Mercurial > hgsubversion
view tests/fixtures/empty-log-message.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 | cc1d4aa3ba41 |
| children |
line wrap: on
line source
SVN-fs-dump-format-version: 2 UUID: 2abea918-74b5-4124-b744-a1f76c91de90 Revision-number: 0 Prop-content-length: 56 Content-length: 56 K 8 svn:date V 27 2010-11-18T14:30:05.275138Z PROPS-END Revision-number: 1 Prop-content-length: 100 Content-length: 100 K 7 svn:log V 0 K 10 svn:author V 6 danchr K 8 svn:date V 27 2010-11-18T14:30:36.517160Z 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 Node-path: trunk/A Node-kind: file Node-action: add Prop-content-length: 10 Text-content-length: 0 Text-content-md5: d41d8cd98f00b204e9800998ecf8427e Text-content-sha1: da39a3ee5e6b4b0d3255bfef95601890afd80709 Content-length: 10 PROPS-END