This was discussed on the mailing list, but no solution has been found yet. I'm
filing this as an issue so it won't get lost:
Matt Doran reported:
In my testing of 1.1rc1 on windows (W2K SP4), I've noticed a big performance
regression on 'svn status'. I'm not sure if this behaviour occurs in other
commands, but I've examined svn status in some detail.
I have a large repository that contains about 5000 files, with some
directories containing hundreds of files. When I do an 'svn status' I get
the following results:
SVN 1.0.6: ~ 4 secs
SVN 1.1rc1: ~ 38 secs !!
I used the Filemon utility from sysinternals to try to determine what it
happening. It looks like 1.1 excessively hits 'iconv' files. (e.g.
windows-1252.so, utf-8.so, etc)
In 1.0 it appears to hit these files early in the process, but then doesn't
touch them while checking the *.svn-work and *.svn-base file.
In 1.1 however for *every* hit on *.svn-work, etc you get multiple hits to
various iconv file. They always accessed in the following order:
* cp1252.so (attempted open once, not found)
* windows-cp1252.so (opened, closed, stat'd 3 times)
* _tbl_simple.so (opened, closed, stat'd 3 times)
* cp1252.so (attempted open once, not found)
* windows-cp1252.so (opened, closed, stat'd 3 times)
* utf-8.so (opened, closed, stat'd 3 times)
-----------------------------------------------
The mailing list threads can be found here:
http://www.contactor.se/~dast/svn/archive-2004-08/0131.shtml
http://www.contactor.se/~dast/svn/archive-2004-08/0367.shtml
Note: I've set the priority to 1 because the performance regression is really,
really serious on Windows (don't know about Linux, but my guess is that it's
noticeable there too). I did some tests with TortoiseSVN built against the 1.1.x
branch of Subversion, and I can say that it's not usable that way. Even though I
patched libapriconv which makes it even slightly faster in loading the *.so
files than the original version, it still takes 10 times longer to get the
status, start a commit, update or any other command translating paths/urls
from/to UTF8. Without this fixed, I can't release a TortoiseSVN version linked
with 1.1.0 of Subversion - if the explorer hangs for minutes people would kill me!
Bug
Blocker