Mercurial > hgsubversion
view tests/fixtures/simple_branch.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> |
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date | Sat, 12 May 2012 05:38:34 -0700 |
parents | bb00f7ca5b8c |
children |
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#!/bin/sh # # Generate simple_branch.svndump # mkdir temp cd temp mkdir project-orig cd project-orig mkdir trunk branches tags cd .. svnadmin create testrepo svnurl=file://`pwd`/testrepo svn import --username durin project-orig $svnurl -m "Empty dirs." svn co $svnurl project cd project echo 'file: alpha' > trunk/alpha svn add trunk/alpha svn ci --username durin -m 'Add alpha' echo 'Data of beta' > trunk/beta svn add trunk/beta svn ci --username durin -m 'Add beta' svn up svn cp trunk branches/the_branch svn ci --username durin -m 'Make a branch' cd .. svnadmin dump testrepo > ../simple_branch.svndump