diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/cgroup-v2.txt | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/Documentation/cgroup-v2.txt b/Documentation/cgroup-v2.txt index 5ac2fbde97e6..e6101976e0f1 100644 --- a/Documentation/cgroup-v2.txt +++ b/Documentation/cgroup-v2.txt @@ -852,13 +852,25 @@ PAGE_SIZE multiple when read back. The number of times the cgroup's memory usage was about to go over the max boundary. If direct reclaim - fails to bring it down, the OOM killer is invoked. + fails to bring it down, the cgroup goes to OOM state. oom - The number of times the OOM killer has been invoked in - the cgroup. This may not exactly match the number of - processes killed but should generally be close. + The number of time the cgroup's memory usage was + reached the limit and allocation was about to fail. + + Depending on context result could be invocation of OOM + killer and retrying allocation or failing alloction. + + Failed allocation in its turn could be returned into + userspace as -ENOMEM or siletly ignored in cases like + disk readahead. For now OOM in memory cgroup kills + tasks iff shortage has happened inside page fault. + + oom_kill + + The number of processes belonging to this cgroup + killed by any kind of OOM killer. memory.stat |