Re: [BENCHMARK] I/O regression after 2.6.0-test5

[Nick Piggin]

rwhron@xxxxxxxxxxxxx wrote:

> There was about a 50% regression in jobs/minute in AIM7
> database workload on quad P3 Xeon.  The CPU time has not
> gone up, so the extra run time is coming from something
> else.  (I/O or I/O scheduler?)
>
> tiobench sequential reads has a significant regression too.
>
> Regression appears unrelated to filesystem type.
>
> dbench was not affected.
>
> The AIM7 was run on ext2.

Yeah I'd say its all due to the IO scheduler. There is a problem
I'm thinking about how to fix - its the likely cause of this too.


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