Re: 2.5.70-mm9

From: Mingming Cao (
Date: Sat Jun 14 2003 - 19:41:29 EST

On Sat, 2003-06-14 at 01:01, Andrew Morton wrote:

> Was elevator=deadline observed to fail in earlier kernels? If not then it
> may be an anticipatory scheduler bug. It certainly had all the appearances
> of that.
Yes, with elevator=deadline the many fsx tests failed on 2.5.70-mm5.
> So once you're really sure that elevator=deadline isn't going to fail,
> could you please test elevator=as?
Ok, the deadline test was run for 10 hours then I stopped it (for the
elevator=as test).

But the test on elevator=as (2.5.70-mm9 kernel) still failed, same
problem. Some fsx tests are sleeping on io_schedule().

Next I think I will re-run test on elevator=deadline for 24 hours, to
make sure the problem is really gone there. After that maybe try a
different Qlogic Driver, currently I am using the driver from Qlogic
company(QLA2XXX V8).



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