Mercurial > hgsubversion
view tests/fixtures/test_no_dates.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 | c90cfa665b81 |
| children |
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SVN-fs-dump-format-version: 2 UUID: 3b9ee152-ff20-493a-9d97-5d739715df90 Revision-number: 0 Prop-content-length: 56 Content-length: 56 K 8 svn:date V 27 2009-04-08T10:33:20.055686Z PROPS-END Revision-number: 1 Prop-content-length: 55 Content-length: 55 K 7 svn:log V 4 init K 10 svn:author V 3 djc 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: 56 Content-length: 56 K 7 svn:log V 5 add a K 10 svn:author V 3 djc PROPS-END Node-path: trunk/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: 98 Content-length: 98 K 7 svn:log V 1 b K 10 svn:author V 3 djc K 8 svn:date V 27 2009-04-08T10:35:21.843827Z PROPS-END Node-path: trunk/a Node-kind: file Node-action: change Text-content-length: 3 Text-content-md5: daa8075d6ac5ff8d0c6d4650adb4ef29 Content-length: 3 ab Revision-number: 4 Prop-content-length: 52 Content-length: 52 K 7 svn:log V 1 c K 10 svn:author V 3 djc PROPS-END Node-path: trunk/a Node-kind: file Node-action: change Text-content-length: 4 Text-content-md5: 0bee89b07a248e27c83fc3d5951213c1 Content-length: 4 abc