examples: add new cmdprio_bssplit format examples

Add examples of the new cmdprio_bssplit format to cmdprio-bssplit.fio.

In this new format, a priority class and a priority level can be specified
in the cmdprio_bssplit entry itself.

Add the new cmdprio_bssplit format examples as new jobs, as the old format
is still supported.

Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Link: https://lore.kernel.org/r/20220203192814.18552-10-Niklas.Cassel@wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/examples/cmdprio-bssplit.fio b/examples/cmdprio-bssplit.fio
index 47e9a790605e388e341ac069e692057346127a93..f3b2fac02d1eba5706d98952721cbabbd8e44b66 100644 (file)
--- a/examples/cmdprio-bssplit.fio
+++ b/examples/cmdprio-bssplit.fio
@@ -1,17 +1,44 @@
 ; Randomly read/write a block device file at queue depth 16.
-; 40 % of read IOs are 64kB and 60% are 1MB. 100% of writes are 1MB.
-; 100% of the 64kB reads are executed at the highest priority and
-; all other IOs executed without a priority set.
 [global]
 filename=/dev/sda
 direct=1
 write_lat_log=prio-run.log
 log_prio=1
-
-[randrw]
 rw=randrw
-bssplit=64k/40:1024k/60,1024k/100
 ioengine=libaio
 iodepth=16
+
+; Simple cmdprio_bssplit format. All non-zero percentage entries will
+; use the same prio class and prio level defined by the cmdprio_class
+; and cmdprio options.
+[cmdprio]
+; 40% of read IOs are 64kB and 60% are 1MB. 100% of writes are 1MB.
+; 100% of the 64kB reads are executed with prio class 1 and prio level 0.
+; All other IOs are executed without a priority set.
+bssplit=64k/40:1024k/60,1024k/100
 cmdprio_bssplit=64k/100:1024k/0,1024k/0
 cmdprio_class=1
+cmdprio=0
+
+; Advanced cmdprio_bssplit format. Each non-zero percentage entry can
+; use a different prio class and prio level (appended to each entry).
+[cmdprio-adv]
+; 40% of read IOs are 64kB and 60% are 1MB. 100% of writes are 1MB.
+; 25% of the 64kB reads are executed with prio class 1 and prio level 1,
+; 75% of the 64kB reads are executed with prio class 3 and prio level 2.
+; All other IOs are executed without a priority set.
+stonewall
+bssplit=64k/40:1024k/60,1024k/100
+cmdprio_bssplit=64k/25/1/1:64k/75/3/2:1024k/0,1024k/0
+
+; Identical to the previous example, but with a default priority defined.
+[cmdprio-adv-def]
+; 40% of read IOs are 64kB and 60% are 1MB. 100% of writes are 1MB.
+; 25% of the 64kB reads are executed with prio class 1 and prio level 1,
+; 75% of the 64kB reads are executed with prio class 3 and prio level 2.
+; All other IOs are executed with prio class 2 and prio level 7.
+stonewall
+prioclass=2
+prio=7
+bssplit=64k/40:1024k/60,1024k/100
+cmdprio_bssplit=64k/25/1/1:64k/75/3/2:1024k/0,1024k/0