Mercurial > hg
view tests/test-manifest-merging.t @ 18091:f7f8159caad3
ancestor: add lazy membership testing to lazyancestors
This also makes the perfancestorset command use lazy membership testing. In a
linear repository with over 400,000 commits, without this patch, hg
perfancestorset takes 0.80 seconds no matter how far behind we're looking.
With this patch, hg perfancestorset -- X takes:
Rev X Time
-1 0.00s
-4000 0.01s
-20000 0.04s
-80000 0.17s
-200000 0.43s
-300000 0.69s
0 0.88s
Thus, for revisions close to tip, we're up to several orders of magnitude
faster. At 0 we're around 10% slower.
author | Siddharth Agarwal <sid0@fb.com> |
---|---|
date | Tue, 18 Dec 2012 12:47:20 -0800 |
parents | f2719b387380 |
children |
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$ hg init base $ cd base $ echo 'alpha' > alpha $ hg ci -A -m 'add alpha' adding alpha $ cd .. $ hg clone base work updating to branch default 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd work $ echo 'beta' > beta $ hg ci -A -m 'add beta' adding beta $ cd .. $ cd base $ echo 'gamma' > gamma $ hg ci -A -m 'add gamma' adding gamma $ cd .. $ cd work $ hg pull -q $ hg merge 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) Update --clean to revision 1 to simulate a failed merge: $ rm alpha beta gamma $ hg update --clean 1 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd ..