Re: mod_dav_svn performance

Big win which I found was that our Apache server had a default of
"KeepAlive off".

Changing this to KeepAlive on improved performance considerably.

http://httpd.apache.org/docs/2.0/mod/core.html#keepalive

"In some cases this has been shown to result in an almost 50% speedup in
latency times for HTML documents with many images."

Dg.

--
David Grierson
JPMorgan - IB Architecture - Source Code Management Consultant
GDP 228-5574 / DDI +44 141 228 5574 / Email david.x.grierson_at_jpmorgan.com
Alhambra House 6th floor, 45 Waterloo Street, Glasgow G2 6HS
 
John Waycott <javajohn_at_cox.net> 
25/02/2008 14:45
To
cc
users_at_subversion.tigris.org
Subject
Re: mod_dav_svn performance
Chris Rose wrote:
> We've just completed a migration from CVS to SVN, with the new 
> repository hosted on the same machine, same filesystem, and provided 
> by way of mod_dav_svn to our users.  What we're seeing is some nasty 
> divergence of performance;  SVN is taking on average twice the time to 
> check out source.  Is there any guidance available on improving the 
> performance of the server?  We cannot justify throwing additional 
> hardware at the problem at this time, so a software solution would be 
> preferred.
>
> Any suggestions?
>
If your clients have low-latency connections to the server, turning on 
http compression (mod deflate) in the Apache server may help. We found 
that it reduced our checkout times about 20%.
We also found virus scanning software can impact checkout times. We 
still leave it turned on because of our IT policy.
As others have stated, SVN will always be slower for checkout than CVS, 
but that is not the common operation.
-- John
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