Mercurial > hg
view tests/test-hgwebdirsym.t @ 17970:0b03454abae7
ancestor: faster algorithm for difference of ancestor sets
One of the major reasons rebase is slow in large repositories is
the computation of the detach set: the set of ancestors of the
changesets to rebase not in the destination parent. This is currently
done via a revset that does two walks all the way to the root of
the DAG. Instead of doing that, to find ancestors of a set <revs>
not in another set <common> we walk up the tree in reverse revision
number order, maintaining sets of nodes visited from <revs>, <common>
or both.
For the common case where the sets are close both topologically and
in revision number (relative to repository size), this has been
found to speed up rebase by around 15-20%. When the nodes are farther
apart and the DAG is highly branching, it is harder to say which
would win.
Here's how long computing the detach set takes in a linear repository
with over 400000 changesets, rebasing near tip:
Rebasing across 4 changesets
Revset method: 2.2s
New algorithm: 0.00015s
Rebasing across 250 changesets
Revset method: 2.2s
New algorithm: 0.00069s
Rebasing across 10000 changesets
Revset method: 2.4s
New algorithm: 0.019s
author | Siddharth Agarwal <sid0@fb.com> |
---|---|
date | Mon, 26 Nov 2012 11:46:51 -0800 |
parents | 953faba28e91 |
children | 7a9cbb315d84 |
line wrap: on
line source
Tests whether or not hgwebdir properly handles various symlink topologies. $ "$TESTDIR/hghave" serve symlink || exit 80 hide outer repo $ hg init $ hg init a $ echo a > a/a $ hg --cwd a ci -Ama -d'1 0' adding a $ mkdir webdir $ cd webdir $ hg init b $ echo b > b/b $ hg --cwd b ci -Amb -d'2 0' adding b $ hg init c $ echo c > c/c $ hg --cwd c ci -Amc -d'3 0' adding c $ ln -s ../a al $ ln -s ../webdir circle $ root=`pwd` $ cd .. $ cat > collections.conf <<EOF > [collections] > $root=$root > EOF $ hg serve -p $HGPORT -d --pid-file=hg.pid --webdir-conf collections.conf \ > -A access-collections.log -E error-collections.log $ cat hg.pid >> $DAEMON_PIDS should succeed $ "$TESTDIR/get-with-headers.py" localhost:$HGPORT '?style=raw' 200 Script output follows /al/ /b/ /c/ $ "$TESTDIR/get-with-headers.py" localhost:$HGPORT 'al/file/tip/a?style=raw' 200 Script output follows a $ "$TESTDIR/get-with-headers.py" localhost:$HGPORT 'b/file/tip/b?style=raw' 200 Script output follows b $ "$TESTDIR/get-with-headers.py" localhost:$HGPORT 'c/file/tip/c?style=raw' 200 Script output follows c should fail $ "$TESTDIR/get-with-headers.py" localhost:$HGPORT 'circle/al/file/tip/a?style=raw' 404 Not Found error: repository circle/al/file/tip/a not found [1] $ "$TESTDIR/get-with-headers.py" localhost:$HGPORT 'circle/b/file/tip/a?style=raw' 404 Not Found error: repository circle/b/file/tip/a not found [1] $ "$TESTDIR/get-with-headers.py" localhost:$HGPORT 'circle/c/file/tip/a?style=raw' 404 Not Found error: repository circle/c/file/tip/a not found [1] collections errors $ cat error-collections.log