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Date: Tue, 15 Jun 2010 19:07:48 +0100 From: David Howells <dhowells@...hat.com> To: Andy Whitcroft <apw@...onical.com> Cc: dhowells@...hat.com, tytso@....edu, Dave Airlie <airlied@...il.com>, Dave Airlie <airlied@...hat.com>, linux-kernel@...r.kernel.org Subject: Re: Why is kslowd accumulating so much CPU time? Andy Whitcroft <apw@...onical.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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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