From: Bruno Wolff III <bruno@wolff.to>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>,
Josh Boyer <jwboyer@redhat.com>,
"mingo@redhat.com" <mingo@redhat.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: Scheduler regression from caffcdd8d27ba78730d5540396ce72ad022aff2c
Date: Tue, 22 Jul 2014 07:10:01 -0500 [thread overview]
Message-ID: <20140722121001.GA30631@wolff.to> (raw)
In-Reply-To: <20140722103857.GK12054@laptop.lan>
[-- Attachment #1: Type: text/plain, Size: 316 bytes --]
On Tue, Jul 22, 2014 at 12:38:57 +0200,
Peter Zijlstra <peterz@infradead.org> wrote:
>
>Could you provide the output of cpuid and cpuid -r for your machine?
>This code is magic and I've no idea what your machine is telling it to
>do :/
I am attaching both sets of output. (I also added copies to the bug report.)
[-- Attachment #2: cpuid.out --]
[-- Type: text/plain, Size: 20500 bytes --]
CPU 0:
vendor_id = "GenuineIntel"
version information (1/eax):
processor type = primary processor (0)
family = Intel Pentium 4/Pentium D/Pentium Extreme Edition/Celeron/Xeon/Xeon MP/Itanium2, AMD Athlon 64/Athlon XP-M/Opteron/Sempron/Turion (15)
model = 0x2 (2)
stepping id = 0x9 (9)
extended family = 0x0 (0)
extended model = 0x0 (0)
(simple synth) = Intel Pentium 4 (Northwood D1) / Xeon (Prestonia D1) / Mobile Pentium 4 (Northwood D1) / Mobile Pentium 4 Processor-M (Northwood D1) / Celeron 478-pin (Northwood D1), .13um
miscellaneous (1/ebx):
process local APIC physical ID = 0x0 (0)
cpu count = 0x2 (2)
CLFLUSH line size = 0x8 (8)
brand index = 0xb (11)
brand id = 0x0b (11): Intel Xeon, .13um
feature information (1/edx):
x87 FPU on chip = true
virtual-8086 mode enhancement = true
debugging extensions = true
page size extensions = true
time stamp counter = true
RDMSR and WRMSR support = true
physical address extensions = true
machine check exception = true
CMPXCHG8B inst. = true
APIC on chip = true
SYSENTER and SYSEXIT = true
memory type range registers = true
PTE global bit = true
machine check architecture = true
conditional move/compare instruction = true
page attribute table = true
page size extension = true
processor serial number = false
CLFLUSH instruction = true
debug store = true
thermal monitor and clock ctrl = true
MMX Technology = true
FXSAVE/FXRSTOR = true
SSE extensions = true
SSE2 extensions = true
self snoop = true
hyper-threading / multi-core supported = true
therm. monitor = true
IA64 = false
pending break event = true
feature information (1/ecx):
PNI/SSE3: Prescott New Instructions = false
PCLMULDQ instruction = false
64-bit debug store = false
MONITOR/MWAIT = false
CPL-qualified debug store = false
VMX: virtual machine extensions = false
SMX: safer mode extensions = false
Enhanced Intel SpeedStep Technology = false
thermal monitor 2 = false
SSSE3 extensions = false
context ID: adaptive or shared L1 data = true
FMA instruction = false
CMPXCHG16B instruction = false
xTPR disable = true
perfmon and debug = false
process context identifiers = false
direct cache access = false
SSE4.1 extensions = false
SSE4.2 extensions = false
extended xAPIC support = false
MOVBE instruction = false
POPCNT instruction = false
time stamp counter deadline = false
AES instruction = false
XSAVE/XSTOR states = false
