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Re: Subversion performance (issue #1429 et al)

From: <kfogel_at_collab.net>
Date: 2003-08-18 16:27:13 CEST

"Sander Striker" <striker@apache.org> writes:
> Well, that's a surprise. I expected to see libsvn_wc a lot higher up. The
> focus should be on libsvn_fs and libsvn_delta according to these figures.
> Or not :). The numbers don't take into account how much time is spent in
> libc, apr, etc., due to calls from libsvn_wc. It would be nice to
> have a tool
> that could calculate how much time can be attributed to each lib. Probably
> wouldn't be too hard to do. Also note that the percentages aren't real time,
> but rather CPU cycles. The real time analysis could point at libsvn_wc after
> all.

Uh, that seems like a pretty huge "if" :-). It would be entirely
understandable for a lot of time to be spent in non-SVN callees of
libsvn_wc. We have to find out if this is happening...

Sander, I propose the following experiment (unless you've done it
already?):

I'd like to compare 'checkout' times with 'export' times. Now, the
export editor is *almost* a straight cat of the repository data. But
it does do keyword and eol translation. I'd like to disable that
stuff, so 'export' really is just a raw bit pipe, and then compare
export and checkout times for various repositories.

Have you done something like this already? Would you like me to do it
and report back?

-Karl

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Received on Mon Aug 18 17:09:09 2003

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