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    SubjectRe: A lot of [ext4-dio-unwrit] threads around
    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.

    - Ted
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