I/O window 1: 00005100-000051ff
> 16-bit legacy interface ports at 0001
>
> 15:00.1 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev
> 04) (prog-if 10 [OHCI])
> Subsystem: Lenovo Device 20c7
> Flags: bus master, medium devsel, latency 32, IRQ 17
> Memory at f4301000 (32-bit, non-prefetchable) [size=2K]
> Capabilities: [dc] Power Management version 2
> Kernel driver in use: firewire_ohci
>
> 15:00.2 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host
> Adapter (rev 21)
> Subsystem: Lenovo Device 20c8
> Flags: bus master, medium devsel, latency 32, IRQ 18
> Memory at f4301800 (32-bit, non-prefetchable) [size=256]
> Capabilities: [80] Power Management version 2
> Kernel driver in use: sdhci-pci
>
> 15:00.3 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev ff)
> (prog-if ff)
> !!! Unknown header type 7f
> Kernel driver in use: ricoh-mmc
>
> 15:00.4 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host
> Adapter (rev 11)
> Subsystem: Lenovo ThinkPad T61
> Flags: bus master, medium devsel, latency 32, IRQ 11
> Memory at f4302000 (32-bit, non-prefetchable) [size=256]
> Capabilities: [80] Power Management version 2
>
> 15:00.5 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev 11)
> Subsystem: Lenovo Device 20cb
> Flags: bus master, medium devsel, latency 32, IRQ 11
> Memory at f4302400 (32-bit, non-prefetchable) [size=256]
> Capabilities: [80] Power Management version 2
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [2.6.33-rc1] System timer flooding bus on Lenovo Thinkpad W500 laptop in x86_64 - update
2010-01-06 19:28 ` [2.6.33-rc1] System timer flooding bus on Lenovo Thinkpad W500 laptop in x86_64 - continues in -rc3 Shawn Starr
@ 2010-01-17 20:48 ` Shawn Starr
0 siblings, 0 replies; 8+ messages in thread
From: Shawn Starr @ 2010-01-17 20:48 UTC (permalink / raw)
To: linux-kernel; +Cc: Rafael J. Wysocki, Kernel Testers List
On Wednesday 06 January 2010 14:28:04 Shawn Starr wrote:
2.6.33-rc4 (Sun Jan 17 04:26:20 EST 2010 git snapshot) has different behavour.
I cannot enable dynamic ticks. Must boot with nohz=off.
The rescheduling interrupts no longer is increasing rapidly, seems to be a
normal rescheduling period. However, enabling dynamic ticks will cause the
system timer on irq 0 to fire too often and then cause the CPUs to reschedule
interrupts too much.
Powertop shows the following with A/C plugged in.
Cn Avg residency P-states (frequencies)
C0 (cpu running) ( 6.7%) 2.54 Ghz 0.7%
polling 6.4ms (93.3%) 2.54 Ghz 0.4%
C1 mwait 0.0ms ( 0.0%) 1.60 Ghz 0.2%
C2 mwait 0.0ms ( 0.0%) 800 Mhz 98.7%
C3 mwait 0.0ms ( 0.0%)
CPU0 CPU1
0: 46 1 IO-APIC-edge timer
1: 268 258 IO-APIC-edge i8042
8: 0 1 IO-APIC-edge rtc0
9: 255 257 IO-APIC-fasteoi acpi
12: 1433 1445 IO-APIC-edge i8042
16: 0 0 IO-APIC-fasteoi uhci_hcd:usb6
17: 5 2 IO-APIC-fasteoi firewire_ohci, uhci_hcd:usb7
18: 0 0 IO-APIC-fasteoi mmc0, uhci_hcd:usb8
19: 6851 6829 IO-APIC-fasteoi ehci_hcd:usb2
20: 2119 2121 IO-APIC-fasteoi uhci_hcd:usb3
21: 0 0 IO-APIC-fasteoi uhci_hcd:usb4
22: 0 0 IO-APIC-fasteoi uhci_hcd:usb5
23: 1 1 IO-APIC-fasteoi ehci_hcd:usb1
28: 78 80 PCI-MSI-edge eth0
29: 5304 5294 PCI-MSI-edge ahci
30: 5587 5613 PCI-MSI-edge iwlagn
31: 362 391 PCI-MSI-edge HDA Intel
32: 1202 1152 PCI-MSI-edge i915
NMI: 0 0 Non-maskable interrupts
LOC: 85428 86232 Local timer interrupts
SPU: 0 0 Spurious interrupts
PMI: 0 0 Performance monitoring interrupts
PND: 0 0 Performance pending work
RES: 2018 1632 Rescheduling interrupts
CAL: 70 67 Function call interrupts
TLB: 102 199 TLB shootdowns
TRM: 0 0 Thermal event interrupts
THR: 0 0 Threshold APIC interrupts
MCE: 0 0 Machine check exceptions
MCP: 2 2 Machine check polls
ERR: 1
MIS: 0
> On December 21, 2009 01:12:52 pm Shawn Starr wrote:
> > Hello kernel devs,
> >
> > I am noticing a serious problem with the system timer flooding the bus
> > with many interrupts for no reason. I have compiled the kernel with
> > tickless enabled.