OS-enabled XSAVE/XSTOR = false
AVX: advanced vector extensions = false
F16C half-precision convert instruction = false
RDRAND instruction = false
hypervisor guest status = false
cache and TLB information (2):
0x50: instruction TLB: 4K & 2M/4M pages, 64 entries
0x5b: data TLB: 4K & 4M pages, 64 entries
0x66: L1 data cache: 8K, 4-way, 64 byte lines
0x40: No L3 cache
0x70: Trace cache: 12K-uop, 8-way
0x7b: L2 cache: 512K, 8-way, sectored, 64 byte lines
extended feature flags (0x80000001/edx):
SYSCALL and SYSRET instructions = false
execution disable = false
1-GB large page support = false
RDTSCP = false
64-bit extensions technology available = false
Intel feature flags (0x80000001/ecx):
LAHF/SAHF supported in 64-bit mode = false
LZCNT advanced bit manipulation = false
3DNow! PREFETCH/PREFETCHW instructions = false
brand = " Intel(R) Xeon(TM) CPU 2.66GHz"
(multi-processing synth): hyper-threaded (t=2)
(multi-processing method): Intel leaf 1
(synth) = Intel Xeon (Prestonia D1), .13um
CPU 1:
vendor_id = "GenuineIntel"
version information (1/eax):
processor type = primary processor (0)
family = Intel Pentium 4/Pentium D/Pentium Extreme Edition/Celeron/Xeon/Xeon MP/Itanium2, AMD Athlon 64/Athlon XP-M/Opteron/Sempron/Turion (15)
model = 0x2 (2)
stepping id = 0x9 (9)
extended family = 0x0 (0)
extended model = 0x0 (0)
(simple synth) = Intel Pentium 4 (Northwood D1) / Xeon (Prestonia D1) / Mobile Pentium 4 (Northwood D1) / Mobile Pentium 4 Processor-M (Northwood D1) / Celeron 478-pin (Northwood D1), .13um
miscellaneous (1/ebx):
process local APIC physical ID = 0x6 (6)
cpu count = 0x2 (2)
CLFLUSH line size = 0x8 (8)
brand index = 0xb (11)
brand id = 0x0b (11): Intel Xeon, .13um
feature information (1/edx):
x87 FPU on chip = true
virtual-8086 mode enhancement = true
debugging extensions = true
page size extensions = true
time stamp counter = true
RDMSR and WRMSR support = true
physical address extensions = true
machine check exception = true
CMPXCHG8B inst. = true
APIC on chip = true
SYSENTER and SYSEXIT = true
memory type range registers = true
PTE global bit = true
machine check architecture = true
conditional move/compare instruction = true
page attribute table = true
page size extension = true
processor serial number = false
CLFLUSH instruction = true
debug store = true
thermal monitor and clock ctrl = true
MMX Technology = true
FXSAVE/FXRSTOR = true
SSE extensions = true
SSE2 extensions = true
self snoop = true
hyper-threading / multi-core supported = true
therm. monitor = true
IA64 = false
pending break event = true
feature information (1/ecx):
PNI/SSE3: Prescott New Instructions = false
PCLMULDQ instruction = false
64-bit debug store = false
MONITOR/MWAIT = false
CPL-qualified debug store = false
VMX: virtual machine extensions = false
SMX: safer mode extensions = false
Enhanced Intel SpeedStep Technology = false
thermal monitor 2 = false
SSSE3 extensions = false
context ID: adaptive or shared L1 data = true
FMA instruction = false
CMPXCHG16B instruction = false
xTPR disable = true
perfmon and debug = false
process context identifiers = false
direct cache access = false
SSE4.1 extensions = false
SSE4.2 extensions = false
extended xAPIC support = false
MOVBE instruction = false
POPCNT instruction = false
