From: Avi Kivity <avi-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org>
Cc: Peter Zijlstra
<a.p.zijlstra-/NLkJaSkS4VmR6Xm/wNWPw@public.gmane.org>,
Mike Galbraith <efault-Mmb7MZpHnFY@public.gmane.org>,
Kevin Shanahan <kmshanah-biM/RbsGxha6c6uEtOJ/EA@public.gmane.org>,
"Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org>,
Linux Kernel Mailing List
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Kernel Testers List
<kernel-testers-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [Bug #12465] KVM guests stalling on 2.6.28 (bisected)
Date: Sun, 15 Mar 2009 11:56:57 +0200 [thread overview]
Message-ID: <49BCD0E9.9000305@redhat.com> (raw)
In-Reply-To: <20090315094807.GB21169-X9Un+BFzKDI@public.gmane.org>
Ingo Molnar wrote:
>> I've looked at the traces but lack the skill to make any sense
>> out of them.
>>
>
> Do you have specific questions about them that we could answer?
>
A general question: what's going on? I guess this will only be answered
by me getting my hands dirty and understanding how ftrace works and how
the output maps to what's happening. I'll look at the docs for a while.
A specific question for now is how can I identify long latency within
qemu here? As far as I can tell all qemu latencies in trace6.txt are
sub 100ms, which, while long, don't explain the guest stalling for many
seconds.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2009-03-15 9:56 UTC|newest]
Thread overview: 94+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-14 19:11 2.6.29-rc8: Reported regressions 2.6.27 -> 2.6.28 Rafael J. Wysocki
2009-03-14 19:12 ` [Bug #12061] snd_hda_intel: power_save: sound cracks on powerdown Rafael J. Wysocki
2009-03-14 19:20 ` [Bug #12337] ~100 extra wakeups reported by powertop Rafael J. Wysocki
2009-03-14 19:20 ` [Bug #12209] oldish top core dumps (in its meminfo() function) Rafael J. Wysocki
2009-03-14 19:20 ` [Bug #12404] Oops in 2.6.28-rc9 and -rc8 -- mtrr issues / e1000e Rafael J. Wysocki
2009-03-14 19:20 ` [Bug #12208] uml is very slow on 2.6.28 host Rafael J. Wysocki
2009-03-21 14:44 ` ptrace performance (was: [Bug #12208] uml is very slow on 2.6.28 host) Michael Riepe
[not found] ` <49C4FD41.4030504-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org>
2009-03-21 15:22 ` Ingo Molnar
2009-03-21 17:02 ` ptrace performance Michael Riepe
2009-03-14 19:20 ` [Bug #12411] 2.6.28: BUG in r8169 Rafael J. Wysocki
2009-03-14 19:20 ` [Bug #12426] TMDC Joystick no longer works in kernel 2.6.28 Rafael J. Wysocki
2009-03-14 19:20 ` [Bug #12465] KVM guests stalling on 2.6.28 (bisected) Rafael J. Wysocki
2009-03-15 9:03 ` Kevin Shanahan
[not found] ` <1237107837.27699.27.camel-9TBizaOOD0ujuAshGpSIhRCuuivNXqWP@public.gmane.org>
2009-03-15 9:18 ` Avi Kivity
[not found] ` <49BCC7C8.2020503-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2009-03-15 9:48 ` Ingo Molnar
[not found] ` <20090315094807.GB21169-X9Un+BFzKDI@public.gmane.org>
2009-03-15 9:56 ` Avi Kivity [this message]
2009-03-15 10:03 ` Ingo Molnar
[not found] ` <20090315100329.GA23577-X9Un+BFzKDI@public.gmane.org>
2009-03-15 10:13 ` Avi Kivity
2009-03-16 9:49 ` Avi Kivity
[not found] ` <49BE20B2.9070804-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2009-03-16 12:46 ` Kevin Shanahan
[not found] ` <1237207595.4964.31.camel-9TBizaOOD0ujuAshGpSIhRCuuivNXqWP@public.gmane.org>
2009-03-16 20:07 ` Frederic Weisbecker