>
> This is still happening in 2.6.33-rc2, 2.6.33-rc3 (just built). Setting
> nohz=off stops the system timer from incrementing so rapidly.
>
> 0: 47 1 IO-APIC-edge timer
>
> This issue is being tracked from
> http://bugzilla.kernel.org/show_bug.cgi?id=14859
>
> However, there are a high number of Rescheduling interrupts occurring.
> There are still generic IRQ issues.
>
> If the timer/irq folks have any patches for me to test, I'd be glad to try
> them.
>
> Thanks,
> Shawn.
>
> > Can someone provide me some debugging to find out why this is happening?
> >
> > As a comparsion my quad core box has no such issue: (Running 2.6.32-rc7)
> > x86_64
> >
> > 0: 42 4 1 1 IO-APIC-edge
> > timer
> >
> > my Lenovo ThinkPad W500 (latest BIOS 3.11) laptop shows the system timer
> > flooding the bus (Running 2.6.33-rc1) x86_64
> >
> > 0: 66775 70429 IO-APIC-edge timer <-- keeps rising,
> >
> > rapidly
> >
> > and afew minutes ...
> >
> > 0: 119849 124505 IO-APIC-edge timer
> >
> > Same for Rescheduling interrupts rising just as fast with the timer.
> >
> > This does not look right, powertop shows:
> >
> > 40.0% ( 62.1) <kernel IPI> : Rescheduling interrupts
> > 22.9% ( 35.6) <interrupt> : extra timer interrupt
> > 17.0% ( 26.4) <interrupt> : iwlagn
> >
> > and another sample...
> >
> > 54.6% (144.8) <kernel IPI> : Rescheduling interrupts
> > 14.6% ( 38.8) <interrupt> : extra timer interrupt
> >
> > 8.5% ( 22.6) <interrupt> : iwlagn
> > 6.5% ( 17.2) <interrupt> : uhci_hcd:usb6,
> > radeon@pci:0000:01:00.0 6.5% ( 17.2) USB device 6-1 : Microsoft
> > Basic Optical Mouse v2.0
> >
> > (Microsoft )
> >
> > There is no cause for the rescheduling interrupts and extra timer
> > interrupt to wakeup the CPUs so much? Are there any timer issues?
