Re: Subversion performance (issue #1429 et al)

Sander Striker wrote:

>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
>
Which is horrible, especially since vdelta seems to get a lot of cache
misses. I wonder if those are caused by our appending new ops to a
vector while at the same time madly hopping around ~1M of source, target
and hashtable buffers, and what would happen if I went and interleaved
the ops list into the hash table. It would double the hash table size,
but modern CPUs should be able to put 2M into data cache with no problem
at all.

I'll try to reproduce the test case, then see what happens if I fiddle
with the allocation order in vdelta.

-- 
Brane Čibej   <brane_at_xbc.nu>   http://www.xbc.nu/brane/
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