Mercurial > hgsubversion
view tests/fixtures/unrelatedbranch.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 | ea65fe2b0856 |
children |
line wrap: on
line source
#!/bin/sh # # Generate unrelatedbranch.svndump # mkdir temp cd temp mkdir project-orig cd project-orig mkdir trunk mkdir branches cd .. svnadmin create testrepo svnurl=file://`pwd`/testrepo svn import project-orig $svnurl -m "init project" svn co $svnurl project cd project/trunk echo a > a svn add a svn ci -m "add a in trunk" cd ../branches # Create an unrelated branch with another file. It used to lead the converter # to think branch1 was a copy of trunk, even without copy information. mkdir branch1 echo b > branch1/b svn add branch1 svn ci -m "add b in branch1" # Make a real branch too for comparison svn cp ../trunk branch2 echo b > branch2/b svn add branch2/b svn ci -m "add b to branch2" # Add a file in the branch root for fun echo c > c svn add c svn ci -m "add c in branches/" # Even update it echo c >> c svn ci -m "change c" cd ../.. svnadmin dump testrepo > ../unrelatedbranch.svndump