From: Philippe Gerum <rpm@xenomai.org>
To: edward.robbins@domain.hid
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] Very high latencies under stress testing
Date: Fri, 15 Oct 2010 16:33:44 +0200 [thread overview]
Message-ID: <1287153224.1628.80.camel@domain.hid> (raw)
In-Reply-To: <1287152003.579923730@domain.hid>
On Fri, 2010-10-15 at 15:13 +0100,
edward.robbins@domain.hid wrote:
> Will do. Should I leave in Philippes patch? I will assume no for
> now...
>
That patch is correct and unrelated to the next problem. An other issue
is that the generic mtrr code is not ipipe aware, so it is not really
interrupt free.
> On Friday, 15 October, 2010 2:51pm, "Gilles Chanteperdrix"
> <gilles.chanteperdrix@xenomai.org> said:
>
> > edward.robbins@domain.hid wrote:
> > > I am also finding that tasks are frequently hanging, causing
> > > ipipetraces with "INFO: task xxx:xxx blocked for more than 120
> > > seconds". Ihave just had this with apt-get update, and was
> previously
> > > getting itwith grub-install. Could this be related?
> >
> > Yes. There is obviously an issue in your patched kernel, we need to
> find
> > this first before we draw any conclusion from any other behaviour.
> >
> > From the trace you sent, it looks like it happens in the MTRR code,
> but
> > it could also be an SMI, or some other bug. For debugging purposes,
> > could you try disabling MTRRs in the kernel configuration?
> >
> > --
> > Gilles.
> >
> _______________________________________________
> Xenomai-help mailing list
> Xenomai-help@domain.hid
> https://mail.gna.org/listinfo/xenomai-help
--
Philippe.
next prev parent reply other threads:[~2010-10-15 14:33 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-13 14:17 [Xenomai-help] Very high latencies under stress testing edward.robbins
2010-08-13 14:35 ` Gilles Chanteperdrix
2010-08-16 12:13 ` edward.robbins
2010-08-16 12:32 ` Gilles Chanteperdrix
2010-09-03 16:30 ` edward.robbins
2010-09-04 8:51 ` Philippe Gerum
2010-10-15 9:21 ` edward.robbins
2010-10-15 11:54 ` edward.robbins
2010-10-15 13:51 ` Gilles Chanteperdrix
2010-10-15 14:13 ` edward.robbins
2010-10-15 14:25 ` Gilles Chanteperdrix
2010-10-15 14:33 ` Philippe Gerum [this message]
2010-10-19 13:52 ` edward.robbins
2010-10-19 20:01 ` Gilles Chanteperdrix
2010-10-23 11:08 ` edward.robbins
2010-10-23 11:13 ` Gilles Chanteperdrix
2010-10-23 11:22 ` edward.robbins
2010-10-23 11:36 ` Gilles Chanteperdrix
2010-10-23 13:45 ` edward.robbins
2010-10-23 13:51 ` Gilles Chanteperdrix
2010-10-23 13:56 ` edward.robbins
2010-10-23 13:58 ` Gilles Chanteperdrix
2010-10-23 14:32 ` edward.robbins
2010-10-23 14:37 ` Gilles Chanteperdrix
2010-10-23 14:48 ` edward.robbins
2010-10-23 15:16 ` edward.robbins
2010-10-23 14:10 ` Gilles Chanteperdrix
2010-08-13 14:40 ` Philippe Gerum
2010-08-13 16:15 ` Philippe Gerum
-- strict thread matches above, loose matches on Subject: below --
2010-10-23 14:54 edward.robbins
2010-10-23 15:37 ` Gilles Chanteperdrix
2010-10-23 16:21 ` edward.robbins
2010-10-23 16:26 ` edward.robbins
2010-10-23 18:46 ` edward.robbins
2010-10-23 21:52 ` Gilles Chanteperdrix
2010-10-24 15:55 ` edward.robbins
2010-10-23 16:13 ` Gilles Chanteperdrix
2010-10-23 16:22 ` Gilles Chanteperdrix
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