From: Thomas Meyer <thomas@m3y3r.de>
To: Richard Weinberger <richard@nod.at>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
user-mode-linux-devel
<user-mode-linux-devel@lists.sourceforge.net>
Subject: Re: [uml-devel] [UM] Long loop in __getnsdayoftime() after resume from ram
Date: Mon, 20 Oct 2014 21:19:28 +0200 [thread overview]
Message-ID: <1413832768.2991.39.camel@localhost.localdomain> (raw)
In-Reply-To: <5444DC3F.20601@nod.at>
Am Montag, den 20.10.2014, 11:56 +0200 schrieb Richard Weinberger:
> 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?
The standard Fedora kernel: 3.16.4-200.fc20.x86_64
>
> >> 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
>
I'll try this.
Thanks for this tip.
with kind regards
thomas
next prev parent reply other threads:[~2014-10-20 19:19 UTC|newest]
Thread overview: 14+ 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 9:56 ` Richard Weinberger
2014-10-20 19:19 ` Thomas Meyer [this message]
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 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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