time stamp counter deadline = false
AES instruction = false
XSAVE/XSTOR states = false
OS-enabled XSAVE/XSTOR = false
AVX: advanced vector extensions = false
F16C half-precision convert instruction = false
RDRAND instruction = false
hypervisor guest status = false
cache and TLB information (2):
0x50: instruction TLB: 4K & 2M/4M pages, 64 entries
0x5b: data TLB: 4K & 4M pages, 64 entries
0x66: L1 data cache: 8K, 4-way, 64 byte lines
0x40: No L3 cache
0x70: Trace cache: 12K-uop, 8-way
0x7b: L2 cache: 512K, 8-way, sectored, 64 byte lines
extended feature flags (0x80000001/edx):
SYSCALL and SYSRET instructions = false
execution disable = false
1-GB large page support = false
RDTSCP = false
64-bit extensions technology available = false
Intel feature flags (0x80000001/ecx):
LAHF/SAHF supported in 64-bit mode = false
LZCNT advanced bit manipulation = false
3DNow! PREFETCH/PREFETCHW instructions = false
brand = " Intel(R) Xeon(TM) CPU 2.66GHz"
(multi-processing synth): hyper-threaded (t=2)
(multi-processing method): Intel leaf 1
(synth) = Intel Xeon (Prestonia D1), .13um
CPU 2:
vendor_id = "GenuineIntel"
version information (1/eax):
processor type = primary processor (0)
family = Intel Pentium 4/Pentium D/Pentium Extreme Edition/Celeron/Xeon/Xeon MP/Itanium2, AMD Athlon 64/Athlon XP-M/Opteron/Sempron/Turion (15)
model = 0x2 (2)
stepping id = 0x9 (9)
extended family = 0x0 (0)
extended model = 0x0 (0)
(simple synth) = Intel Pentium 4 (Northwood D1) / Xeon (Prestonia D1) / Mobile Pentium 4 (Northwood D1) / Mobile Pentium 4 Processor-M (Northwood D1) / Celeron 478-pin (Northwood D1), .13um
miscellaneous (1/ebx):
process local APIC physical ID = 0x1 (1)
cpu count = 0x2 (2)
CLFLUSH line size = 0x8 (8)
brand index = 0xb (11)
brand id = 0x0b (11): Intel Xeon, .13um
feature information (1/edx):
x87 FPU on chip = true
virtual-8086 mode enhancement = true
debugging extensions = true
page size extensions = true
time stamp counter = true
RDMSR and WRMSR support = true
physical address extensions = true
machine check exception = true
CMPXCHG8B inst. = true
APIC on chip = true
SYSENTER and SYSEXIT = true
memory type range registers = true
PTE global bit = true
machine check architecture = true
conditional move/compare instruction = true
page attribute table = true
page size extension = true
processor serial number = false
CLFLUSH instruction = true
debug store = true
thermal monitor and clock ctrl = true
MMX Technology = true
FXSAVE/FXRSTOR = true
SSE extensions = true
SSE2 extensions = true
self snoop = true
hyper-threading / multi-core supported = true
therm. monitor = true
IA64 = false
pending break event = true
feature information (1/ecx):
PNI/SSE3: Prescott New Instructions = false
PCLMULDQ instruction = false
64-bit debug store = false
MONITOR/MWAIT = false
CPL-qualified debug store = false
VMX: virtual machine extensions = false
SMX: safer mode extensions = false
Enhanced Intel SpeedStep Technology = false
thermal monitor 2 = false
SSSE3 extensions = false
context ID: adaptive or shared L1 data = true
FMA instruction = false
CMPXCHG16B instruction = false
xTPR disable = true
perfmon and debug = false
process context identifiers = false
direct cache access = false
SSE4.1 extensions = false
