diff options
author | Paul Mundt <lethal@linux-sh.org> | 2009-02-12 17:27:56 +0900 |
---|---|---|
committer | Paul Mundt <lethal@linux-sh.org> | 2009-02-12 17:27:56 +0900 |
commit | 41480ae7a383dcffa497decdd97b3cb2caaa18ec (patch) | |
tree | f1e3afce2cbd0bbc544cd86a73e5b3093eb081c4 /Documentation/cgroups/memcg_test.txt | |
parent | 508eb2ce222053e51e2243b7add8eeac85b1d250 (diff) | |
parent | 34aeb43e2d3800f4d8f96feb9f1b49cd506679d5 (diff) |
Merge branch 'sh/stable-updates'
Diffstat (limited to 'Documentation/cgroups/memcg_test.txt')
-rw-r--r-- | Documentation/cgroups/memcg_test.txt | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/Documentation/cgroups/memcg_test.txt b/Documentation/cgroups/memcg_test.txt index 19533f93b7a..523a9c16c40 100644 --- a/Documentation/cgroups/memcg_test.txt +++ b/Documentation/cgroups/memcg_test.txt @@ -1,6 +1,6 @@ Memory Resource Controller(Memcg) Implementation Memo. -Last Updated: 2008/12/15 -Base Kernel Version: based on 2.6.28-rc8-mm. +Last Updated: 2009/1/19 +Base Kernel Version: based on 2.6.29-rc2. Because VM is getting complex (one of reasons is memcg...), memcg's behavior is complex. This is a document for memcg's internal behavior. @@ -340,3 +340,23 @@ Under below explanation, we assume CONFIG_MEM_RES_CTRL_SWAP=y. # mount -t cgroup none /cgroup -t cpuset,memory,cpu,devices and do task move, mkdir, rmdir etc...under this. + + 9.7 swapoff. + Besides management of swap is one of complicated parts of memcg, + call path of swap-in at swapoff is not same as usual swap-in path.. + It's worth to be tested explicitly. + + For example, test like following is good. + (Shell-A) + # mount -t cgroup none /cgroup -t memory + # mkdir /cgroup/test + # echo 40M > /cgroup/test/memory.limit_in_bytes + # echo 0 > /cgroup/test/tasks + Run malloc(100M) program under this. You'll see 60M of swaps. + (Shell-B) + # move all tasks in /cgroup/test to /cgroup + # /sbin/swapoff -a + # rmdir /test/cgroup + # kill malloc task. + + Of course, tmpfs v.s. swapoff test should be tested, too. |