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authorTejun Heo <tj@kernel.org>2019-08-29 01:06:00 +0300
committerJens Axboe <axboe@kernel.dk>2019-08-29 06:17:17 +0300
commit8504dea783b044cab620acbaef87b86ee84646fe (patch)
treecca537253cd81bd3aff9ab14f42d5036bf006515 /Documentation/admin-guide
parent6954ff185ee0811cdd2e0f388ff4dd7df17f11af (diff)
downloadlinux-8504dea783b044cab620acbaef87b86ee84646fe.tar.xz
blkcg: add tools/cgroup/iocost_coef_gen.py
Add a script which can be used to generate device-specific iocost linear model coefficients. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'Documentation/admin-guide')
-rw-r--r--Documentation/admin-guide/cgroup-v2.rst3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst
index 1521c7e554f5..3deacdc5e6d2 100644
--- a/Documentation/admin-guide/cgroup-v2.rst
+++ b/Documentation/admin-guide/cgroup-v2.rst
@@ -1529,6 +1529,9 @@ IO Interface Files
The IO cost model isn't expected to be accurate in absolute
sense and is scaled to the device behavior dynamically.
+ If needed, tools/cgroup/iocost_coef_gen.py can be used to
+ generate device-specific coefficients.
+
io.weight
A read-write flat-keyed file which exists on non-root cgroups.
The default is "default 100".