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Re: Why is subversion so slow?

From: Tobias Ringstrom <tori_at_ringstrom.mine.nu>
Date: 2003-04-09 00:41:52 CEST

On Tue, 8 Apr 2003, Greg Stein wrote:

> On Tue, Apr 08, 2003 at 02:37:43PM -0700, Christian Daudt wrote:
> > Look at your memory consumption if you're using it via http - swapping might
> > explain the difference. httpd still grows to many hundreds of megabytes
> > regularly when I'm using it (my simple solution was: install more memory ;-)
>
> Hunh? It shouldn't do that at all. What version are you using?
>
> No... the speed is simply due to a *lot* of I/O on the client. We also make
> quite a few roundtrip requests to the server, and also some needless
> requests. These things add up.

And don't forget the gazillion of fsync() calls on the server side as I
reported last week. I got over 600 fsync() calls on the server for a 30
file repository checkout. The drive sounds as if it's going to jump out
of the case. I do not know how mush performance this steals though.

It seems ra_svn and ra_file is *a lot* faster than ra_dav. Do you think
ra_dav will ever be as fast as ra_svn and ra_file, or is there a
fundamental performance problem with the dav protocol?

/Tobias

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Received on Wed Apr 9 00:42:38 2003

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