Mercurial > hgsubversion
view tests/fixtures/subdir_is_file_prefix.svndump @ 889:7a98fbadcae9
revsets: huge speedups for fromsvn and svnrev
I have a hgsubversion repo that contains over 300,000 commits.
In that repo, this patch improves performance as follows:
hg --time log -r 'first(fromsvn())'
Before: 40.3 sec
After: 0.8 sec
hg --time log -r 'svnrev(350000)'
Before: 40.3 sec
After: 0.1 sec
Note: the performance of these revset implementations is very sensitive
to doing as little work as possible per line of the rev_map file.
I originally attempted to hide the file format details by hoisting the
parsing of each line up into RevMap.readmapfile, but the current less
abstract code is dramatically (10x or more) faster.
If the revmap file is missing, we error out and print a message
describing what to do.
| author | Bryan O'Sullivan <bryano@fb.com> |
|---|---|
| date | Sat, 12 May 2012 05:38:34 -0700 |
| parents | c6388ed0ec0a |
| children |
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SVN-fs-dump-format-version: 2 UUID: 924a052a-5e5a-4a8e-a677-da5565bec340 Revision-number: 0 Prop-content-length: 56 Content-length: 56 K 8 svn:date V 27 2011-03-04T12:33:29.342045Z PROPS-END Revision-number: 1 Prop-content-length: 123 Content-length: 123 K 7 svn:log V 22 Create directory flaf. K 10 svn:author V 6 danchr K 8 svn:date V 27 2011-03-04T12:34:00.349950Z PROPS-END Node-path: flaf Node-kind: dir Node-action: add Prop-content-length: 10 Content-length: 10 PROPS-END Revision-number: 2 Prop-content-length: 138 Content-length: 138 K 7 svn:log V 37 Create the file flaf.txt within flaf. K 10 svn:author V 6 danchr K 8 svn:date V 27 2011-03-04T12:45:01.701033Z PROPS-END Node-path: flaf/flaf.txt Node-kind: file Node-action: add Prop-content-length: 10 Text-content-length: 15 Text-content-md5: 8c0059c8f7998e8003836b8e8fcb74d7 Text-content-sha1: b7d680bc5411f46395c4ef267001e1a307d7b0d5 Content-length: 25 PROPS-END Goodbye world.