From: Tomasz Chmielewski <mangoo@wpkg.org>
To: Avi Kivity <avi@redhat.com>
Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: strange guest slowness after some time
Date: Mon, 09 Mar 2009 13:52:02 +0100 [thread overview]
Message-ID: <49B510F2.6090205@wpkg.org> (raw)
In-Reply-To: <49B5082C.2000900@redhat.com>
Avi Kivity schrieb:
> Tomasz Chmielewski wrote:
>>>
>>> It was kvm-clock.
>>> I tried changing it to acpi_pm, jiffies, tsc, but it made no difference.
>>
>> Actually, I don't think that I checked tsc, because when I changed to
>> jiffies, the time has stopped:
>>
>> # echo jiffies >
>> /sys/devices/system/clocksource/clocksource0/current_clocksource
>> # date
>> Mon Mar 9 12:29:00 CET 2009
>> # date
>> Mon Mar 9 12:29:00 CET 2009
>> # date
>> Mon Mar 9 12:29:00 CET 2009
>
> can you post some /proc/interrupt dumps from the guest? I guess the
> timer interrupt isn't working.
We're touching another issue from my original one ("guest slowness")
here, I suppose.
But there are new interrupts here, when I set the clocksource to
"jiffies" (setting to "jiffies" also kills my serial console connection
- no key press go through to the guest any more):
# cat /proc/interrupts
CPU0
0: 104 IO-APIC-edge timer
1: 6 IO-APIC-edge i8042
4: 480 IO-APIC-edge serial
6: 2 IO-APIC-edge floppy
7: 0 IO-APIC-edge parport0
8: 2 IO-APIC-edge rtc0
9: 0 IO-APIC-fasteoi acpi
10: 4400 IO-APIC-fasteoi virtio0, virtio2, virtio4
11: 1550 IO-APIC-fasteoi uhci_hcd:usb1, virtio1, virtio3
12: 89 IO-APIC-edge i8042
14: 0 IO-APIC-edge ide0
15: 30 IO-APIC-edge ide1
NMI: 0 Non-maskable interrupts
LOC: 85231 Local timer interrupts
RES: 0 Rescheduling interrupts
CAL: 0 function call interrupts
TLB: 0 TLB shootdowns
TRM: 0 Thermal event interrupts
SPU: 0 Spurious interrupts
ERR: 0
MIS: 0
# cat /proc/interrupts
CPU0
0: 104 IO-APIC-edge timer
1: 6 IO-APIC-edge i8042
4: 486 IO-APIC-edge serial
6: 2 IO-APIC-edge floppy
7: 0 IO-APIC-edge parport0
8: 2 IO-APIC-edge rtc0
9: 0 IO-APIC-fasteoi acpi
10: 4461 IO-APIC-fasteoi virtio0, virtio2, virtio4
11: 1590 IO-APIC-fasteoi uhci_hcd:usb1, virtio1, virtio3
12: 89 IO-APIC-edge i8042
14: 0 IO-APIC-edge ide0
15: 30 IO-APIC-edge ide1
NMI: 0 Non-maskable interrupts
LOC: 108361 Local timer interrupts
RES: 0 Rescheduling interrupts
CAL: 0 function call interrupts
TLB: 0 TLB shootdowns
TRM: 0 Thermal event interrupts
SPU: 0 Spurious interrupts
ERR: 0
MIS: 0
> Does -no-kvm-irqchip help?
Nope, it doesn't - with jiffies, time always stops.
--
Tomasz Chmielewski
http://wpkg.org
next prev parent reply other threads:[~2009-03-09 12:52 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-07 15:47 strange guest slowness after some time Tomasz Chmielewski
2009-03-07 16:41 ` Johannes Baumann
2009-03-07 16:54 ` Tomasz Chmielewski
2009-03-09 9:18 ` Tomasz Chmielewski
2009-03-09 9:28 ` Tomasz Chmielewski
2009-03-19 13:03 ` Tomasz Chmielewski
2009-03-09 9:55 ` Avi Kivity
2009-03-09 10:22 ` Tomasz Chmielewski
2009-03-09 10:25 ` Avi Kivity
2009-03-09 10:31 ` Tomasz Chmielewski
2009-03-09 10:37 ` Avi Kivity
2009-03-09 10:54 ` Tomasz Chmielewski
2009-03-09 11:37 ` Tomasz Chmielewski
2009-03-09 12:14 ` Avi Kivity
2009-03-09 12:52 ` Tomasz Chmielewski [this message]
2009-03-15 15:41 ` Avi Kivity
2009-03-15 16:14 ` Avi Kivity
2009-03-15 13:19 ` Tomasz Chmielewski
2009-03-17 10:47 ` Tomasz Chmielewski
2009-03-17 11:16 ` Avi Kivity
2009-03-17 11:25 ` Tomasz Chmielewski
2009-03-17 15:32 ` Felix Leimbach
2009-03-17 15:43 ` Tomasz Chmielewski
2009-03-17 17:01 ` Felix Leimbach
2009-03-17 17:05 ` Avi Kivity
2009-03-17 18:49 ` Felix Leimbach
2009-03-18 6:36 ` Avi Kivity
2009-03-18 7:57 ` Felix Leimbach
2009-03-18 8:48 ` Avi Kivity
2009-03-18 9:08 ` Felix Leimbach
2009-03-17 17:38 ` Tomasz Chmielewski
2009-06-08 11:02 ` Felix Leimbach
2009-06-16 14:26 ` Tomasz Chmielewski
2009-03-31 8:50 ` Tomasz Chmielewski
2009-04-01 4:22 ` David S. Ahern
2009-04-01 6:21 ` Tomasz Chmielewski
2009-04-06 15:19 ` Tomasz Chmielewski
2009-04-08 0:49 ` Rusty Russell
2009-04-08 5:45 ` Tomasz Chmielewski
2009-05-26 11:49 ` Tomasz Chmielewski
2009-05-26 11:55 ` Avi Kivity
2009-05-26 12:05 ` Tomasz Chmielewski
2009-05-26 12:10 ` Avi Kivity
2009-05-26 14:07 ` Tomasz Chmielewski
2009-05-26 14:35 ` Avi Kivity
2009-05-28 14:58 ` Tomasz Chmielewski
2009-05-31 8:43 ` Avi Kivity
2009-03-17 15:52 ` Avi Kivity
2009-03-17 16:12 ` Tomasz Chmielewski
2009-03-17 17:05 ` Felix Leimbach
2009-03-17 17:10 ` Avi Kivity
2009-03-17 17:43 ` Tomasz Chmielewski
2009-03-17 18:55 ` Tomasz Chmielewski
2009-03-17 19:04 ` Felix Leimbach
2009-03-17 19:24 ` Tomasz Chmielewski
2009-03-17 20:14 ` Tomasz Chmielewski
2009-03-17 22:34 ` Tomasz Chmielewski
2009-03-17 23:02 ` Tomasz Chmielewski
2009-03-18 6:29 ` Avi Kivity
2009-03-19 4:59 ` Rusty Russell
2009-03-19 5:22 ` David S. Ahern
2009-03-19 6:08 ` David S. Ahern
2009-03-19 8:03 ` Tomasz Chmielewski
2009-03-19 14:11 ` David S. Ahern
2009-03-17 18:57 ` Felix Leimbach
2009-03-18 5:54 ` Felix Leimbach
2009-03-17 16:27 ` Tomasz Chmielewski
2009-03-17 17:14 ` Felix Leimbach
2009-03-17 17:19 ` Avi Kivity
2009-03-17 17:34 ` Tomasz Chmielewski
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