Mercurial > hgsubversion
view tests/fixtures/copybeforeclose.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 | 1b9d004a8c0a |
| children |
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SVN-fs-dump-format-version: 2 UUID: 1e1f7d3f-4361-4205-84f8-c0d471d161d2 Revision-number: 0 Prop-content-length: 56 Content-length: 56 K 8 svn:date V 27 2009-06-11T15:51:46.768965Z 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 2009-06-11T15:51:47.134555Z 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 2009-06-11T15:51:48.129578Z 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: 104 Content-length: 104 K 7 svn:log V 7 Branch. K 10 svn:author V 3 djc K 8 svn:date V 27 2009-06-11T15:51:51.120532Z PROPS-END Node-path: branches/test Node-kind: dir Node-action: add Node-copyfrom-rev: 2 Node-copyfrom-path: trunk Revision-number: 4 Prop-content-length: 113 Content-length: 113 K 7 svn:log V 15 Move on branch. K 10 svn:author V 3 djc K 8 svn:date V 27 2009-06-11T15:51:54.124503Z PROPS-END Node-path: branches/test/b Node-kind: file Node-action: add Node-copyfrom-rev: 3 Node-copyfrom-path: branches/test/a Text-copy-source-md5: 60b725f10c9c85c70d97880dfe8191b3 Node-path: branches/test/a Node-action: delete Revision-number: 5 Prop-content-length: 111 Content-length: 111 K 7 svn:log V 13 Close branch. K 10 svn:author V 3 djc K 8 svn:date V 27 2009-06-11T15:51:57.130547Z PROPS-END Node-path: branches/test Node-action: delete