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| author | Shaohua Li <shli@fb.com> | 2017-03-27 19:51:37 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-03-28 16:02:20 +0200 |
| commit | 297e3d854784821d3b8ff3ae117f20d71f125504 (patch) | |
| tree | 1909a3ce719f5a434d4e4e7584424b3559738be0 /MAINTAINERS | |
| parent | blk-throttle: make sure expire time isn't too big (diff) | |
| download | linux-297e3d854784821d3b8ff3ae117f20d71f125504.tar.xz linux-297e3d854784821d3b8ff3ae117f20d71f125504.zip | |
blk-throttle: make throtl_slice tunable
throtl_slice is important for blk-throttling. It's called slice
internally but it really is a time window blk-throttling samples data.
blk-throttling will make decision based on the samplings. An example is
bandwidth measurement. A cgroup's bandwidth is measured in the time
interval of throtl_slice.
A small throtl_slice meanse cgroups have smoother throughput but burn
more CPUs. It has 100ms default value, which is not appropriate for all
disks. A fast SSD can dispatch a lot of IOs in 100ms. This patch makes
it tunable.
Since throtl_slice isn't a time slice, the sysfs name
'throttle_sample_time' reflects its character better.
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'MAINTAINERS')
0 files changed, 0 insertions, 0 deletions