Re: [PATCH 0/3] more threaded delta patches

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On Mon, Sep 10, 2007 at 09:56:43AM +0200, Martin Koegler wrote:

> It should lower you CPU time. To verify it, I would check, that
> delta_cacheable returns 1 for most objects.

I checked, and it does (even without setting any config options, most
deltas in linux-2.6 fit under the "small delta size" limit).

> If most deltas are cacheable, maybe the CPU time is used by
> compressing the deltas at write time.

I tried profiling it, and create_delta was by far the main culprit.
However, that's not surprising, because that includes both the writing
and deltification process. Trying to profile without re-deltifying
doesn't work, since then the writing goes very quickly, as well. :)

-Peff
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