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FSFS performance concerns.

From: C. Michael Pilato <cmpilato_at_collab.net>
Date: 2007-10-30 21:35:33 CET

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

  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?!

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

Received on Tue Oct 30 21:36:07 2007

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