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view tests/fixtures/replace_branch_with_branch.sh @ 889:7a98fbadcae9

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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 2723152c8111
children
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#!/bin/sh

RSVN="`pwd`/rsvn.py"
export PATH=/bin:/usr/bin
mkdir temp
cd temp

svnadmin create repo
svn co file://`pwd`/repo wc

cd wc
mkdir trunk branches
cd trunk
echo a > a
cd ..
svn add *
svn ci -m 'initial'

svn up
svn cp trunk branches/branch1
svn ci -m 'branch1'
svn up
echo b > branches/branch1/b
echo d > branches/branch1/d
mkdir branches/branch1/dir
echo e > branches/branch1/dir/e
echo f > branches/branch1/f
echo g > branches/branch1/g
svn add branches/branch1/b branches/branch1/d branches/branch1/dir \
    branches/branch1/f branches/branch1/g
svn ci -m 'add b to branch1'
svn cp trunk branches/branch2
svn ci -m 'branch2'
svn up
echo c > branches/branch2/c
mkdir branches/branch2/dir
echo e2 > branches/branch2/dir/e
echo f2 > branches/branch2/f
svn add branches/branch2/c branches/branch2/dir branches/branch2/f
svn ci -m 'add c to branch2'
svn up

# Clobber branch1 with branch2
cd ..
cat > clobber.rsvn <<EOF
rdelete branches/branch1
rcopy branches/branch2 branches/branch1
rcopy branches/branch1/d branches/branch1/a
rcopy branches/branch1/dir branches/branch1/dir
rcopy branches/branch1/dir branches/branch1/dir2
rcopy branches/branch1/f branches/branch1/f
rcopy branches/branch1/g branches/branch1/g
EOF

python $RSVN --message=blah --username=evil `pwd`/repo < clobber.rsvn

svnadmin dump repo > ../replace_branch_with_branch.svndump