On 2016-09-26 04:07, Nikolay Borisov wrote:
Not sure if that's expected behaviour or not.
Why don't you sample the stacks of some of those kworker processes to
see if they are all executing a parituclar piece of work. That might
help you narrow down where they originate from. Cat multiple
/pr
On 25.09.2016 15:40, Tomasz Chmielewski wrote:
> 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
On Sun, 2016-09-25 at 19:21 +0200, Mike Galbraith wrote:
> On Sun, 2016-09-25 at 21:40 +0900, Tomasz Chmielewski wrote:
>
> > The problem is the allocator.
> >
> > -CONFIG_SLUB=y
> > +CONFIG_SLAB=y
> >
> >
> > With SLUB, I'm getting a handful of kworker processes, as expected.
> >
> > With SLA
On Sun, 2016-09-25 at 21:40 +0900, Tomasz Chmielewski wrote:
> 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 expec
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 d
On 2016-09-23 23:10, Mike Galbraith wrote:
I did some experiments to see when the problem first appeared.
Thousands
of kworker processes start to show up in 4.7.0-rc5.
kernel version | kworker count after boot
---
4.6.3 > > 37
4.6.4 > >
On Fri, 2016-09-23 at 22:23 +0900, Tomasz Chmielewski wrote:
> On 2016-09-19 16:08, Tomasz Chmielewski wrote:
> > On several servers running 4.7.x and 4.8-rc6/7 kernels I'm seeing
> > thousands of kworker processes.
> > # ps auxf|grep -c kworker
> > 2104
> > Load average goes into hundreds on a pre
On 2016-09-19 16:08, Tomasz Chmielewski wrote:
On several servers running 4.7.x and 4.8-rc6/7 kernels I'm seeing
thousands of kworker processes.
# ps auxf|grep -c kworker
2104
Load average goes into hundreds on a pretty much idle server (biggest
CPU and RAM consumers are probably SSHD with one us
On several servers running 4.7.x and 4.8-rc6/7 kernels I'm seeing
thousands of kworker processes.
# ps auxf|grep -c kworker
2104
Load average goes into hundreds on a pretty much idle server (biggest
CPU and RAM consumers are probably SSHD with one user logged in and
rsyslog writing ~1 line p
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