Add support for blkio cgroups on Linux
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/HOWTO b/HOWTO
index 9b3a684..7a7d14e 100644
--- a/HOWTO
+++ b/HOWTO
@@ -994,6 +994,7 @@
for doing these time calls will be excluded from other
uses. Fio will manually clear it from the CPU mask of other
jobs.
+
continue_on_error=bool Normally fio will exit the job on the first observed
failure. If this option is set, fio will continue the job when
there is a 'non-fatal error' (EIO or EILSEQ) until the runtime
@@ -1003,6 +1004,21 @@
given in the stats is the first error that was hit during the
run.
+cgroup_root=str Root of the mounted blkio cgroup file systems. This is a Linux
+ specific IO controller. If your system doesn't have it mounted,
+ you can do so with:
+
+ # mount -t cgroup -o blkio none /cgroup
+
+ The cgroup_root defaults to /cgroup, if mounted elsewhere
+ please specify this option.
+
+cgroup=str Add job to this control group. If it doesn't exist, it will
+ be created.
+
+cgroup_weight=int Set the weight of the cgroup to this value. See
+ the documentation that comes with the kernel, allowed values
+ are in the range of 100..1000.
6.0 Interpreting the output
---------------------------