[arch-general] Way too much kworkers

Leonid Isaev lisaev at umail.iu.edu
Tue Oct 1 17:00:55 EDT 2013

On Tue, 1 Oct 2013 22:16:53 +0300
Dimitris Zervas <dzervas at dzervas.gr> wrote:

> Hello,
> I've googled a bit and saw that other people have this problem too, but
> without solution. They had maybe 8 or 10 kworker processes. After 2
> suspends, I have 172.
> ps -ef | grep kworker | wc -l
> 173
> (one of the line is grep's process).
> Is there any solution?

These [kworker] processes were probably created during the suspend/resume
phase and have not been killed yet. If they don't consume CPU time, you have
nothing to be concerned about. From Documentation/workqueue.txt:

"Keeping idle workers around doesn't cost other than the memory space
for kthreads, so cmwq holds onto idle ones for a while before killing

However, I don't know how long "a while" is...

Leonid Isaev
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