Messages in this thread | | | Subject | Re: Ocfs2 performance bugs of doom | From | Andi Kleen <> | Date | 07 Mar 2006 04:34:12 +0100 |
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Mark Fasheh <mark.fasheh@oracle.com> writes:
> On Sun, Mar 05, 2006 at 08:59:50PM -0800, Daniel Phillips wrote: > > So that hack apparently improves the bucket distribution quite a bit, but > > look, the bad old linear systime creep is still very obvious. For that > > there is no substitute for lots of buckets. > Yes, I think the way to go right now is to allocate an array of pages and > index into that. We can make the array size a mount option so that the > default can be something reasonable ;)
Did you actually do some statistics how long the hash chains are? Just increasing hash tables blindly has other bad side effects, like increasing cache misses.
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