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: 4.4-final: 28 bioset threads on small notebook
Date: Sat, 20 Feb 2016 18:40:35 +0100 [thread overview]
Message-ID: <20160220174035.GA16459@amd> (raw)
In-Reply-To: <20151211140841.GA22873@redhat.com>
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.
Block devices:
259 blkext
7 loop
8 sd
9 md
11 sr
43 nbd
65 sd
66 sd
67 sd
68 sd
69 sd
70 sd
71 sd
128 sd
129 sd
130 sd
131 sd
132 sd
133 sd
134 sd
135 sd
179 mmc
251 device-mapper
252 bcache
253 pktcdvd
254 mdp
--
(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 17:40 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 ` Pavel Machek [this message]
2016-02-20 18:42 ` 4.4-final: " Pavel Machek
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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