tree 47d598787c0b540449dad1b586e28482603553ec
parent a07008fbecdf65ef7ffd9b90ae3a5c0efb422d46
author Li Wang <liwang@redhat.com> 1497411510 +0800
committer Cyril Hrubis <chrubis@suse.cz> 1497518346 +0200

dio: reduce the number of cycles

These two cases (dio29/30) takes about 100 minutes, but they're not
stress test, so I suggest reducing the number of cycles.

After the change on my RHEL-7.3 (23G RAM, 24 CPU(s), x86_64) box, it
still takes almost 9 mins.

  diotest06    1  TPASS  :  Read with Direct IO, Write without
  diotest06    2  TPASS  :  Write with Direct IO, Read without
  diotest06    3  TPASS  :  Read, Write with Direct IO
  diotest06    0  TINFO  :  3 testblocks 1000 iterations with 100 children completed

  real	8m4.805s
  user	71m36.722s
  sys	8m51.649s

[From Eryu:

 I ran diotest30 10 times with "-i 100" and 8 of them failed. IIRC, it
 was not 100% reproduced either when I first saw the test failure in
 4.10-rc kernel testing. So I think ~80% probability to reproduce is
 fine.]

Signed-off-by: Li Wang <liwang@redhat.com>
Acked-by: Eryu Guan <eguan@redhat.com>
Acked-by: Cyril Hrubis <chrubis@suse.cz>