SSE4.2 extensions = false
extended xAPIC support = false
MOVBE instruction = false
POPCNT instruction = false
time stamp counter deadline = false
AES instruction = false
XSAVE/XSTOR states = false
OS-enabled XSAVE/XSTOR = false
AVX: advanced vector extensions = false
F16C half-precision convert instruction = false
RDRAND instruction = false
hypervisor guest status = false
cache and TLB information (2):
0x50: instruction TLB: 4K & 2M/4M pages, 64 entries
0x5b: data TLB: 4K & 4M pages, 64 entries
0x66: L1 data cache: 8K, 4-way, 64 byte lines
0x40: No L3 cache
0x70: Trace cache: 12K-uop, 8-way
0x7b: L2 cache: 512K, 8-way, sectored, 64 byte lines
extended feature flags (0x80000001/edx):
SYSCALL and SYSRET instructions = false
execution disable = false
1-GB large page support = false
RDTSCP = false
64-bit extensions technology available = false
Intel feature flags (0x80000001/ecx):
LAHF/SAHF supported in 64-bit mode = false
LZCNT advanced bit manipulation = false
3DNow! PREFETCH/PREFETCHW instructions = false
brand = " Intel(R) Xeon(TM) CPU 2.66GHz"
(multi-processing synth): hyper-threaded (t=2)
(multi-processing method): Intel leaf 1
(synth) = Intel Xeon (Prestonia D1), .13um
CPU 3:
vendor_id = "GenuineIntel"
version information (1/eax):
processor type = primary processor (0)
family = Intel Pentium 4/Pentium D/Pentium Extreme Edition/Celeron/Xeon/Xeon MP/Itanium2, AMD Athlon 64/Athlon XP-M/Opteron/Sempron/Turion (15)
model = 0x2 (2)
stepping id = 0x9 (9)
extended family = 0x0 (0)
extended model = 0x0 (0)
(simple synth) = Intel Pentium 4 (Northwood D1) / Xeon (Prestonia D1) / Mobile Pentium 4 (Northwood D1) / Mobile Pentium 4 Processor-M (Northwood D1) / Celeron 478-pin (Northwood D1), .13um
miscellaneous (1/ebx):
process local APIC physical ID = 0x7 (7)
cpu count = 0x2 (2)
CLFLUSH line size = 0x8 (8)
brand index = 0xb (11)
brand id = 0x0b (11): Intel Xeon, .13um
feature information (1/edx):
x87 FPU on chip = true
virtual-8086 mode enhancement = true
debugging extensions = true
page size extensions = true
time stamp counter = true
RDMSR and WRMSR support = true
physical address extensions = true
machine check exception = true
CMPXCHG8B inst. = true
APIC on chip = true
SYSENTER and SYSEXIT = true
memory type range registers = true
PTE global bit = true
machine check architecture = true
conditional move/compare instruction = true
page attribute table = true
page size extension = true
processor serial number = false
CLFLUSH instruction = true
debug store = true
thermal monitor and clock ctrl = true
MMX Technology = true
FXSAVE/FXRSTOR = true
SSE extensions = true
SSE2 extensions = true
self snoop = true
hyper-threading / multi-core supported = true
therm. monitor = true
IA64 = false
pending break event = true
feature information (1/ecx):
PNI/SSE3: Prescott New Instructions = false
PCLMULDQ instruction = false
64-bit debug store = false
MONITOR/MWAIT = false
CPL-qualified debug store = false
VMX: virtual machine extensions = false
SMX: safer mode extensions = false
Enhanced Intel SpeedStep Technology = false
thermal monitor 2 = false
SSSE3 extensions = false
context ID: adaptive or shared L1 data = true
FMA instruction = false
CMPXCHG16B instruction = false
xTPR disable = true
perfmon and debug = false
