From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zhang Haoyu Subject: Re: pidns: Make pid accounting and pid_max per namespace Date: Sat, 10 Oct 2015 12:46:27 +0800 Message-ID: <56189823.1030306@mogujie.com> References: <56179700.3010703@mogujie.com> <56188774.1040000@huawei.com> <561896C0.20600@mogujie.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <561896C0.20600-e3F2ONz+ghBBDgjK7y7TUQ@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Zefan Li Cc: containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, LKML List-Id: containers.vger.kernel.org On 10/10/15 12:40, Zhang Haoyu wrote: > On 10/10/15 11:35, Zefan Li wrote: >> On 2015/10/9 18:29, Zhang Haoyu wrote: >>> I started multiple docker containers in centos6.6(linux-2.6.32-504.16.2), >>> and there's one bad program was running in one container. >>> This program produced many child threads continuously without free, so more and >>> more pid numbers were consumed by this program, until hitting the pix_max limit (32768 >>> default in my system ). >>> >>> What's worse is that containers and host share the pid numbers resource, so new program >>> cannot be produced any more in host and other containers. >>> >>> And, I clone the upstream kernel source from >>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git >>> This problem is still there, I'm not sure. >>> >>> IMO, we should isolate the pid accounting and pid_max between pid namespaces, >>> and make them per pidns. >>> Below post had request for making pid_max per pidns. >>> http://thread.gmane.org/gmane.linux.kernel/1108167/focus=1111210 >>> >> Mainline kernel already supports per-cgroup pid limit, which should solve >> your problem. >> > What about pid accounting? > If one pidns consume too many pids, dose it influence the other pid namespaces? I found it, thanks very much. > > Thanks, > Zhang Haoyu