Subversion performance (issue #1429 et al)

Obtaining profiling data is time consuming (and painful when you
find out that your run didn't get you any data). I've upgraded
my system (reinstalling a system is more accurate) to get a more
complete toolkit to do profiling and analysis.

In the mean time I'd like to give Brandon a big 'Thank You!' for
his profiling data. We are going to need more, but it helps
a great deal in identifying problem areas.

Now if I'm reading things right:

svn_fs_file_md5_checksum 8.63%
svn_fs_is_dir 9.52% (19.78%)
send_text_delta 16.10% *
delta_proplists 18.58% (20.74%)
delta_dirs 13.82% ** ( 1.40%)
svn_wc__run_log 14.50%

* 8.66% of which in vdelta

** of which 2.16% can be attributed to delta_proplists
   and 10.26% to svn_fs_is_dir.

Of concern is that svn_wc__run_log looks like it is mostly operating
on xml. The entire close_file calling svn_wc__run_log takes 19.49%
in total.

In short, we need to look at svn_fs_is_dir and delta_proplists
at the very least.

Sander

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Received on Thu Aug 14 16:48:14 2003