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Re: FSFS performance concerns.

From: C. Michael Pilato <cmpilato_at_collab.net>
Date: 2007-10-31 17:58:40 CET

C. Michael Pilato wrote:
> I keep two svnsync'd mirrors on my laptop:
> 1. /usr/local/svn/subversion is an FSFS-backed mirror of
> http://svn.collab.net/repos/svn, currently up-to-date as of
> r26729.
> 2. /usr/local/svn/subversion-bdb is a BDB-backed mirror of
> /usr/local/svn/subversion, also at r26729.
> I've been noticing some real issues with history-tracing performance with
> the FSFS repository, so I did some quick-and-dirty runs of 'svn log' today:
> * 'svn log http://svn.collab.net/repos/svn/trunk -q' (remote, FSFS,
> 1.4.5) took about 35 seconds.
> * 'svn log file:///usr/local/svn/subversion/trunk -q' (local, FSFS,
> 1.5.0-dev) took about 6 minutes, 46 seconds.
> * 'svn log file:///usr/local/svn/subversion-bdb/trunk -q' (local, BDB,
> 1.5.0-dev) took about 6 seconds.
> What in the world has happened to FSFS in 1.5?!

Okay, folks, I dunno what's going on, but now I'm seeing the slowness on
FSFS and BDB on my local disk. Must be some local caching issue or
somesuch. Sorry for the false alarm. (And, if you have any idea how I can
debug and/or fix this on Ubuntu 7.10, that'd be beyond great.)

C. Michael Pilato <cmpilato@collab.net>
CollabNet   <>   www.collab.net   <>   Distributed Development On Demand

Received on Wed Oct 31 17:58:54 2007

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