> >
> > cpuinfo:
> >
> > processor : 0
> > vendor_id : GenuineIntel
> > cpu family : 6
> > model : 23
> > model name : Intel(R) Core(TM)2 Duo CPU T9400 @ 2.53GHz
> > stepping : 10
> > cpu MHz : 800.000
> > cache size : 6144 KB
> > physical id : 0
> > siblings : 2
> > core id : 0
> > cpu cores : 2
> > apicid : 0
> > initial apicid : 0
> > fpu : yes
> > fpu_exception : yes
> > cpuid level : 13
> > wp : yes
> > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
> > mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe
> > syscall nx lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni
> > dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave
> > lahf_lm ida tpr_shadow vnmi flexpriority
> > bogomips : 5054.98
> > clflush size : 64
> > cache_alignment : 64
> > address sizes : 36 bits physical, 48 bits virtual
> > power management:
> >
> >
> > Below is lspci information:
> >
> > 00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory
> > Controller Hub (rev 07)
> >
> > Subsystem: Lenovo Device 20e0
> > Flags: bus master, fast devsel, latency 0
> > Capabilities: [e0] Vendor Specific Information <?>
> >
> > 00:01.0 PCI bridge: Intel Corporation Mobile 4 Series Chipset PCI Express
> > Graphics Port (rev 07) (prog-if 00 [Normal decode])
> >
> > Flags: bus master, fast devsel, latency 0
> > Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
> > I/O behind bridge: 00002000-00002fff
> > Memory behind bridge: cff00000-cfffffff
> >
> > Prefetchable memory behind bridge:
> > 00000000d0000000-00000000dfffffff Capabilities: [88] Subsystem: Lenovo
> > Device 20e2
> >
> > Capabilities: [80] Power Management version 3
> > Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
> > Capabilities: [a0] Express Root Port (Slot+), MSI 00
> > Capabilities: [100] Virtual Channel <?>
> > Capabilities: [140] Root Complex Link <?>
> > Kernel driver in use: pcieport
> >
> > 00:03.0 Communication controller: Intel Corporation Mobile 4 Series
> > Chipset MEI Controller (rev 07)
> >
> > Subsystem: Lenovo Device 20e6
> > Flags: bus master, fast devsel, latency 0, IRQ 11
> > Memory at fc226800 (64-bit, non-prefetchable) [size=16]
> > Capabilities: [50] Power Management version 3
> > Capabilities: [8c] MSI: Enable- Count=1/1 Maskable- 64bit+
> >
> > 00:19.0 Ethernet controller: Intel Corporation 82567LM Gigabit Network
> > Connection (rev 03)
> >
> > Subsystem: Lenovo Device 20ee
> > Flags: bus master, fast devsel, latency 0, IRQ 29
> > Memory at fc200000 (32-bit, non-prefetchable) [size=128K]
> > Memory at fc225000 (32-bit, non-prefetchable) [size=4K]
> > I/O ports at 1840 [size=32]
> > Capabilities: [c8] Power Management version 2
> > Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
> > Capabilities: [e0] PCI Advanced Features
> > Kernel driver in use: e1000e
> >
> > 00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
> > Controller #4 (rev 03) (prog-if 00 [UHCI])
> >
> > Subsystem: Lenovo Device 20f0
> > Flags: bus master, medium devsel, latency 0, IRQ 20
> > I/O ports at 1860 [size=32]
> > Capabilities: [50] PCI Advanced Features
> > Kernel driver in use: uhci_hcd
> >
> > 00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
> > Controller #5 (rev 03) (prog-if 00 [UHCI])
> >
> > Subsystem: Lenovo Device 20f0
> > Flags: bus master, medium devsel, latency 0, IRQ 21
> > I/O ports at 1880 [size=32]
> > Capabilities: [50] PCI Advanced Features
> > Kernel driver in use: uhci_hcd
> >
> > 00:1a.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
> > Controller #6 (rev 03) (prog-if 00 [UHCI])
> >
> > Subsystem: Lenovo Device 20f0
> > Flags: bus master, medium devsel, latency 0, IRQ 22
> > I/O ports at 18a0 [size=32]
