Mercurial > hg
view tests/test-convert-svn-tags.t @ 16363:2cdd7e63211b
parsers: incrementally parse the revlog index in C
We only parse entries in a revlog index file when they are actually
needed, and cache them when first requested.
This makes a huge difference to performance on large revlogs when
accessing the tip revision or performing a handful of numeric lookups
(very common cases). For instance, "hg --time tip --template {node}"
on a tree with 300,000 revs takes 0.15 before, 0.02 after.
Even for revlog-intensive operations (e.g. running "hg log" to
completion), the lazy approach is about 1% faster than the eager
parse_index2.
author | Bryan O'Sullivan <bryano@fb.com> |
---|---|
date | Thu, 05 Apr 2012 13:00:35 -0700 |
parents | 43b3b761d9d1 |
children | 2da47de36b6f |
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$ "$TESTDIR/hghave" svn svn-bindings || exit 80 $ cat >> $HGRCPATH <<EOF > [extensions] > convert = > graphlog = > EOF $ svnadmin create svn-repo $ svnadmin load -q svn-repo < "$TESTDIR/svn/tags.svndump" Convert $ hg convert --datesort svn-repo A-hg initializing destination A-hg repository scanning source... sorting... converting... 5 init projA 4 adda 3 changea 2 changea2 1 changea3 0 changea updating tags $ cd A-hg $ hg glog --template '{rev} {desc|firstline} tags: {tags}\n' o 6 update tags tags: tip | o 5 changea tags: trunk.goodtag | o 4 changea3 tags: | o 3 changea2 tags: trunk.v1 | o 2 changea tags: | o 1 adda tags: | o 0 init projA tags: $ hg tags -q tip trunk.goodtag trunk.v1 $ cd .. Convert without tags $ hg convert --datesort --config convert.svn.tags= svn-repo A-notags-hg initializing destination A-notags-hg repository scanning source... sorting... converting... 5 init projA 4 adda 3 changea 2 changea2 1 changea3 0 changea $ hg -R A-notags-hg tags -q tip