process context identifiers = false
direct cache access = false
SSE4.1 extensions = false
SSE4.2 extensions = false
extended xAPIC support = false
MOVBE instruction = false
POPCNT instruction = false
time stamp counter deadline = false
AES instruction = false
XSAVE/XSTOR states = false
OS-enabled XSAVE/XSTOR = false
AVX: advanced vector extensions = false
F16C half-precision convert instruction = false
RDRAND instruction = false
hypervisor guest status = false
cache and TLB information (2):
0x50: instruction TLB: 4K & 2M/4M pages, 64 entries
0x5b: data TLB: 4K & 4M pages, 64 entries
0x66: L1 data cache: 8K, 4-way, 64 byte lines
0x40: No L3 cache
0x70: Trace cache: 12K-uop, 8-way
0x7b: L2 cache: 512K, 8-way, sectored, 64 byte lines
extended feature flags (0x80000001/edx):
SYSCALL and SYSRET instructions = false
execution disable = false
1-GB large page support = false
RDTSCP = false
64-bit extensions technology available = false
Intel feature flags (0x80000001/ecx):
LAHF/SAHF supported in 64-bit mode = false
LZCNT advanced bit manipulation = false
3DNow! PREFETCH/PREFETCHW instructions = false
brand = " Intel(R) Xeon(TM) CPU 2.66GHz"
(multi-processing synth): hyper-threaded (t=2)
(multi-processing method): Intel leaf 1
(synth) = Intel Xeon (Prestonia D1), .13um
[-- Attachment #3: cpuidr.out --]
[-- Type: text/plain, Size: 3228 bytes --]
CPU 0:
0x00000000 0x00: eax=0x00000002 ebx=0x756e6547 ecx=0x6c65746e edx=0x49656e69
0x00000001 0x00: eax=0x00000f29 ebx=0x0002080b ecx=0x00004400 edx=0xbfebfbff
0x00000002 0x00: eax=0x665b5001 ebx=0x00000000 ecx=0x00000000 edx=0x007b7040
0x80000000 0x00: eax=0x80000004 ebx=0x00000000 ecx=0x00000000 edx=0x00000000
0x80000001 0x00: eax=0x00000000 ebx=0x00000000 ecx=0x00000000 edx=0x00000000
0x80000002 0x00: eax=0x20202020 ebx=0x20202020 ecx=0x20202020 edx=0x20202020
0x80000003 0x00: eax=0x6e492020 ebx=0x286c6574 ecx=0x58202952 edx=0x286e6f65
0x80000004 0x00: eax=0x20294d54 ebx=0x20555043 ecx=0x36362e32 edx=0x007a4847
0x80860000 0x00: eax=0x665b5001 ebx=0x00000000 ecx=0x00000000 edx=0x007b7040
0xc0000000 0x00: eax=0x665b5001 ebx=0x00000000 ecx=0x00000000 edx=0x007b7040
CPU 1:
0x00000000 0x00: eax=0x00000002 ebx=0x756e6547 ecx=0x6c65746e edx=0x49656e69
0x00000001 0x00: eax=0x00000f29 ebx=0x0602080b ecx=0x00004400 edx=0xbfebfbff
0x00000002 0x00: eax=0x665b5001 ebx=0x00000000 ecx=0x00000000 edx=0x007b7040
0x80000000 0x00: eax=0x80000004 ebx=0x00000000 ecx=0x00000000 edx=0x00000000
0x80000001 0x00: eax=0x00000000 ebx=0x00000000 ecx=0x00000000 edx=0x00000000
0x80000002 0x00: eax=0x20202020 ebx=0x20202020 ecx=0x20202020 edx=0x20202020
0x80000003 0x00: eax=0x6e492020 ebx=0x286c6574 ecx=0x58202952 edx=0x286e6f65
0x80000004 0x00: eax=0x20294d54 ebx=0x20555043 ecx=0x36362e32 edx=0x007a4847
0x80860000 0x00: eax=0x665b5001 ebx=0x00000000 ecx=0x00000000 edx=0x007b7040
0xc0000000 0x00: eax=0x665b5001 ebx=0x00000000 ecx=0x00000000 edx=0x007b7040
CPU 2:
0x00000000 0x00: eax=0x00000002 ebx=0x756e6547 ecx=0x6c65746e edx=0x49656e69
0x00000001 0x00: eax=0x00000f29 ebx=0x0102080b ecx=0x00004400 edx=0xbfebfbff
0x00000002 0x00: eax=0x665b5001 ebx=0x00000000 ecx=0x00000000 edx=0x007b7040
0x80000000 0x00: eax=0x80000004 ebx=0x00000000 ecx=0x00000000 edx=0x00000000