> > Capabilities: [50] PCI Advanced Features
> > Kernel driver in use: uhci_hcd
> >
> > 00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI
> > Controller #2 (rev 03) (prog-if 20 [EHCI])
> >
> > Subsystem: Lenovo Device 20f1
> > Flags: bus master, medium devsel, latency 0, IRQ 23
> > Memory at fc226c00 (32-bit, non-prefetchable) [size=1K]
> > Capabilities: [50] Power Management version 2
> > Capabilities: [58] Debug port: BAR=1 offset=00a0
> > Capabilities: [98] PCI Advanced Features
> > Kernel driver in use: ehci_hcd
> >
> > 00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio
> > Controller (rev 03)
> >
> > Subsystem: Lenovo Device 20f2
> > Flags: bus master, fast devsel, latency 0, IRQ 32
> > Memory at fc220000 (64-bit, non-prefetchable) [size=16K]
> > Capabilities: [50] Power Management version 2
> > Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
> > Capabilities: [70] Express Root Complex Integrated Endpoint, MSI
> > 00 Capabilities: [100] Virtual Channel <?>
> > Capabilities: [130] Root Complex Link <?>
> > Kernel driver in use: HDA Intel
> >
> > 00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express
> > Port 1 (rev 03) (prog-if 00 [Normal decode])
> >
> > Flags: bus master, fast devsel, latency 0
> > Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
> > I/O behind bridge: 00009000-00009fff
> > Memory behind bridge: c0000000-c01fffff
> >
> > Prefetchable memory behind bridge:
> > 00000000c0200000-00000000c03fffff Capabilities: [40] Express Root Port
> > (Slot+), MSI 00
> >
> > Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
> > Capabilities: [90] Subsystem: Lenovo Device 20f3
> > Capabilities: [a0] Power Management version 2
> > Capabilities: [100] Virtual Channel <?>
> > Capabilities: [180] Root Complex Link <?>
> > Kernel driver in use: pcieport
> >
> > 00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express
> > Port 2 (rev 03) (prog-if 00 [Normal decode])
> >
> > Flags: bus master, fast devsel, latency 0
> > Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
> > I/O behind bridge: 0000a000-0000afff
> > Memory behind bridge: f4200000-f42fffff
> >
> > Prefetchable memory behind bridge:
> > 00000000c0400000-00000000c05fffff Capabilities: [40] Express Root Port
> > (Slot+), MSI 00
> >
> > Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
> > Capabilities: [90] Subsystem: Lenovo Device 20f3
> > Capabilities: [a0] Power Management version 2
> > Capabilities: [100] Virtual Channel <?>
> > Capabilities: [180] Root Complex Link <?>
> > Kernel driver in use: pcieport
> >
> > 00:1c.3 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express
> > Port 4 (rev 03) (prog-if 00 [Normal decode])
> >
> > Flags: bus master, fast devsel, latency 0
> > Bus: primary=00, secondary=05, subordinate=0c, sec-latency=0
> > I/O behind bridge: 00003000-00003fff
> > Memory behind bridge: f8000000-f9ffffff
> >
> > Prefetchable memory behind bridge:
> > 00000000f4000000-00000000f40fffff Capabilities: [40] Express Root Port
> > (Slot+), MSI 00
> >
> > Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
> > Capabilities: [90] Subsystem: Lenovo Device 20f3
> > Capabilities: [a0] Power Management version 2
> > Capabilities: [100] Virtual Channel <?>
> > Capabilities: [180] Root Complex Link <?>
> > Kernel driver in use: pcieport
> >
> > 00:1c.4 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express
> > Port 5 (rev 03) (prog-if 00 [Normal decode])
> >
> > Flags: bus master, fast devsel, latency 0
> > Bus: primary=00, secondary=0d, subordinate=14, sec-latency=0
> > I/O behind bridge: 00004000-00004fff
> > Memory behind bridge: fa000000-fbffffff
> >
