Re: Making blame even faster

Daniel Berlin wrote:

>>It depends on your repository, but probably yes.
>>
>>-- Brane
>>
>>
>
>
>Just to followup:
>
>Brane's timings on windows showed that for the gcc combine.c file (which
>had ~1500 revisions, spread out across branches, etc), we had
>
>blame on an bdb repo with vdelta: 40 seconds
>blame on an bdb repo with xdelta: 10 seconds
>
>blame on an fsfs repo with vdelta: 108 seconds
>blame on an fsfs repo with xdelta: 105 seconds
>
>
I've put the timings on http://www.xbc.nu/svn/Xdelta_Performace.html.

There's no doubt that the increase in repository size is more than
compensated by the increase in undeltification speed. With Peter's
patch, this now holds for FSFS as well as BDB.

When comparing both speed and repository size, BDB still leads in this
particular test (3.6 times faster vs. 2.3 times larger repo).

-- Brane

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Received on Tue Feb 15 12:06:06 2005