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Subject: Re: [Patch] Per kthread freezer flags
From: Felipe Alfaro Solana <felipe_alfaro@linuxmail.org>
To: ncunningham@linuxmail.org
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Date: Thu, 29 Jul 2004 12:02:21 +0200
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On Thu, 2004-07-29 at 10:46 +1000, Nigel Cunningham wrote:
> Hi.
> 
> On Thu, 2004-07-29 at 09:21, Felipe Alfaro Solana wrote:
> > kirdad? No... That sounds like Infrared which my laptop does not have.
> 
> Did to me too. I was clutching at straws. :>
> 
> > Here is a digest of ps -axf:
> > 
> >   PID TTY      STAT   TIME COMMAND
> >     1 ?        S      0:00 init [5]
> >     2 ?        S<     0:03 [irqd/0]
> >     3 ?        S<     0:00 [events/0]
> >     4 ?        S<     0:00  \_ [khelper]
> >     5 ?        S<     0:00  \_ [kacpid]
> >    22 ?        S<     0:00  \_ [kblockd/0]
> >    32 ?        S      0:00  \_ [pdflush]
> >    33 ?        S      0:00  \_ [pdflush]
> >    35 ?        S<     0:00  \_ [aio/0]
> >    36 ?        S<     0:00  \_ [xfslogd/0]
> >    37 ?        S<     0:00  \_ [xfsdatad/0]
> >    34 ?        S      0:00 [kswapd0]
> >    38 ?        S      0:00 [xfsbufd]
> >   120 ?        S      0:00 [kseriod]
> >   125 ?        S      0:00 [xfssyncd]
> >   273 ?        Ss     0:00 minilogd
> >   286 ?        S      0:00 [xfssyncd]
> >   287 ?        S      0:00 [xfssyncd]
> >   567 ?        S      0:00 [khubd]
> >   871 ?        S      0:00 [pccardd]
> >   877 ?        S      0:00 [pccardd]
> 
> It doesn't look like I've touched any of those threads. I have doubts
> about irqd/0 (is that kirqd reworked?), so you might try making setting
> PF_NOFREEZE and seeing if it makes a difference. I haven't done the
> switch to rc2-mm1 yet, so haven't gotten to those issues.

kirqd is voluntary-preempt patch by Ingo Molnar. I have also applied
several other patches, like Con's Staircase scheduler policy and some
latency fixes.