On Aug 04, 2021 / 16:53, Ankit Kumar wrote:
> Existing random zone index generation logic is dependent on the file size.
> For smaller I/O sizes the random zone index always return a particular
> section of open zones. As this index is used to return one of the open zones,
> it was observed that after one of the max_open_zones / job_max_open_zones limit
> is reached all further I/O's are redirected to only a few open zones till they
> are full.
>
> This patch modifies the random zone index genration logic so that it is uniform
> across all the open zones.
>
> It reverts part of the commit 6463db6c1
> ('fio: fix interaction between offset/size limited threads and
> "max_open_zones"')
>
> Signed-off-by: Ankit Kumar <ankit.kumar@xxxxxxxxxxx>
Looks good to me. Also, I confirmed that this patch improves the randomness of
open zone selection, and it preserves the intent of the commit 6463db6c1.
Tested-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@xxxxxxx>
Reviewed-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@xxxxxxx>
--
Best Regards,
Shin'ichiro Kawasaki
