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Re: [PATCH 2/2] xfs: mark the xfs-alloc workqueue as high priority

To: Eric Sandeen <sandeen@xxxxxxxxxxx>
Subject: Re: [PATCH 2/2] xfs: mark the xfs-alloc workqueue as high priority
From: Tejun Heo <tj@xxxxxxxxxx>
Date: Mon, 12 Jan 2015 18:37:55 -0500
Cc: Eric Sandeen <sandeen@xxxxxxxxxx>, xfs-oss <xfs@xxxxxxxxxxx>
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Sender: Tejun Heo <htejun@xxxxxxxxx>
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Hello, Eric.

On Mon, Jan 12, 2015 at 05:12:34PM -0600, Eric Sandeen wrote:
> The only tasks in RU state are the one I mentioned, and swapper/X.
> 
> crash> ps -m | grep RU
> [0 00:00:00.159] [RU]  PID: 17056  TASK: c000000111cc0000  CPU: 8   COMMAND: 
> "kworker/u112:1"
> [4 19:11:44.360] [RU]  PID: 0      TASK: c0000000010416f0  CPU: 0   COMMAND: 
> "swapper/0"
> [4 19:11:44.192] [RU]  PID: 0      TASK: c000000633280000  CPU: 1   COMMAND: 
> "swapper/1"
> [4 19:11:44.192] [RU]  PID: 0      TASK: c0000006332c0000  CPU: 2   COMMAND: 
> "swapper/2"
> ...
> 
> and I don't see anything interesting in those. :)

Heh, I don't get it.  Can you please print out worker_pool->nr_running
of the pool that the hung work item is queued on?

Thanks.

-- 
tejun

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