Laurent Laborde <kerdezixe(at)gmail(dot)com> wrote:
> BTW, if you have any idea to improve IO performance, i'll happily
> read it. We're 100% IO bound.
At the risk of stating the obvious, you want to make sure you have
high quality RAID adapters with large battery backed cache configured
to write-back.
If you haven't already done so, you might want to try
elevator=deadline.
> xfs ?
If you use xfs and have the aforementioned BBU cache, be sure to turn
write barriers off.
-Kevin