Mercurial > hgsubversion
view tests/fixtures/replace_trunk_with_branch.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 | 22162380c4b9 |
| children |
line wrap: on
line source
SVN-fs-dump-format-version: 2 UUID: 5b65bade-98f3-4993-a01f-b7a6710da339 Revision-number: 0 Prop-content-length: 56 Content-length: 56 K 8 svn:date V 27 2008-12-16T16:37:53.651472Z PROPS-END Revision-number: 1 Prop-content-length: 106 Content-length: 106 K 7 svn:log V 7 initial K 10 svn:author V 5 Augie K 8 svn:date V 27 2008-12-16T16:37:54.139835Z PROPS-END Node-path: branches 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/alpha Node-kind: file Node-action: add Prop-content-length: 10 Text-content-length: 6 Text-content-md5: 9f9f90dbe3e5ee1218c86b8839db1995 Content-length: 16 PROPS-END alpha Node-path: trunk/beta Node-kind: file Node-action: add Prop-content-length: 10 Text-content-length: 5 Text-content-md5: f0cf2a92516045024a0c99147b28f05b Content-length: 15 PROPS-END beta Node-path: trunk/gamma Node-kind: file Node-action: add Prop-content-length: 10 Text-content-length: 6 Text-content-md5: 303febb9068384eca46b5b6516843b35 Content-length: 16 PROPS-END gamma Revision-number: 2 Prop-content-length: 105 Content-length: 105 K 7 svn:log V 6 branch K 10 svn:author V 5 Augie K 8 svn:date V 27 2008-12-16T16:37:57.116844Z PROPS-END Node-path: branches/test Node-kind: dir Node-action: add Node-copyfrom-rev: 1 Node-copyfrom-path: trunk Revision-number: 3 Prop-content-length: 103 Content-length: 103 K 7 svn:log V 4 Mod. K 10 svn:author V 5 Augie K 8 svn:date V 27 2008-12-16T16:37:59.118952Z PROPS-END Node-path: branches/test/alpha Node-kind: file Node-action: change Text-content-length: 10 Text-content-md5: 54add8695a828f4e66224b1ecfd9c576 Content-length: 10 alpha foo Revision-number: 4 Prop-content-length: 102 Content-length: 102 K 7 svn:log V 4 blah K 10 svn:author V 4 evil K 8 svn:date V 27 2008-12-16T16:38:00.236345Z PROPS-END Node-path: trunk Node-kind: dir Node-action: delete Node-path: trunk Node-kind: dir Node-action: add Node-copyfrom-rev: 3 Node-copyfrom-path: branches/test