From: David Howells <dhowells@redhat.com>
To: Andy Whitcroft <apw@canonical.com>
Cc: dhowells@redhat.com, tytso@mit.edu,
Dave Airlie <airlied@gmail.com>, Dave Airlie <airlied@redhat.com>,
linux-kernel@vger.kernel.org
Subject: Re: Why is kslowd accumulating so much CPU time?
Date: Tue, 15 Jun 2010 19:07:48 +0100 [thread overview]
Message-ID: <18402.1276625268@redhat.com> (raw)
In-Reply-To: <AANLkTikxOwYQYSzNjEqRduTQvoUandnAsZzm5Auzgnaz@mail.gmail.com>
Andy Whitcroft <apw@canonical.com> wrote:
> I am seeing crunchy cursor behavior on boot on Ubuntu Lucid user space
> with the 2.6.35-rc3 kernel as well. It pretty much always does that
> on boot, and often later as well. Right now I have four of these
> chaps each consuming 9% of a CPU. Though they definatly come and go.
> Very odd:
>
> 938 root 15 -5 0 0 0 S 9 0.0 1:00.90 kslowd001
> 1048 root 15 -5 0 0 0 S 9 0.0 1:01.12 kslowd002
> 937 root 15 -5 0 0 0 S 8 0.0 1:00.92 kslowd000
> 1544 root 15 -5 0 0 0 D 8 0.0 1:00.55 kslowd003
Can you see what they're doing?
watch -n0 cat /sys/kernel/debug/slow_work/runqueue
David
next prev parent reply other threads:[~2010-06-15 18:07 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-09 18:36 Why is kslowd accumulating so much CPU time? Theodore Ts'o
2010-06-09 18:56 ` David Howells
2010-06-09 19:00 ` David Howells
2010-06-13 8:23 ` Dave Airlie
2010-06-13 19:49 ` tytso
2010-06-13 20:00 ` Dave Airlie
2010-06-14 18:42 ` Nick Bowler
2010-06-14 21:46 ` tytso
2010-06-15 17:25 ` Andy Whitcroft
2010-06-15 18:07 ` David Howells [this message]
2010-06-16 11:37 ` Andy Whitcroft
2010-06-16 13:33 ` Andy Whitcroft
2010-06-16 14:36 ` Nick Bowler
2010-06-16 14:55 ` Andy Whitcroft
2010-06-17 13:25 ` Nick Bowler
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