From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759055AbcBTRkk (ORCPT ); Sat, 20 Feb 2016 12:40:40 -0500 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:34055 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759040AbcBTRki (ORCPT ); Sat, 20 Feb 2016 12:40:38 -0500 Date: Sat, 20 Feb 2016 18:40:35 +0100 From: Pavel Machek To: Mike Snitzer Cc: kernel list , axboe@fb.com, hch@lst.de Subject: 4.4-final: 28 bioset threads on small notebook Message-ID: <20160220174035.GA16459@amd> References: <20151211104937.GA23165@amd> <20151211140841.GA22873@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20151211140841.GA22873@redhat.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri 2015-12-11 09:08:41, Mike Snitzer wrote: > On Fri, Dec 11 2015 at 5:49am -0500, > Pavel Machek 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