Mercurial > hg
view tests/test-inotify-dirty-dirstate.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 | f2719b387380 |
children |
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issues when status queries are issued when dirstate is dirty $ "$TESTDIR/hghave" inotify || exit 80 $ echo "[extensions]" >> $HGRCPATH $ echo "inotify=" >> $HGRCPATH $ echo "fetch=" >> $HGRCPATH issue1810: inotify and fetch $ hg init test; cd test $ hg inserve -d --pid-file=../hg.pid $ cat ../hg.pid >> "$DAEMON_PIDS" $ echo foo > foo $ hg add adding foo $ hg ci -m foo $ cd .. $ hg --config "inotify.pidfile=../hg2.pid" clone test test2 updating to branch default 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cat ../hg2.pid >> "$DAEMON_PIDS" $ cd test2 $ echo bar > bar $ hg add adding bar $ hg ci -m bar $ cd ../test $ echo spam > spam $ hg add adding spam $ hg ci -m spam $ cd ../test2 $ hg st abort, outstanding changes $ hg fetch -q $ hg st $ cd .. issue1719: inotify and mq $ echo "mq=" >> $HGRCPATH $ hg init test-1719 $ cd test-1719 inserve $ hg inserve -d --pid-file=../hg-test-1719.pid $ cat ../hg-test-1719.pid >> "$DAEMON_PIDS" $ echo content > file $ hg add file $ hg qnew -f test.patch $ hg status $ hg qpop popping test.patch patch queue now empty st should not output anything $ hg status $ hg qpush applying test.patch now at: test.patch st should not output anything $ hg status $ hg qrefresh $ hg status $ cd ..