> > Prefetchable memory behind bridge:
> > 00000000f4100000-00000000f41fffff Capabilities: [40] Express Root Port
> > (Slot+), MSI 00
> >
> > Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
> > Capabilities: [90] Subsystem: Lenovo Device 20f3
> > Capabilities: [a0] Power Management version 2
> > Capabilities: [100] Virtual Channel <?>
> > Capabilities: [180] Root Complex Link <?>
> > Kernel driver in use: pcieport
> >
> > 00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
> > Controller #1 (rev 03) (prog-if 00 [UHCI])
> >
> > Subsystem: Lenovo Device 20f0
> > Flags: bus master, medium devsel, latency 0, IRQ 16
> > I/O ports at 18c0 [size=32]
> > Capabilities: [50] PCI Advanced Features
> > Kernel driver in use: uhci_hcd
> >
> > 00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
> > Controller #2 (rev 03) (prog-if 00 [UHCI])
> >
> > Subsystem: Lenovo Device 20f0
> > Flags: bus master, medium devsel, latency 0, IRQ 17
> > I/O ports at 18e0 [size=32]
> > Capabilities: [50] PCI Advanced Features
> > Kernel driver in use: uhci_hcd
> >
> > 00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
> > Controller #3 (rev 03) (prog-if 00 [UHCI])
> >
> > Subsystem: Lenovo Device 20f0
> > Flags: bus master, medium devsel, latency 0, IRQ 18
> > I/O ports at 1c00 [size=32]
> > Capabilities: [50] PCI Advanced Features
> > Kernel driver in use: uhci_hcd
> >
> > 00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI
> > Controller #1 (rev 03) (prog-if 20 [EHCI])
> >
> > Subsystem: Lenovo Device 20f1
> > Flags: bus master, medium devsel, latency 0, IRQ 19
> > Memory at fc227000 (32-bit, non-prefetchable) [size=1K]
> > Capabilities: [50] Power Management version 2
> > Capabilities: [58] Debug port: BAR=1 offset=00a0
> > Capabilities: [98] PCI Advanced Features
> > Kernel driver in use: ehci_hcd
> >
> > 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 93)
> > (prog- if 01 [Subtractive decode])
> >
> > Flags: bus master, fast devsel, latency 0
> > Bus: primary=00, secondary=15, subordinate=18, sec-latency=32
> > I/O behind bridge: 00005000-00008fff
> > Memory behind bridge: f4300000-f7ffffff
> >
> > Prefetchable memory behind bridge:
> > 00000000f0000000-00000000f3ffffff Capabilities: [50] Subsystem: Lenovo
> > Device 20f4
> >
> > 00:1f.0 ISA bridge: Intel Corporation ICH9M-E LPC Interface Controller
> > (rev 03)
> >
> > Subsystem: Lenovo Device 20f5
> > Flags: bus master, medium devsel, latency 0
> > Capabilities: [e0] Vendor Specific Information <?>
> >
> > 00:1f.2 SATA controller: Intel Corporation ICH9M/M-E SATA AHCI Controller
> > (rev 03) (prog-if 01 [AHCI 1.0])
> >
> > Subsystem: Lenovo Device 20f8
> > Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 30
> > I/O ports at 1c40 [size=8]
> > I/O ports at 1834 [size=4]
> > I/O ports at 1838 [size=8]
> > I/O ports at 1830 [size=4]
> > I/O ports at 1c20 [size=32]
> > Memory at fc226000 (32-bit, non-prefetchable) [size=2K]
> > Capabilities: [80] MSI: Enable+ Count=1/16 Maskable- 64bit-
> > Capabilities: [70] Power Management version 3
> > Capabilities: [a8] SATA HBA <?>
> > Capabilities: [b0] PCI Advanced Features
> > Kernel driver in use: ahci
> >
> > 00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller
> > (rev 03)
> >
> > Subsystem: Lenovo Device 20f9
> > Flags: medium devsel, IRQ 23
> > Memory at fc227400 (64-bit, non-prefetchable) [size=256]
> > I/O ports at 1c60 [size=32]
> > Kernel driver in use: i801_smbus
> >
> > 01:00.0 VGA compatible controller: ATI Technologies Inc Mobility Radeon
> > HD 3650 (prog-if 00 [VGA controller])
> >
> > Subsystem: Lenovo Device 2127
> > Flags: bus master, fast devsel, latency 0, IRQ 16
