Mercurial > hgsubversion
view tests/fixtures/executable_file_empty_prop.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 | 5497d1264b4d |
| children |
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SVN-fs-dump-format-version: 2 UUID: 60adb0cc-4d5c-4038-bbb4-90f4595cf81c Revision-number: 0 Prop-content-length: 56 Content-length: 56 K 8 svn:date V 27 2008-11-25T15:02:16.557895Z PROPS-END Revision-number: 1 Prop-content-length: 115 Content-length: 115 K 7 svn:log V 15 Basic structure K 10 svn:author V 5 Augie K 8 svn:date V 27 2008-11-25T15:02:45.454954Z 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: 103 Content-length: 103 K 7 svn:log V 4 blah K 10 svn:author V 5 Augie K 8 svn:date V 27 2008-11-25T15:03:45.151223Z PROPS-END Node-path: trunk/foo Node-kind: file Node-action: add Prop-content-length: 36 Text-content-length: 4 Text-content-md5: c157a79031e1c40f85931829bc5fc552 Content-length: 40 K 14 svn:executable V 0 PROPS-END bar