Messages in this thread | | | Date | Wed, 14 Mar 2012 21:13:02 +0000 (GMT) | From | Holger Kiehl <> | Subject | Re: [patch 0/7] Add TRIM support for raid linear/0/1/10 |
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On Wed, 14 Mar 2012, Shaohua Li wrote:
> Maybe the discard runs slow with small size request in the disk. > please drop patch "blk: add plug for blkdev_issue_discard" and try again. Since > we can't do merge, the plug just introduces latency. > Tried again without the patch applied, but there is only a very small performance increase (520->600 agains 4000 fps without discard).
The benchmark creates lots of small files (2 KiB) and deletes them again.
> if it doesn't help, please capture a blktrace when you do the benchmark and > send it to me. > Ok, I will do this tomorrow. Need some sleep :-)
Thanks for your work on supporting discard in MD!
Regards, Holger
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