Dave Hansen [firstname.lastname@example.org] wrote:
> Bond, Andrew wrote:
> > This isn't as recent as I would like, but it will give you an idea.
> > Top 75 from readprofile. This run was not using bigpages though.
> > 00000000 total 7872 0.0066
> > c0105400 default_idle 1367 21.3594
> > c012ea20 find_vma_prev 462 2.2212
> > c0142840 create_bounce 378 1.1250
> > c0142540 bounce_end_io_read 332 0.9881
> Forgive my complete ignorane about TPC-C... Why do you have so much
> idle time? Are you I/O bound? (with that many disks, I sure hope not
> :) ) Or is it as simple as leaving profiling running for a bit before
> or after the benchmark was run?
The calls to create_bounce and bounce_end_io_read are indications that
some of your IO is being bounced and will not be running a peak
This is avoided by using the highmem IO changes which I believe are not
in the standard RH kernel. Unknown if that would address your idle time
-- Michael Anderson email@example.com
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This archive was generated by hypermail 2b29 : Mon Sep 23 2002 - 22:00:31 EST