Re: thousands of kworker processes with 4.7.x and 4.8-rc*

[Tomasz Chmielewski]

On 2016-09-25 18:29, Tomasz Chmielewski wrote:

> > I'll try to bisect.
>
> OK, not a kernel regression, but some config change caused it.
> However, I'm not able to locate which change exactly.
>
> I'm attaching two configs which I've tried with 4.7.3 - one results in
> thousands of kworkers, and the other doesn't. Also included a diff
> between them.
>
> Any obvious changes I should try?

The problem is the allocator.

-CONFIG_SLUB=y
+CONFIG_SLAB=y


With SLUB, I'm getting a handful of kworker processes, as expected.

With SLAB, I'm getting thousands of kworker processes.


Not sure if that's expected behaviour or not.


Tomasz Chmielewski
https://lxadm.com