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

Eric Sandeen
2015-01-12T23:13:05Z

On 1/12/15 4:53 PM, Tejun Heo wrote:
> Hello, Eric.

Hi Tejun :)

> This doesn't look like the direct cause. It could just be reclaim
> path going berserk as the filesystem can't writeout pages. Can you
> dump all runnable tasks? Was this the only runnable kworker?
>
> Thanks.

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. :)

-Eric