From: Pavel Machek <pavel@ucw.cz>
To: Mike Snitzer <snitzer@redhat.com>
Cc: kernel list <linux-kernel@vger.kernel.org>, axboe@fb.com, hch@lst.de
Subject: Re: 4.4-final: 28 bioset threads on small notebook
Date: Sat, 20 Feb 2016 19:42:58 +0100 [thread overview]
Message-ID: <20160220184258.GA3753@amd> (raw)
In-Reply-To: <20160220174035.GA16459@amd>
On Sat 2016-02-20 18:40:35, Pavel Machek wrote:
>
> On Fri 2015-12-11 09:08:41, Mike Snitzer wrote:
> > On Fri, Dec 11 2015 at 5:49am -0500,
> > Pavel Machek <pavel@ucw.cz> wrote:
> >
> > > Hi!
> > >
> > > I know it is normal to spawn 8 threads for every single function,
> > ...
> > > but 28 threads?
> > >
> > > root 974 0.0 0.0 0 0 ? S< Dec08 0:00 [bioset]
> > ...
> >
> > How many physical block devices do you have?
> >
> > DM is doing its part to not contribute to this:
> > dbba42d8a ("dm: eliminate unused "bioset" process for each bio-based DM device")
> >
> > (but yeah, all these extra 'bioset' threads aren't ideal)
>
> Still there in 4.4-final.
...and still there in 4.5-rc4 :-(.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2016-02-20 18:43 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-11 10:49 4.4-rc: 28 bioset threads on small notebook Pavel Machek
2015-12-11 14:08 ` Mike Snitzer
2015-12-11 17:14 ` Pavel Machek
2016-02-20 17:40 ` 4.4-final: " Pavel Machek
2016-02-20 18:42 ` Pavel Machek [this message]
2016-02-20 19:51 ` Mike Snitzer
2016-02-20 20:04 ` Pavel Machek
2016-02-20 20:38 ` Mike Snitzer
2016-02-20 20:55 ` Pavel Machek
2016-02-21 4:15 ` Kent Overstreet
2016-02-21 6:43 ` Ming Lin-SSI
2016-02-21 9:40 ` Ming Lei
2016-02-22 22:58 ` Kent Overstreet
2016-02-23 2:55 ` Ming Lei
2016-02-23 14:54 ` Mike Snitzer
2016-02-24 2:48 ` Ming Lei
2016-02-24 3:23 ` Kent Overstreet
2016-02-23 20:45 ` Pavel Machek
2017-02-06 12:53 ` v4.9, 4.4-final: 28 bioset threads on small notebook, 36 threads on cellphone Pavel Machek
2017-02-07 1:47 ` Kent Overstreet
2017-02-07 2:49 ` Kent Overstreet
2017-02-07 17:13 ` Mike Snitzer
2017-02-07 20:39 ` Pavel Machek
2017-02-08 3:12 ` Mike Galbraith
2017-02-08 4:58 ` Kent Overstreet
2017-02-08 6:22 ` [PATCH] block: Make rescuer threads per request_queue, not per bioset kbuild test robot
2017-02-08 6:23 ` kbuild test robot
2017-02-08 6:57 ` v4.9, 4.4-final: 28 bioset threads on small notebook, 36 threads on cellphone Mike Galbraith
2017-02-08 16:34 ` Mike Snitzer
2017-02-09 21:25 ` Kent Overstreet
2017-02-14 16:34 ` [dm-devel] " Mikulas Patocka
2017-02-14 17:33 ` Mike Snitzer
2017-02-08 2:47 ` Ming Lei
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