Mercurial > hgsubversion
view tests/fixtures/branchmap.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 | 8e025a6f0db4 |
| children |
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SVN-fs-dump-format-version: 2 UUID: e45f170d-c19e-4c14-836b-556bb41c9429 Revision-number: 0 Prop-content-length: 56 Content-length: 56 K 8 svn:date V 27 2010-02-23T17:55:37.753400Z PROPS-END Revision-number: 1 Prop-content-length: 100 Content-length: 100 K 7 svn:log V 3 btt K 10 svn:author V 3 djc K 8 svn:date V 27 2010-02-23T17:55:38.066481Z PROPS-END Node-path: branches Node-kind: dir Node-action: add Prop-content-length: 10 Content-length: 10 PROPS-END Node-path: tags Node-kind: dir Node-action: add Prop-content-length: 10 Content-length: 10 PROPS-END Node-path: trunk 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 9 Add file. K 10 svn:author V 3 djc K 8 svn:date V 27 2010-02-23T17:55:39.058424Z PROPS-END Node-path: trunk/a Node-kind: file Node-action: add Prop-content-length: 10 Text-content-length: 2 Text-content-md5: 60b725f10c9c85c70d97880dfe8191b3 Text-content-sha1: 3f786850e387550fdab836ed7e6dc881de23001b Content-length: 12 PROPS-END a Revision-number: 3 Prop-content-length: 119 Content-length: 119 K 7 svn:log V 21 Branch to be renamed. K 10 svn:author V 3 djc K 8 svn:date V 27 2010-02-23T17:55:42.051658Z PROPS-END Node-path: branches/badname Node-kind: dir Node-action: add Node-copyfrom-rev: 2 Node-copyfrom-path: trunk Revision-number: 4 Prop-content-length: 119 Content-length: 119 K 7 svn:log V 21 Branch to be unnamed. K 10 svn:author V 3 djc K 8 svn:date V 27 2010-02-23T17:55:45.050455Z PROPS-END Node-path: branches/feature Node-kind: dir Node-action: add Node-copyfrom-rev: 3 Node-copyfrom-path: trunk