On Wed, Aug 05, 2015 at 07:10:57PM +0200, Oleg Nesterov wrote:
> On 07/27, Frederic Weisbecker wrote:
> >
> > Hence those two debatable changes:
> >
> > _ We would like to use generic workqueues. System unbound workqueues are
> > a very good candidate but they are not wide affine, only node affin
On 07/27, Frederic Weisbecker wrote:
>
> Hence those two debatable changes:
>
> _ We would like to use generic workqueues. System unbound workqueues are
> a very good candidate but they are not wide affine, only node affine.
> Now probably a node is enough to perform many parallel kmod jobs.
>
On Tue, Jul 28, 2015 at 02:01:14PM -0400, Tejun Heo wrote:
> Hello, Frederic.
>
> On Mon, Jul 27, 2015 at 11:05:41PM +0200, Frederic Weisbecker wrote:
> > > IMHO, system_wq should be fine and if it isn't turning off numa
> > > affinity or raising max worker limit later is pretty trivial.
> >
> >
Hello, Frederic.
On Mon, Jul 27, 2015 at 11:05:41PM +0200, Frederic Weisbecker wrote:
> > IMHO, system_wq should be fine and if it isn't turning off numa
> > affinity or raising max worker limit later is pretty trivial.
>
> That's what I think too. How many workers system_unbound_wq can handle? I
On Mon, Jul 27, 2015 at 02:48:40PM -0400, Tejun Heo wrote:
> On Mon, Jul 27, 2015 at 06:27:15PM +0200, Frederic Weisbecker wrote:
> > Hence those two debatable changes:
> >
> > _ We would like to use generic workqueues. System unbound workqueues are
> > a very good candidate but they are not wid
On Mon, Jul 27, 2015 at 06:27:15PM +0200, Frederic Weisbecker wrote:
> Hence those two debatable changes:
>
> _ We would like to use generic workqueues. System unbound workqueues are
> a very good candidate but they are not wide affine, only node affine.
> Now probably a node is enough to perf
This patchset does a bunch of cleanups and converts khelper to use
system unbound workqueues. The 3 first patches should be uncontroversial.
The last 2 patches are debatable.
Kmod creates kernel threads that perform userspace jobs and we want
those to have a large affinity in order not to contend
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