From: Marek Marczykowski <marmarek@invisiblethingslab.com>
To: Jan Beulich <JBeulich@suse.com>
Cc: Ben Guthro <ben@guthro.net>, xen-devel@lists.xen.org
Subject: Re: Only CPU0 active after ACPI S3, xen 4.1.3
Date: Sat, 12 Jan 2013 08:05:23 +0100 [thread overview]
Message-ID: <50F10B33.9040705@invisiblethingslab.com> (raw)
In-Reply-To: <50E554C302000078000B29BA@nat28.tlf.novell.com>
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On 03.01.2013 09:52, Jan Beulich wrote:
>>>> On 21.12.12 at 14:33, Marek Marczykowski <marmarek@invisiblethingslab.com>
> wrote:
>> On 21.12.2012 09:55, Jan Beulich wrote:
>>>>>> On 21.12.12 at 05:52, Marek Marczykowski <marmarek@invisiblethingslab.com>
>> wrote:
>>>> On 21.12.2012 00:17, Marek Marczykowski wrote:
>>>>> With this patch applied (on 4.1.4 and 4.3-unstable), I've got original
>>>> symptom
>>>>> - only CPU0 active after ACPI S3. Didn't get reboot after few tries.
>>>>> "xl debug-key r" output attached.
>>>>> Anyway it looks like bug was introduced somehow between 4.1.2 and 4.1.3 - on
>>>>> 4.1.2 none of above problems happened.
>>>>
>>>> I've done bisect on xen 4.1 and found problematic commit:
>>>> http://xenbits.xen.org/hg/xen-4.1-testing.hg/rev/1f95b55ef427
>>>
>>> In that case, using "sched_ratelimit_us=0" should make the
>>> problem go away again - did you try that?
>>
>> This option does not help when trying 4.1.4, but does when trying xen
>> compiled from above c/s.
>
> Are you saying that on 4.1.4 this doesn't take effect? Are there
> any log messages indicating so? The above being the top most
> change to sched_credit.c, this difference in behavior pretty odd.
I can no longer reproduce this bug on 4.1.3-rc1-pre (above sched_credit c/s)
with or without sched_ratelimit_us=0. So it must be some mistake during
previous testing.
Also the problem from email subject is rather rare and not observed after ~20
suspend-resume cycles...
Just to summary:
4.1.3-rc1-pre (above sched_credit c/s) - works ok
4.1.4 regardless of sched_ratelimit_us=0 reboots at resume
4.1.5-pre reboots at resume regardless of sched_ratelimit_us option
4.1.5-pre with "Introduce system_state variable" reverted works fine -
regardless of sched_ratelimit_us option
"4.1.5-pre" was c/s 23436:2ae6267371d8, but still the same effects on
23441:2a91623a5807.
> On 4.2, this wouldn't be surprising, given that without -unstable
> c/s 26266:8d209624ea83 the =0 special case didn't get handled
> (broken by 24880:dd9e8f1ebed1).
>
> Jan
>
--
Best Regards / Pozdrawiam,
Marek Marczykowski
Invisible Things Lab
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next prev parent reply other threads:[~2013-01-12 7:05 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-29 18:55 Only CPU0 active after ACPI S3, xen 4.1.3 Marek Marczykowski
2012-11-30 9:33 ` Jan Beulich
2012-11-30 16:07 ` Marek Marczykowski
2012-11-30 16:12 ` Jan Beulich
2012-11-30 16:18 ` Marek Marczykowski
2012-12-03 7:39 ` Jan Beulich
2012-12-04 13:27 ` Marek Marczykowski
2012-12-20 15:59 ` Marek Marczykowski
2012-12-20 16:37 ` Jan Beulich
2012-12-20 19:41 ` Ben Guthro
2012-12-20 23:17 ` Marek Marczykowski
2012-12-21 4:52 ` Marek Marczykowski
2012-12-21 8:55 ` Jan Beulich
2012-12-21 13:33 ` Marek Marczykowski
2012-12-21 13:34 ` Marek Marczykowski
2012-12-21 13:42 ` Jan Beulich
2012-12-21 13:59 ` Marek Marczykowski
2012-12-21 14:03 ` Ben Guthro
2012-12-21 14:05 ` Jan Beulich
2012-12-21 15:30 ` Marek Marczykowski
2012-12-21 15:54 ` Ben Guthro
2012-12-21 16:03 ` Jan Beulich
2012-12-21 16:18 ` Ben Guthro
2012-12-23 2:49 ` Marek Marczykowski
2012-12-23 13:45 ` Ben Guthro
2012-12-31 12:51 ` Ben Guthro
2013-01-03 8:52 ` Jan Beulich
2013-01-16 11:22 ` George Dunlap
2013-01-16 11:58 ` George Dunlap
2013-01-16 13:08 ` Jan Beulich
2013-01-16 13:58 ` George Dunlap
2013-01-16 14:31 ` Jan Beulich
2013-01-03 8:52 ` Jan Beulich
2013-01-12 7:05 ` Marek Marczykowski [this message]
2013-01-14 3:28 ` Marek Marczykowski
2012-11-30 21:33 ` Konrad Rzeszutek Wilk
2012-11-30 22:12 ` Ben Guthro
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