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Re: [PATCH] Reduce full file reads by svn_wc_transmit_text_deltas to 2 (from 5)

From: Ivan Zhakov <chemodax_at_gmail.com>
Date: 2005-12-21 13:45:35 CET

On 12/21/05, Erik Huelsmann <ehuels@gmail.com> wrote:
> On 12/18/05, Erik Huelsmann <ehuels@gmail.com> wrote:
> > I wrote the patch below as an exercise to do further libsvn_wc
> > optimizations. Much of the machinery included can / will be reused in
> > later optimization proposals.
> >
> > I did it now, because I think this would nicely fit into the
> > 'libsvn_wc optimizing' 1.4 release.
> >
> > The patch is quite big and therefore, I'm posting before committing.
> > It passes all tests on my system, but it changes one of the most used
> > code paths in svn, so this is just to be on the safe side.
> >
> > I'd like to hear your comments!
> I did some timings last night, backed by some help on irc about
> testing performance in libsvn_wc.
> As it turns out, the change doesn't do much for the performance of the
> testing framework. Most probably because the sleep_for_timestamps()
> calls.
FYI: I have tryed subversion test suite with noop
sleep_for_timestamps() -- it is twice faster than with it. (original
svn test suite takes 1600 second on my laptop and 800 seconds with
noop sleep_for_timestamps()

Ivan Zhakov
Received on Sun Dec 25 03:38:00 2005

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