* Andrew Morton <[email protected]> wrote:
> ooh, more performance testing. Thanks
>
> > * The overwriter task (on an 8GiB file), average over 10 runs:
> > o 2.6.24 - 300.88226 seconds
> > o 2.6.24 + Arjan's patch - 403.85505 seconds
> >
> > * The read-a-different-kernel-tree task, average over 10 runs:
> > o 2.6.24 - 46.8145945549 seconds
> > o 2.6.24 + Arjan's patch - 39.6430601119 seconds
> >
> > * The large-linear-read task (on an 8GiB file), average over 10 runs:
> > o 2.6.24 - 290.32522 seconds
> > o 2.6.24 + Arjan's patch - 386.34860 seconds
>
> These are *large* differences, making this a very signifcant patch.
> Much care is needed now.
and the numbers suggest it's mostly a severe performance regression.
That's not what i have expected - ho hum. Apologies for my earlier
"please merge it already!" whining.
Ingo
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