On Sun, 27 Dec 2009 04:08:58 +0200 "Kirill A. Shutemov" <kirill@xxxxxxxxxxxxx> wrote: > This patchset introduces eventfd-based API for notifications in cgroups and > implements memory notifications on top of it. > > It uses statistics in memory controler to track memory usage. > > Output of time(1) on building kernel on tmpfs: > > Root cgroup before changes: > make -j2 506.37 user 60.93s system 193% cpu 4:52.77 total > Non-root cgroup before changes: > make -j2 507.14 user 62.66s system 193% cpu 4:54.74 total > Root cgroup after changes (0 thresholds): > make -j2 507.13 user 62.20s system 193% cpu 4:53.55 total > Non-root cgroup after changes (0 thresholds): > make -j2 507.70 user 64.20s system 193% cpu 4:55.70 total > Root cgroup after changes (1 thresholds, never crossed): > make -j2 506.97 user 62.20s system 193% cpu 4:53.90 total > Non-root cgroup after changes (1 thresholds, never crossed): > make -j2 507.55 user 64.08s system 193% cpu 4:55.63 total > > Any comments? > Hmm, 2 secs of overhead is added by this. (larger than expected.) But optimization/claun up after merging is okay to me because the function itself is attractive. Thanks, -Kame > v3 -> v4: > - documentation. > > v2 -> v3: > - remove [RFC]; > - rebased to 2.6.33-rc2; > - fixes based on comments; > - fixed potential race on event removing; > - use RCU-protected arrays to track trasholds. > > v1 -> v2: > - use statistics instead of res_counter to track resource usage; > - fix bugs with locking. > > v0 -> v1: > - memsw support implemented. > > Kirill A. Shutemov (4): > cgroup: implement eventfd-based generic API for notifications > memcg: extract mem_group_usage() from mem_cgroup_read() > memcg: rework usage of stats by soft limit > memcg: implement memory thresholds > > Documentation/cgroups/cgroups.txt | 20 ++ > Documentation/cgroups/memory.txt | 19 ++- > include/linux/cgroup.h | 24 +++ > kernel/cgroup.c | 208 ++++++++++++++++++++++- > mm/memcontrol.c | 348 ++++++++++++++++++++++++++++++++++--- > 5 files changed, 590 insertions(+), 29 deletions(-) > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
