diff options
| author | Josef Bacik <josef@toxicpanda.com> | 2018-09-28 13:45:41 -0400 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-09-28 11:47:29 -0600 |
| commit | 22ed8a93adc7a9cbb2c0a0fc1d7f10068a1f84c1 (patch) | |
| tree | 2e1b6b870178f979740217aad4a0644c69a3811b /block/blk-mq.h | |
| parent | 9f60511a021e677c43b3e2d1a890e3d0d372e394 (diff) | |
blk-iolatency: deal with small samples
There is logic to keep cgroups that haven't done a lot of IO in the most
recent scale window from being punished for over-active higher priority
groups. However for things like ssd's where the windows are pretty
short we'll end up with small numbers of samples, so 5% of samples will
come out to 0 if there aren't enough. Make the floor 1 sample to keep
us from improperly bailing out of scaling down.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-mq.h')
0 files changed, 0 insertions, 0 deletions