observed significant performance improvement using "delaylog" in a real-world application
niemayer at isg.de
Wed Aug 11 13:08:33 CDT 2010
On 08/11/2010 02:08 AM, Dave Chinner wrote:
> One thing that you might want to try to
> further improve performance is the logbsize=262144 option as well.
> That will help flush log IO faster by doing less IOs.
Tried that - but this did not have a positive effect.
(In fact a slightly negative one, but that could be within
the measurement accuracy).
> Also, if your workload is doing lots of fsync calls, then the
> optimisations I posted a few days ago should also help improve
> delaylog throughput.
We don't to any fsync's.
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