Mercurial > hgsubversion
view tests/fixtures/executebit.sh @ 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 | c35f59aa200e |
| children |
line wrap: on
line source
#!/bin/sh # # Generate executebit.svndump # mkdir temp cd temp mkdir project-orig cd project-orig mkdir trunk cd .. svnadmin create testrepo svnurl=file://`pwd`/testrepo svn import project-orig $svnurl -m "init project" svn co $svnurl project cd project/trunk echo text > text1 echo text > text2 touch empty1 touch empty2 python -c "file('binary1', 'wb').write('a\x00b')" python -c "file('binary2', 'wb').write('a\x00b')" svn add text1 text2 binary1 binary2 empty1 empty2 svn propset svn:mime-type application/octet-stream binary1 binary2 svn propset svn:executable yes binary1 text1 empty1 svn ci -m init # switch exec properties svn propdel svn:executable binary1 text1 empty1 svn propset svn:executable yes binary2 text2 empty2 svn ci -m changeexec cd ../.. svnadmin dump testrepo > ../executebit.svndump