2009-03-16 22:55 ` Kevin Shanahan
[not found] ` <1237244137.4964.54.camel-9TBizaOOD0ujuAshGpSIhRCuuivNXqWP@public.gmane.org>
2009-03-18 0:20 ` Frederic Weisbecker
2009-03-18 1:16 ` Kevin Shanahan
[not found] ` <1237338986.4801.11.camel-9TBizaOOD0ujuAshGpSIhRCuuivNXqWP@public.gmane.org>
2009-03-18 2:24 ` Frederic Weisbecker
2009-03-18 21:24 ` Kevin Shanahan
[not found] ` <1237411441.5211.5.camel-9TBizaOOD0ujuAshGpSIhRCuuivNXqWP@public.gmane.org>
2009-03-21 5:00 ` Kevin Shanahan
[not found] ` <1237611639.4933.4.camel-9TBizaOOD0ujuAshGpSIhRCuuivNXqWP@public.gmane.org>
2009-03-21 14:08 ` Frederic Weisbecker
2009-03-24 11:44 ` Frederic Weisbecker
2009-03-24 11:47 ` Frederic Weisbecker
2009-03-25 23:40 ` Kevin Shanahan
2009-03-25 23:48 ` Frederic Weisbecker
2009-03-26 20:22 ` Kevin Shanahan
2009-03-14 19:20 ` [Bug #12421] GPF on 2.6.28 and 2.6.28-rc9-git3, e1000e and e1000 issues Rafael J. Wysocki
2009-03-14 19:20 ` [Bug #12612] hard lockup when interrupting cdda2wav Rafael J. Wysocki
2009-03-17 0:53 ` FUJITA Tomonori
[not found] ` <20090317095254P.fujita.tomonori-Zyj7fXuS5i5L9jVzuh4AOg@public.gmane.org>
2009-03-17 14:52 ` James Bottomley
2009-03-14 19:20 ` [Bug #12500] r8169: NETDEV WATCHDOG: eth0 (r8169): transmit timed out Rafael J. Wysocki
2009-03-14 19:20 ` [Bug #12619] Regression 2.6.28 and last - boot failed Rafael J. Wysocki
2009-03-14 19:20 ` [Bug #12690] DPMS (LCD powersave, poweroff) don't work Rafael J. Wysocki
2009-03-14 19:20 ` [Bug #12634] video distortion and lockup with i830 video chip and 2.6.28.3 Rafael J. Wysocki
2009-03-14 19:20 ` [Bug #12645] DMI low-memory-protect quirk causes resume hang on Samsung NC10 Rafael J. Wysocki
2009-03-14 19:20 ` [Bug #12835] Regression in backlight detection Rafael J. Wysocki
2009-03-14 19:20 ` [Bug #12798] No wake up after suspend Rafael J. Wysocki
2009-03-14 19:20 ` [Bug #12818] iwlagn broken after suspend to RAM (iwlagn: MAC is in deep sleep!) Rafael J. Wysocki
2009-03-14 19:20 ` [Bug #12868] iproute2 and regressing "ipv6: convert tunnels to net_device_ops" Rafael J. Wysocki
-- strict thread matches above, loose matches on Subject: below --
2009-03-21 17:01 2.6.29-rc8-git5: Reported regressions 2.6.27 -> 2.6.28 Rafael J. Wysocki
2009-03-21 17:07 ` [Bug #12465] KVM guests stalling on 2.6.28 (bisected) Rafael J. Wysocki
2009-03-21 19:50 ` Ingo Molnar
2009-03-03 19:34 2.6.29-rc6-git7: Reported regressions 2.6.27 -> 2.6.28 Rafael J. Wysocki
2009-03-03 19:41 ` [Bug #12465] KVM guests stalling on 2.6.28 (bisected) Rafael J. Wysocki
2009-03-04 3:08 ` Kevin Shanahan
[not found] ` <1236136099.7726.12.camel-9TBizaOOD0ujuAshGpSIhRCuuivNXqWP@public.gmane.org>
2009-03-08 10:04 ` Avi Kivity
2009-02-23 22:00 2.6.29-rc6: Reported regressions 2.6.27 -> 2.6.28 Rafael J. Wysocki
2009-02-23 22:03 ` [Bug #12465] KVM guests stalling on 2.6.28 (bisected) Rafael J. Wysocki
2009-02-24 0:59 ` Kevin Shanahan
[not found] ` <1235437183.4988.2.camel-9TBizaOOD0ujuAshGpSIhRCuuivNXqWP@public.gmane.org>
2009-02-24 1:37 ` Rafael J. Wysocki
2009-02-24 12:09 ` Avi Kivity
[not found] ` <49A3E38F.7080306-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2009-02-24 22:11 ` Kevin Shanahan
2009-02-14 20:48 2.6.29-rc5: Reported regressions 2.6.27 -> 2.6.28 Rafael J. Wysocki
2009-02-14 20:50 ` [Bug #12465] KVM guests stalling on 2.6.28 (bisected) Rafael J. Wysocki
