Mercurial > hg > mercurial-crew-with-dirclash
annotate rewrite-log @ 879:953ccddd57bd
dirstate walking optimizations
The repo walking code introduces a number of calls to dirstate.map.copy(),
significantly slowing down the walk on large trees. When a list of
files is passed to the walking code, we should only look at map entries
relevant to the file list passed in.
dirstate.filterfiles() is added to return a subset of the dirstate map.
The subset includes in files passed in, and if one of the files requested
is actually a directory, it includes any files inside that directory tree.
This brings the time for hg diff Makefile down from 1.7s to .3s on
a linux kernel repo.
Also, the diff command was unconditionally calling makewalk, leading
to an extra pass through repo.changes. This patch avoids the call
to makewalk when commands.diff isn't given a list of patterns, cutting
the time for hg diff (with no args) in half.
Index: mine/mercurial/hg.py
===================================================================
author | mason@suse.com |
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date | Fri, 12 Aug 2005 07:10:21 -0800 |
parents | 5f471a75d607 |
children |
rev | line source |
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141 | 1 #!/usr/bin/env python |
2 import sys, os | |
3 from mercurial import hg | |
4 | |
5 f = sys.argv[1] | |
6 | |
7 r1 = hg.revlog(open, f + ".i", f + ".d") | |
8 r2 = hg.revlog(open, f + ".i2", f + ".d2") | |
9 | |
10 tr = hg.transaction(open, "journal") | |
11 | |
12 for i in xrange(r1.count()): | |
13 n = r1.node(i) | |
14 p1, p2 = r1.parents(n) | |
15 l = r1.linkrev(n) | |
16 t = r1.revision(n) | |
17 n2 = r2.addrevision(t, tr, l, p1, p2) | |
18 tr.close() | |
19 | |
20 os.rename(f + ".i", f + ".i.old") | |
21 os.rename(f + ".d", f + ".d.old") | |
22 os.rename(f + ".i2", f + ".i") | |
23 os.rename(f + ".d2", f + ".d") |