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* A lot of [ext4-dio-unwrit] threads around
@ 2011-02-07 17:09 Ozan Çağlayan
  2011-02-07 18:05 ` Ted Ts'o
  0 siblings, 1 reply; 2+ messages in thread
From: Ozan Çağlayan @ 2011-02-07 17:09 UTC (permalink / raw)
  To: linux-kernel

Hi,


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?

Thanks
-- 
Pardus Linux
http://www.pardus.org.tr/eng

^ permalink raw reply	[flat|nested] 2+ messages in thread
* Re: A lot of [ext4-dio-unwrit] threads around
  2011-02-07 17:09 A lot of [ext4-dio-unwrit] threads around Ozan Çağlayan
@ 2011-02-07 18:05 ` Ted Ts'o
  0 siblings, 0 replies; 2+ messages in thread
From: Ted Ts'o @ 2011-02-07 18:05 UTC (permalink / raw)
  To: Ozan Çağlayan; +Cc: linux-kernel

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

^ permalink raw reply	[flat|nested] 2+ messages in thread
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2011-02-07 17:09 A lot of [ext4-dio-unwrit] threads around Ozan Çağlayan
2011-02-07 18:05 ` Ted Ts'o

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