2009-02-04 10:55 2.6.29-rc3-git6: Reported regressions 2.6.27 -> 2.6.28 Rafael J. Wysocki
2009-02-04 10:58 ` [Bug #12465] KVM guests stalling on 2.6.28 (bisected) Rafael J. Wysocki
2009-02-05 19:35 ` Kevin Shanahan
[not found] ` <1233862503.4823.1.camel-9TBizaOOD0ujuAshGpSIhRCuuivNXqWP@public.gmane.org>
2009-02-05 22:37 ` Rafael J. Wysocki
2009-01-19 21:41 2.6.29-rc2-git1: Reported regressions 2.6.27 -> 2.6.28 Rafael J. Wysocki
2009-01-19 21:45 ` [Bug #12465] KVM guests stalling on 2.6.28 (bisected) Rafael J. Wysocki
2009-01-20 0:12 ` Kevin Shanahan
[not found] ` <1232410363.4768.21.camel-9TBizaOOD0ujuAshGpSIhRCuuivNXqWP@public.gmane.org>
2009-01-20 11:35 ` Ingo Molnar
[not found] ` <20090120113546.GA26571-X9Un+BFzKDI@public.gmane.org>
2009-01-20 12:37 ` Avi Kivity
2009-01-20 12:42 ` Kevin Shanahan
[not found] ` <1232455343.4895.4.camel-9TBizaOOD0ujuAshGpSIhRCuuivNXqWP@public.gmane.org>
2009-01-20 12:56 ` Ingo Molnar
[not found] ` <20090120125652.GA1457-X9Un+BFzKDI@public.gmane.org>
2009-01-20 13:07 ` Ingo Molnar
[not found] ` <20090120130714.GA11048-X9Un+BFzKDI@public.gmane.org>
2009-01-20 14:59 ` Steven Rostedt
[not found] ` <alpine.DEB.1.10.0901200957220.2681-f9ZlEuEWxVcI6MkJdU+c8EEOCMrvLtNR@public.gmane.org>
2009-01-20 15:04 ` Ingo Molnar
[not found] ` <20090120150408.GD21931-X9Un+BFzKDI@public.gmane.org>
2009-01-20 17:53 ` Steven Rostedt
[not found] ` <alpine.DEB.1.10.0901201251180.2681-f9ZlEuEWxVcI6MkJdU+c8EEOCMrvLtNR@public.gmane.org>
2009-01-20 18:39 ` Ingo Molnar
2009-01-20 17:47 ` Avi Kivity
[not found] ` <49760E2D.2060109-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2009-01-21 14:25 ` Kevin Shanahan
[not found] ` <1232547932.4895.119.camel-9TBizaOOD0ujuAshGpSIhRCuuivNXqWP@public.gmane.org>
2009-01-21 14:34 ` Avi Kivity
[not found] ` <49773275.3020203-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2009-01-21 14:51 ` Kevin Shanahan
[not found] ` <1232549502.4895.124.camel-9TBizaOOD0ujuAshGpSIhRCuuivNXqWP@public.gmane.org>
2009-01-21 14:59 ` Avi Kivity
[not found] ` <49773848.4080409-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2009-01-21 15:13 ` Steven Rostedt
2009-01-22 1:48 ` Steven Rostedt
2009-01-21 15:10 ` Steven Rostedt
2009-01-21 15:18 ` Ingo Molnar
2009-01-22 19:57 ` Kevin Shanahan
[not found] ` <1232654237.4885.8.camel-9TBizaOOD0ujuAshGpSIhRCuuivNXqWP@public.gmane.org>
2009-01-22 20:31 ` Ingo Molnar
[not found] ` <20090121151820.GA23813-X9Un+BFzKDI@public.gmane.org>
2009-01-26 9:55 ` Kevin Shanahan
2009-01-26 11:35 ` Peter Zijlstra
2009-01-26 15:00 ` Ingo Molnar
2009-01-20 14:23 ` Kevin Shanahan
[not found] ` <1232461380.4895.33.camel-9TBizaOOD0ujuAshGpSIhRCuuivNXqWP@public.gmane.org>
2009-01-20 14:25 ` Ingo Molnar
[not found] ` <20090120142515.GC10224-X9Un+BFzKDI@public.gmane.org>
2009-01-20 15:51 ` Kevin Shanahan
[not found] ` <1232466686.4895.45.camel-9TBizaOOD0ujuAshGpSIhRCuuivNXqWP@public.gmane.org>
2009-01-20 16:06 ` Ingo Molnar
[not found] ` <20090120160613.GA32650-X9Un+BFzKDI@public.gmane.org>
2009-01-20 16:19 ` Peter Zijlstra
2009-01-20 14:46 ` Frédéric Weisbecker
2009-01-20 13:04 ` Avi Kivity
[not found] ` <4975CBF8.90101-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2009-01-20 17:54 ` Kevin Shanahan
[not found] ` <1232474081.4895.76.camel-9TBizaOOD0ujuAshGpSIhRCuuivNXqWP@public.gmane.org>
2009-01-20 18:42 ` Ingo Molnar
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