From mboxrd@z Thu Jan 1 00:00:00 1970 From: Leo Famulari Subject: Re: guix-daemon hitting systemd TasksMax Date: Mon, 18 Apr 2016 16:33:45 -0400 Message-ID: <20160418203345.GB26832@jasmine> References: <1460677052.2416958.579259849.502AC954@webmail.messagingengine.com> <20160416012901.GB12389@jasmine> <1460812335.1088225.580600441.5A60AF4E@webmail.messagingengine.com> <20160416161438.GB9412@jasmine> <871t65f9zb.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Return-path: Received: from eggs.gnu.org ([2001:4830:134:3::10]:34641) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1asFrG-0008RM-5i for guix-devel@gnu.org; Mon, 18 Apr 2016 16:33:22 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1asFrC-0007Jj-Vm for guix-devel@gnu.org; Mon, 18 Apr 2016 16:33:22 -0400 Received: from out2-smtp.messagingengine.com ([66.111.4.26]:50982) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1asFrC-0007JZ-SQ for guix-devel@gnu.org; Mon, 18 Apr 2016 16:33:18 -0400 Content-Disposition: inline In-Reply-To: <871t65f9zb.fsf@gnu.org> List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org Sender: "Guix-devel" To: Ludovic =?iso-8859-1?Q?Court=E8s?= Cc: guix-devel@gnu.org On Sun, Apr 17, 2016 at 12:46:16AM +0200, Ludovic Courtès wrote: > Leo Famulari skribis: > > > On Sat, Apr 16, 2016 at 03:12:15PM +0200, Joram Schrijver wrote: > >> I am running Arch Linux, also with systemd 229. It doesn't look like > >> Debian applies any patches to systemd, so our installations should > >> pretty much be the same. > >> > >> Perhaps the limit is only reached during the build process of some > >> specific packages? > > > > `guix pull` usually doesn't build any packages, but sometimes it does > > need to. My (limited) understanding is that it sometimes needs to build > > (or download) updated dependencies of Guix itself. > > > > Do you think the number of "Tasks" would increase with more cores? I > > only have 4 cores on my machines. Maybe if you had more, the builders > > spawned by your guix-daemon would run more tasks as a consequence of > > using all the cores. > > Right, ‘guix pull’ entails a build of Guix using as many cores as > possible, with one process per core (and I think each Guile has two > threads, one of which is the signal delivery thread.) > > So, if the limit on the total number of threads + processes is 512 and > you have 256 cores or more (lucky you!), you may hit the limit. Joram, are you this lucky? ;)