Mercurial > hgsubversion
view tests/fixtures/truncatedhistory.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 | 3b60f223893a |
| children |
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SVN-fs-dump-format-version: 2 UUID: a632509c-657a-43d2-ae0b-85387476b20e Revision-number: 0 Prop-content-length: 56 Content-length: 56 K 8 svn:date V 27 2008-11-11T19:00:25.260082Z PROPS-END Revision-number: 1 Prop-content-length: 114 Content-length: 114 K 7 svn:log V 12 init project K 10 svn:author V 7 pmezard K 8 svn:date V 27 2008-11-11T19:00:25.322759Z PROPS-END Node-path: project1 Node-kind: dir Node-action: add Prop-content-length: 10 Content-length: 10 PROPS-END Node-path: project2 Node-kind: dir Node-action: add Prop-content-length: 10 Content-length: 10 PROPS-END Revision-number: 2 Prop-content-length: 106 Content-length: 106 K 7 svn:log V 5 add a K 10 svn:author V 7 pmezard K 8 svn:date V 27 2008-11-11T19:00:26.173269Z PROPS-END Node-path: project1/a Node-kind: file Node-action: add Prop-content-length: 10 Text-content-length: 2 Text-content-md5: 60b725f10c9c85c70d97880dfe8191b3 Content-length: 12 PROPS-END a Revision-number: 3 Prop-content-length: 117 Content-length: 117 K 7 svn:log V 15 rename project1 K 10 svn:author V 7 pmezard K 8 svn:date V 27 2008-11-11T19:00:29.152593Z PROPS-END Node-path: project2/trunk Node-kind: dir Node-action: add Node-copyfrom-rev: 2 Node-copyfrom-path: project1 Prop-content-length: 34 Content-length: 34 K 13 svn:mergeinfo V 0 PROPS-END Node-path: project1 Node-action: delete Revision-number: 4 Prop-content-length: 106 Content-length: 106 K 7 svn:log V 5 add b K 10 svn:author V 7 pmezard K 8 svn:date V 27 2008-11-11T19:00:30.178261Z PROPS-END Node-path: project2/trunk/b Node-kind: file Node-action: add Prop-content-length: 10 Text-content-length: 2 Text-content-md5: 3b5d5c3712955042212316173ccf37be Content-length: 12 PROPS-END b