Update cpus_allowed_policy=split documentation

Instead of erroring out on fewer CPUs than threads/processes,
fio now does roundrobin over the set.

Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/HOWTO b/HOWTO
index ef2b631d849e7206323623e91d4e236157c58705..9a9f02a7bf6ec688a8bb5b546d6879a255de3990 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -936,8 +936,9 @@ cpus_allowed_policy=str Set the policy of how fio distributes the CPUs
                split   Each job will get a unique CPU from the CPU set.
 
                'shared' is the default behaviour, if the option isn't
-               specified. If split is specified, then fio will error out if
-               there are more jobs defined than CPUs given in the set.
+               specified. If split is specified, then fio will will assign
+               one cpu per job. If not enough CPUs are given for the jobs
+               listed, then fio will roundrobin the CPUs in the set.
 
 numa_cpu_nodes=str Set this job running on spcified NUMA nodes' CPUs. The
                arguments allow comma delimited list of cpu numbers,

diff --git a/fio.1 b/fio.1
index 863b0e093b38add8f5c86997e62f8b066f07b1bf..764e323ac8c21b182c85eca2519b714e43cef6ed 100644 (file)
--- a/fio.1
+++ b/fio.1
@@ -847,8 +847,9 @@ Each job will get a unique CPU from the CPU set.
 .RE
 .P
 \fBshared\fR is the default behaviour, if the option isn't specified. If
-\fBsplit\fR is specified, then fio will error out if there are more jobs
-defined than CPUs given in the set.
+\fBsplit\fR is specified, then fio will assign one cpu per job. If not enough
+CPUs are given for the jobs listed, then fio will roundrobin the CPUs in
+the set.
 .RE
 .P
 .TP