Messages in this thread | | | From | Jeff Moyer <> | Subject | Re: [PATCH] cfq-iosched: reduce write depth only if sync was delayed | Date | Wed, 09 Dec 2009 13:09:49 -0500 |
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Corrado Zoccolo <czoccolo@gmail.com> writes:
> The numbers look good. Now, there is no penalty in having low_latency > set for sequential writes, and just a small penalty for random ones. > The fact that random reads are faster with low_latency set is interesting. > Is the test is running with your patched tiobench (so that the number > of random operations is comparable with sequential ones)?
No, I forgot all about that. The number of random operations defaults to 4000, which is pretty low. I'll re-run the tests with a number comparable to the sequential runs. Sorry about that.
Cheers, Jeff
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