> > Memory at d0000000 (32-bit, prefetchable) [size=256M]
> > I/O ports at 2000 [size=256]
> > Memory at cfff0000 (32-bit, non-prefetchable) [size=64K]
> > [virtual] Expansion ROM at cff00000 [disabled] [size=128K]
> > Capabilities: [50] Power Management version 3
> > Capabilities: [58] Express Legacy Endpoint, MSI 00
> > Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit+
> > Capabilities: [100] Vendor Specific Information <?>
> >
> > 03:00.0 Network controller: Intel Corporation PRO/Wireless 5100 AGN
> > [Shiloh] Network Connection
> >
> > Subsystem: Intel Corporation Device 1211
> > Flags: bus master, fast devsel, latency 0, IRQ 31
> > Memory at f4200000 (64-bit, non-prefetchable) [size=8K]
> > Capabilities: [c8] Power Management version 3
> > Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
> > Capabilities: [e0] Express Endpoint, MSI 00
> > Capabilities: [100] Advanced Error Reporting
> > Capabilities: [140] Device Serial Number 00-22-fa-ff-ff-c8-53-ce
> > Kernel driver in use: iwlagn
> >
> > 15:00.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev ba)
> >
> > Subsystem: Lenovo Device 20c6
> > Flags: bus master, medium devsel, latency 168, IRQ 16
> > Memory at f4300000 (32-bit, non-prefetchable) [size=4K]
> > Bus: primary=15, secondary=16, subordinate=17, sec-latency=176
> > Memory window 0: f0000000-f3fff000 (prefetchable)
> > Memory window 1: c4000000-c7fff000
> > I/O window 0: 00005000-000050ff
> > I/O window 1: 00005100-000051ff
> > 16-bit legacy interface ports at 0001
> >
> > 15:00.1 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller
> > (rev 04) (prog-if 10 [OHCI])
> >
> > Subsystem: Lenovo Device 20c7
> > Flags: bus master, medium devsel, latency 32, IRQ 17
> > Memory at f4301000 (32-bit, non-prefetchable) [size=2K]
> > Capabilities: [dc] Power Management version 2
> > Kernel driver in use: firewire_ohci
> >
> > 15:00.2 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host
> > Adapter (rev 21)
> >
> > Subsystem: Lenovo Device 20c8
> > Flags: bus master, medium devsel, latency 32, IRQ 18
> > Memory at f4301800 (32-bit, non-prefetchable) [size=256]
> > Capabilities: [80] Power Management version 2
> > Kernel driver in use: sdhci-pci
> >
> > 15:00.3 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev
> > ff) (prog-if ff)
> >
> > !!! Unknown header type 7f
> > Kernel driver in use: ricoh-mmc
> >
> > 15:00.4 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host
> > Adapter (rev 11)
> >
> > Subsystem: Lenovo ThinkPad T61
> > Flags: bus master, medium devsel, latency 32, IRQ 11
> > Memory at f4302000 (32-bit, non-prefetchable) [size=256]
> > Capabilities: [80] Power Management version 2
> >
> > 15:00.5 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev
> > 11)
> >
> > Subsystem: Lenovo Device 20cb
> > Flags: bus master, medium devsel, latency 32, IRQ 11
> > Memory at f4302400 (32-bit, non-prefetchable) [size=256]
> > Capabilities: [80] Power Management version 2
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2010-01-17 20:49 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2009-12-21 18:12 [2.6.33-rc1] System timer flooding bus on Lenovo Thinkpad W500 laptop in x86_64 Shawn Starr
2009-12-21 19:12 ` Shawn Starr
2009-12-22 0:48 ` Robert Hancock
2009-12-22 0:58 ` Shawn Starr
2009-12-22 1:07 ` Robert Hancock
2009-12-22 3:08 ` Shawn Starr
2010-01-06 19:28 ` [2.6.33-rc1] System timer flooding bus on Lenovo Thinkpad W500 laptop in x86_64 - continues in -rc3 Shawn Starr
2010-01-17 20:48 ` [2.6.33-rc1] System timer flooding bus on Lenovo Thinkpad W500 laptop in x86_64 - update Shawn Starr
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