Messages in this thread | | | Date | Mon, 7 Feb 2011 13:05:24 -0500 | From | Ted Ts'o <> | Subject | Re: A lot of [ext4-dio-unwrit] threads around |
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On Mon, Feb 07, 2011 at 07:09:26PM +0200, Ozan Çağlayan wrote: > > This is 2.6.35.11 on a 24-core HP Proliant server with 8 mounted > ext4 filesystems. There are 7 LXC containers which does heavy > compiling workload during the day. > > Uptime is 3 days and currently there are 216 ext4-dio-unwrit threads > in ps aux output? Is it normal or a symptom of a problem?
It's normal; the workqueues are created statically at mount time, one per cpu per file system. There are some plans in train for a more efficient way of dealing with workqueues in general on systems with large numbers of CPU's, but for 2.6.35, yes, that's normal.
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