On Apr 27, 2022 / 14:31, Bart Van Assche wrote:
> Some block devices, e.g. USB sticks, only support queue depth 1. The
> QD=1 code paths do not get tested routinely. Hence add tests for the
> QD=1 use case.
>
> Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
I tried this new test case on recent Fedora kernel 5.16.20-200.fc35.x86_64 and
Intel Core i9 machine, then observed failure:
$ sudo ./check block/032
block/032 (test I/O scheduler performance of null_blk with queue_depth 1) [failed]
bfq 679 vs 243: fail ... 679 vs 252: fail
kyber 542 vs 243: fail ... 551 vs 252: fail
mq-deadline 577 vs 243: fail ... 572 vs 252: fail
runtime 20.514s ... 20.660s
--- tests/block/032.out 2022-04-27 22:02:46.602861565 -0700
+++ /home/shin/kts/kernel-test-suite/src/blktests/results/nodev/block/032.out.bad2022-04-27 23:18:48.470170788 -0700
@@ -1,2 +1,2 @@
Running block/032
-Test complete
+Test failed
I tried v5.18-rcX kernel versions and machines (QEMU or VMware) but the test
case failed on all of the trials. Do I miss anything to make the test case pass?
--
Best Regards,
Shin'ichiro Kawasaki
