From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail144.messagelabs.com (mail144.messagelabs.com [216.82.254.51]) by kanga.kvack.org (Postfix) with SMTP id DB1CD6B007B for ; Fri, 19 Feb 2010 17:28:39 -0500 (EST) Received: by fxm22 with SMTP id 22so684353fxm.6 for ; Fri, 19 Feb 2010 14:28:37 -0800 (PST) From: "Kirill A. Shutemov" Subject: [PATCH -mmotm 4/4] memcg: Update memcg_test.txt to describe memory thresholds Date: Sat, 20 Feb 2010 00:28:19 +0200 Message-Id: In-Reply-To: <6afbe14e8bb2480d88377c14cb15d96edd2d18f6.1266618391.git.kirill@shutemov.name> References: <05f582d6cdc85fbb96bfadc344572924c0776730.1266618391.git.kirill@shutemov.name> <6afbe14e8bb2480d88377c14cb15d96edd2d18f6.1266618391.git.kirill@shutemov.name> In-Reply-To: <6afbe14e8bb2480d88377c14cb15d96edd2d18f6.1266618391.git.kirill@shutemov.name> References: <05f582d6cdc85fbb96bfadc344572924c0776730.1266618391.git.kirill@shutemov.name> <6afbe14e8bb2480d88377c14cb15d96edd2d18f6.1266618391.git.kirill@shutemov.name> Sender: owner-linux-mm@kvack.org To: containers@lists.linux-foundation.org, linux-mm@kvack.org Cc: Paul Menage , Li Zefan , Andrew Morton , KAMEZAWA Hiroyuki , Balbir Singh , Pavel Emelyanov , Dan Malek , Daisuke Nishimura , "Kirill A. Shutemov" List-ID: Signed-off-by: Kirill A. Shutemov --- Documentation/cgroups/memcg_test.txt | 21 +++++++++++++++++++++ 1 files changed, 21 insertions(+), 0 deletions(-) diff --git a/Documentation/cgroups/memcg_test.txt b/Documentation/cgroups/memcg_test.txt index e011488..4d32e0e 100644 --- a/Documentation/cgroups/memcg_test.txt +++ b/Documentation/cgroups/memcg_test.txt @@ -396,3 +396,24 @@ Under below explanation, we assume CONFIG_MEM_RES_CTRL_SWAP=y. memory.stat of both A and B. See 8.2 of Documentation/cgroups/memory.txt to see what value should be written to move_charge_at_immigrate. + + 9.10 Memory thresholds + Memory controler implements memory thresholds using cgroups notification + API. You can use Documentation/cgroups/cgroup_event_listener.c to test + it. + + (Shell-A) Create cgroup and run event listener + # mkdir /cgroup/A + # ./cgroup_event_listener /cgroup/A/memory.usage_in_bytes 5M + + (Shell-B) Add task to cgroup and try to allocate and free memory + # echo $$ >/cgroup/A/tasks + # a="$(dd if=/dev/zero bs=1M count=10)" + # a= + + You will see message from cgroup_event_listener every time you cross + the thresholds. + + Use /cgroup/A/memory.memsw.usage_in_bytes to test memsw thresholds. + + It's good idea to test root cgroup as well. -- 1.6.6.2 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org