0x80000001 0x00: eax=0x00000000 ebx=0x00000000 ecx=0x00000000 edx=0x00000000
0x80000002 0x00: eax=0x20202020 ebx=0x20202020 ecx=0x20202020 edx=0x20202020
0x80000003 0x00: eax=0x6e492020 ebx=0x286c6574 ecx=0x58202952 edx=0x286e6f65
0x80000004 0x00: eax=0x20294d54 ebx=0x20555043 ecx=0x36362e32 edx=0x007a4847
0x80860000 0x00: eax=0x665b5001 ebx=0x00000000 ecx=0x00000000 edx=0x007b7040
0xc0000000 0x00: eax=0x665b5001 ebx=0x00000000 ecx=0x00000000 edx=0x007b7040
CPU 3:
0x00000000 0x00: eax=0x00000002 ebx=0x756e6547 ecx=0x6c65746e edx=0x49656e69
0x00000001 0x00: eax=0x00000f29 ebx=0x0702080b ecx=0x00004400 edx=0xbfebfbff
0x00000002 0x00: eax=0x665b5001 ebx=0x00000000 ecx=0x00000000 edx=0x007b7040
0x80000000 0x00: eax=0x80000004 ebx=0x00000000 ecx=0x00000000 edx=0x00000000
0x80000001 0x00: eax=0x00000000 ebx=0x00000000 ecx=0x00000000 edx=0x00000000
0x80000002 0x00: eax=0x20202020 ebx=0x20202020 ecx=0x20202020 edx=0x20202020
0x80000003 0x00: eax=0x6e492020 ebx=0x286c6574 ecx=0x58202952 edx=0x286e6f65
0x80000004 0x00: eax=0x20294d54 ebx=0x20555043 ecx=0x36362e32 edx=0x007a4847
0x80860000 0x00: eax=0x665b5001 ebx=0x00000000 ecx=0x00000000 edx=0x007b7040
0xc0000000 0x00: eax=0x665b5001 ebx=0x00000000 ecx=0x00000000 edx=0x007b7040
next prev parent reply other threads:[~2014-07-22 12:12 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-16 14:55 Scheduler regression from caffcdd8d27ba78730d5540396ce72ad022aff2c Bruno Wolff III
2014-07-16 15:17 ` Josh Boyer
2014-07-16 19:17 ` Dietmar Eggemann
2014-07-16 19:54 ` Bruno Wolff III
2014-07-16 23:18 ` Dietmar Eggemann
2014-07-17 3:09 ` Bruno Wolff III
2014-07-17 8:57 ` Dietmar Eggemann
2014-07-17 9:04 ` Peter Zijlstra
2014-07-17 11:23 ` Dietmar Eggemann
2014-07-17 12:35 ` Peter Zijlstra
2014-07-18 5:34 ` Bruno Wolff III
2014-07-18 9:28 ` Dietmar Eggemann
2014-07-18 12:09 ` Bruno Wolff III
2014-07-18 10:16 ` Peter Zijlstra
2014-07-18 13:01 ` Bruno Wolff III
2014-07-18 14:16 ` Dietmar Eggemann
2014-07-18 14:16 ` Peter Zijlstra
2014-07-18 14:50 ` Peter Zijlstra
2014-07-18 16:16 ` Peter Zijlstra
2014-07-21 16:35 ` Bruno Wolff III
2014-07-21 16:52 ` Peter Zijlstra
2014-07-22 9:47 ` Peter Zijlstra
2014-07-22 10:38 ` Peter Zijlstra
2014-07-22 12:10 ` Bruno Wolff III [this message]
2014-07-22 13:03 ` Peter Zijlstra
2014-07-22 13:26 ` Peter Zijlstra
2014-07-22 13:35 ` Peter Zijlstra
2014-07-22 14:09 ` Bruno Wolff III
2014-07-22 14:18 ` Peter Zijlstra
2014-07-23 1:37 ` Bruno Wolff III
2014-07-23 6:51 ` Peter Zijlstra
2014-07-22 17:05 ` H. Peter Anvin
2014-07-23 15:11 ` Peter Zijlstra
2014-07-23 15:12 ` H. Peter Anvin
2014-07-24 1:45 ` Bruno Wolff III
2014-07-23 15:39 ` [tip:x86/urgent] x86, cpu: Fix cache topology for early P4-SMT tip-bot for Peter Zijlstra
2014-07-22 12:12 ` Scheduler regression from caffcdd8d27ba78730d5540396ce72ad022aff2c Dietmar Eggemann
2014-07-22 12:57 ` Bruno Wolff III
2014-07-28 8:28 ` [tip:sched/core] sched: Robustify topology setup tip-bot for Peter Zijlstra
2014-07-17 16:36 ` Scheduler regression from caffcdd8d27ba78730d5540396ce72ad022aff2c Bruno Wolff III
2014-07-17 18:43 ` Dietmar Eggemann
2014-07-17 18:54 ` Bruno Wolff III
2014-07-17 4:21 ` Bruno Wolff III
2014-07-17 4:28 ` Bruno Wolff III
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