[PATCH] Add thinktime_spin parameter
If you specify thinktime currently, fio will sleep for the duration.
Apps will typically do some data processing before sleeping, so add
a thinktime_spin parameter to control how much CPU to burn before
sleeping.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/HOWTO b/HOWTO
index f61b4c1..8e6e29b 100644
--- a/HOWTO
+++ b/HOWTO
@@ -343,7 +343,14 @@
thinktime=int Stall the job x microseconds after an io has completed before
issuing the next. May be used to simulate processing being
- done by an application. See thinktime_blocks.
+ done by an application. See thinktime_blocks and
+ thinktime_spin.
+
+thinktime_spin=int
+ Only valid if thinktime is set - pretend to spend CPU time
+ doing something with the data received, before falling back
+ to sleeping for the rest of the period specified by
+ thinktime.
thinktime_blocks
Only valid if thinktime is set - control how many blocks