diff options
author | Divyesh Shah <dpshah@google.com> | 2010-04-09 08:15:10 +0400 |
---|---|---|
committer | Jens Axboe <jens.axboe@oracle.com> | 2010-04-09 10:36:08 +0400 |
commit | cdc1184cf4a7bd99f5473a91244197accc49146b (patch) | |
tree | ecd572867bfa5a82fa4ed16d7303448c7ea7d24c /mm/quicklist.c | |
parent | 812d402648f4fc1ab1091b2172a46fc1b367c724 (diff) | |
download | linux-cdc1184cf4a7bd99f5473a91244197accc49146b.tar.xz |
blkio: Add io_queued and avg_queue_size stats
These stats are useful for getting a feel for the queue depth of the cgroup,
i.e., how filled up its queues are at a given instant and over the existence of
the cgroup. This ability is useful when debugging problems in the wild as it
helps understand the application's IO pattern w/o having to read through the
userspace code (coz its tedious or just not available) or w/o the ability
to run blktrace (since you may not have root access and/or not want to disturb
performance).
Signed-off-by: Divyesh Shah<dpshah@google.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'mm/quicklist.c')
0 files changed, 0 insertions, 0 deletions