linux-kernel - Re: [PATCH 0/5] kmod: Cleanups, simplifications, and make isolation friendly v3

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Message-ID: <20150728180707.GB1547@lerouge>
Date:	Tue, 28 Jul 2015 20:07:08 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Christoph Lameter <cl@...ux.com>,
	Rik van Riel <riel@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 0/5] kmod: Cleanups, simplifications, and make isolation
 friendly v3

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.
> > 
> > That's what I think too. How many workers system_unbound_wq can handle? If kmod
> 
> 256 by default.

Looks quite fine!

> 
> > raises very high numbers of threads in parallel like > 500, I think that would be
> > a problem on its own anyway.
> 
> I'm having hard time to see how limit of 256 would be a problem.  If
> it becomes one, let's deal with it then.

Agreed!

Thanks.
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