Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755609Ab2FTM2h (ORCPT ); Wed, 20 Jun 2012 08:28:37 -0400 Received: from mailout-de.gmx.net ([213.165.64.22]:53947 "HELO mailout-de.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751950Ab2FTM2g (ORCPT ); Wed, 20 Jun 2012 08:28:36 -0400 X-Authenticated: #14349625 X-Provags-ID: V01U2FsdGVkX18+/m89j4Y+nrafJLtY3X4VoJLrJuFUWtneK5zBu6 2J/gk9ujKEPea/ Message-ID: <1340195298.15707.3.camel@marge.simpson.net> Subject: Re: Attaching a process to cgroups From: Mike Galbraith To: Alexey Vlasov Cc: linux-kernel@vger.kernel.org Date: Wed, 20 Jun 2012 14:28:18 +0200 In-Reply-To: <20120619185856.GC31797@beaver> References: <20120619185856.GC31797@beaver> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.3 Content-Transfer-Encoding: 7bit Mime-Version: 1.0 X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1133 Lines: 27 On Tue, 2012-06-19 at 22:58 +0400, Alexey Vlasov wrote: > Hi. > > Is it possible to somehow fasten a process of pid attaching to cgroup? > The problem is the pid attaches to a task-file with some strange delay: > > 22:28:00.788224 open("/sys/fs/cgroup/memory/virtwww/w_test-l24-apache1_4bdf3d13/apache/tasks", O_WRONLY|O_CREAT|O_APPEND, 0666) = 3 <0.000035> > 22:28:00.788289 fstat(3, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0 <0.000004> > 22:28:00.788326 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5e78074000 <0.000005> > 22:28:00.788355 fstat(3, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0 <0.000004> > 22:28:00.788389 lseek(3, 0, SEEK_SET) = 0 <0.000004> > 22:28:00.788426 write(3, "16317\n", 6) = 6 <0.128094> > 22:28:00.916578 close(3) = 0 <0.000006> kernel/cgroup.c::cgroup_attach_task() { ... synchronize_rcu(); ... } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/