The patch titled memcg: update memcg_test.txt has been added to the -mm tree. Its filename is memcg-update-memcg_testtxt.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: memcg: update memcg_test.txt From: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx> Update memcg_test.txt to describe how to test the move-charge feature. Signed-off-by: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> Acked-by: Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx> Cc: "Kirill A. Shutemov" <kirill@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- Documentation/cgroups/memcg_test.txt | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-) diff -puN Documentation/cgroups/memcg_test.txt~memcg-update-memcg_testtxt Documentation/cgroups/memcg_test.txt --- a/Documentation/cgroups/memcg_test.txt~memcg-update-memcg_testtxt +++ a/Documentation/cgroups/memcg_test.txt @@ -1,6 +1,6 @@ Memory Resource Controller(Memcg) Implementation Memo. -Last Updated: 2009/1/20 -Base Kernel Version: based on 2.6.29-rc2. +Last Updated: 2010/2 +Base Kernel Version: based on 2.6.33-rc7-mm(candidate for 34). Because VM is getting complex (one of reasons is memcg...), memcg's behavior is complex. This is a document for memcg's internal behavior. @@ -378,3 +378,21 @@ Under below explanation, we assume CONFI #echo 50M > memory.limit_in_bytes #echo 50M > memory.memsw.limit_in_bytes run 51M of malloc + + 9.9 Move charges at task migration + Charges associated with a task can be moved along with task migration. + + (Shell-A) + #mkdir /cgroup/A + #echo $$ >/cgroup/A/tasks + run some programs which uses some amount of memory in /cgroup/A. + + (Shell-B) + #mkdir /cgroup/B + #echo 1 >/cgroup/B/memory.move_charge_at_immigrate + #echo "pid of the program running in group A" >/cgroup/B/tasks + + You can see charges have been moved by reading *.usage_in_bytes or + 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. _ Patches currently in -mm which might be from nishimura@xxxxxxxxxxxxxxxxx are memcg-fix-oom-killing-a-child-process-in-an-other-cgroup.patch mm-migratec-kill-anon-local-variable-from-migrate_page_copy.patch cgroup-introduce-cancel_attach.patch cgroup-introduce-coalesce-css_get-and-css_put.patch memcg-add-interface-to-move-charge-at-task-migration.patch memcg-move-charges-of-anonymous-page.patch memcg-move-charges-of-anonymous-page-cleanup.patch memcg-improve-performance-in-moving-charge.patch memcg-avoid-oom-during-moving-charge.patch memcg-move-charges-of-anonymous-swap.patch memcg-move-charges-of-anonymous-swap-fix.patch memcg-improve-performance-in-moving-swap-charge.patch memcg-improve-performance-in-moving-swap-charge-fix.patch cgroup-implement-eventfd-based-generic-api-for-notifications.patch memcg-extract-mem_group_usage-from-mem_cgroup_read.patch memcg-rework-usage-of-stats-by-soft-limit.patch memcg-implement-memory-thresholds.patch memcg-implement-memory-thresholds-checkpatch-fixes.patch memcg-implement-memory-thresholds-checkpatch-fixes-fix.patch memcg-use-generic-percpu-instead-of-private-implementation.patch memcg-update-threshold-and-softlimit-at-commit-v2.patch memcg-share-event-counter-rather-than-duplicate-v2.patch memcg-update-memcg_testtxt.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html