From: Richard Weinberger <richard@nod.at>
To: Thomas Meyer <thomas@m3y3r.de>
Cc: user-mode-linux-devel
<user-mode-linux-devel@lists.sourceforge.net>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [uml-devel] [UM] Long loop in __getnsdayoftime() after resume from ram
Date: Mon, 20 Oct 2014 11:56:15 +0200 [thread overview]
Message-ID: <5444DC3F.20601@nod.at> (raw)
In-Reply-To: <E1Xg9cr-0007LK-S6@www17.your-server.de>
Am 20.10.2014 um 11:51 schrieb Thomas Meyer:
>> Hmm, does this always happen?
>
> Yes, my single core system seems to trigger this every time after resume from ram.
What is your host kernel?
>> At least on my notebook it did not happen. I've started an UML yesterday
>> suspended it and after more than 12h it worked fine today.
>>
>> BTW: Do you see the issue also then freezing UML using the freezer cgroup?
>
> I'm not sure what do you mean by this. Do I need to enable some special configs for this in the host or uml kernel?
Create on the host side a new freezer cgroup, put UML into it and freeze/thaw it.
i.e. mkdir /sys/fs/cgroup/freezer/uml ; echo <pid of a shell> > /sys/fs/cgroup/freezer/uml/tasks.
In the said shell run UML and then freeze it using echo FROZEN > /sys/fs/cgroup/freezer/uml/freezer.state.
Later thaw it: echo THAWED > /sys/fs/cgroup/freezer/uml/freezer.state
Thanks,
//richard
next prev parent reply other threads:[~2014-10-20 9:56 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-20 9:51 [uml-devel] [UM] Long loop in __getnsdayoftime() after resume from ram Thomas Meyer
2014-10-20 9:51 ` Thomas Meyer
2014-10-20 9:56 ` Richard Weinberger [this message]
2014-10-20 19:19 ` Thomas Meyer
2015-04-24 19:58 ` Thomas Meyer
2015-04-26 18:32 ` Richard Weinberger
2015-04-26 20:20 ` Richard Weinberger
2015-04-26 20:57 ` Thomas Meyer
2015-04-26 20:57 ` Thomas Meyer
2015-04-26 21:00 ` Richard Weinberger
2015-04-27 5:47 ` Anton Ivanov
2015-04-27 7:23 ` Richard Weinberger
2015-04-27 8:20 ` Anton Ivanov
2015-04-30 16:40 ` Thomas Meyer
-- strict thread matches above, loose matches on Subject: below --
2014-10-19 12:39 Thomas Meyer
2014-10-20 8:27 ` Richard Weinberger
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