Mercurial > hg
view tests/test-convert-cvsnt-mergepoints.t @ 20182:04036798ebed
branches: avoid unnecessary changectx.branch() calls
This requires reading from the changelog, which can be costly over NFS.
Note that this does not totally remove reading from the changelog; we
still do that when calling changectx.closesbranch(). That call will be
removed in a later patch.
Running hg branches on the PyPy repo (with 996) over a busy NFS server,
before this change:
$ time hg --profile branches > /dev/null
CallCount Recursive Total(s) Inline(s) module:lineno(function)
2042 0 2.2827 2.2827 <open>
2036 0 0.9840 0.9840 <method 'close' of 'file' objects>
2036 0 0.0464 0.0464 <method 'read' of 'file' objects>
5233 0 0.1985 0.0453 mercurial.repoview:161(changelog)
10462 0 0.0791 0.0314 mercurial.changelog:133(tip)
5233 0 0.0388 0.0176 mercurial.localrepo:26(__get__)
10462 0 0.0250 0.0126 <len>
5233 0 0.0059 0.0039 mercurial.repoview:112(filterrevs)
10462 0 0.0029 0.0029 <hash>
2034 0 0.0444 0.0444 <method 'seek' of 'file' objects>
5340 0 0.0390 0.0390 mercurial.revlog:296(rev)
2582 0 0.0371 0.0371 <zlib.decompress>
3155 0 0.1963 0.0366 mercurial.context:202(__init__)
3155 0 0.1238 0.0306 mercurial.repoview:161(changelog)
3155 0 0.0261 0.0080 mercurial.changelog:183(rev)
9465 0 0.0061 0.0061 <isinstance>
1096 0 0.0023 0.0023 <binascii.unhexlify>
4251 0 0.0014 0.0014 <len>
2059 0 3.7341 0.0332 mercurial.changelog:270(read)
2059 0 3.6304 0.0307 mercurial.revlog:907(revision)
2057 0 0.0262 0.0137 mercurial.changelog:28(decodeextra)
4118 0 0.0094 0.0094 <method 'split' of 'str' objects>
4118 0 0.0270 0.0048 mercurial.encoding:61(tolocal)
2059 0 0.0040 0.0040 <method 'index' of 'str' objects>
10462 0 0.0791 0.0314 mercurial.changelog:133(tip)
10462 0 0.0289 0.0207 mercurial.changelog:190(node)
10462 0 0.0188 0.0091 <len>
52433 20932 0.0478 0.0310 <len>
20932 0 0.0221 0.0168 mercurial.revlog:262(__len__)
2059 0 3.6304 0.0307 mercurial.revlog:907(revision)
real 0m4.361s
user 0m0.986s
sys 0m0.237s
After this change:
$ time hg --profile branches > /dev/null
CallCount Recursive Total(s) Inline(s) module:lineno(function)
1069 0 1.1098 1.1098 <open>
1063 0 0.4865 0.4865 <method 'close' of 'file' objects>
4122 0 0.1811 0.0404 mercurial.repoview:161(changelog)
8240 0 0.0712 0.0272 mercurial.changelog:133(tip)
4122 0 0.0378 0.0177 mercurial.localrepo:26(__get__)
8240 0 0.0221 0.0115 <len>
4122 0 0.0057 0.0033 mercurial.repoview:112(filterrevs)
8240 0 0.0025 0.0025 <hash>
3029 0 0.1979 0.0371 mercurial.context:202(__init__)
3029 0 0.1278 0.0310 mercurial.repoview:161(changelog)
3029 0 0.0230 0.0081 mercurial.changelog:183(rev)
9087 0 0.0061 0.0061 <isinstance>
1096 0 0.0026 0.0026 <binascii.unhexlify>
4125 0 0.0014 0.0014 <len>
4229 0 0.0337 0.0337 mercurial.revlog:296(rev)
1061 0 0.0296 0.0296 <method 'seek' of 'file' objects>
1063 0 0.0292 0.0292 <method 'read' of 'file' objects>
8240 0 0.0712 0.0272 mercurial.changelog:133(tip)
8240 0 0.0271 0.0196 mercurial.changelog:190(node)
8240 0 0.0169 0.0083 <len>
40476 16488 0.0422 0.0271 <len>
16488 0 0.0193 0.0152 mercurial.revlog:262(__len__)
1342 0 0.0241 0.0241 <zlib.decompress>
9445 0 0.0336 0.0224 mercurial.changelog:190(node)
9445 0 0.0112 0.0112 mercurial.revlog:317(node)
1074 0 1.9102 0.0224 mercurial.changelog:270(read)
1074 0 1.8397 0.0202 mercurial.revlog:907(revision)
1073 0 0.0187 0.0099 mercurial.changelog:28(decodeextra)
2148 0 0.0061 0.0061 <method 'split' of 'str' objects>
2148 0 0.0184 0.0034 mercurial.encoding:61(tolocal)
real 0m2.402s
user 0m0.735s
sys 0m0.177s
author | Brodie Rao <brodie@sf.io> |
---|---|
date | Fri, 15 Nov 2013 23:18:08 -0500 |
parents | aa9385f983fa |
children | 7a9cbb315d84 |
line wrap: on
line source
$ "$TESTDIR/hghave" cvs || exit 80 $ filterpath() > { > eval "$@" | sed "s:$CVSROOT:*REPO*:g" > } $ cvscall() > { > cvs -f "$@" > } output of 'cvs ci' varies unpredictably, so discard most of it -- just keep the part that matters $ cvsci() > { > cvs -f ci -f "$@" > /dev/null > } $ hgcat() > { > hg --cwd src-hg cat -r tip "$1" > } $ echo "[extensions]" >> $HGRCPATH $ echo "convert = " >> $HGRCPATH create cvs repository $ mkdir cvsmaster $ cd cvsmaster $ CVSROOT=`pwd` $ export CVSROOT $ CVS_OPTIONS=-f $ export CVS_OPTIONS $ cd .. $ filterpath cvscall -Q -d "$CVSROOT" init checkout #1: add foo.txt $ cvscall -Q checkout -d cvsworktmp . $ cd cvsworktmp $ mkdir foo $ cvscall -Q add foo $ cd foo $ echo foo > foo.txt $ cvscall -Q add foo.txt $ cvsci -m "add foo.txt" foo.txt $ cd ../.. $ rm -rf cvsworktmp checkout #2: create MYBRANCH1 and modify foo.txt on it $ cvscall -Q checkout -d cvswork foo $ cd cvswork $ cvscall -q rtag -b -R MYBRANCH1 foo $ cvscall -Q update -P -r MYBRANCH1 $ echo bar > foo.txt $ cvsci -m "bar" foo.txt $ echo baz > foo.txt $ cvsci -m "baz" foo.txt create MYBRANCH1_2 and modify foo.txt some more $ cvscall -q rtag -b -R -r MYBRANCH1 MYBRANCH1_2 foo $ cvscall -Q update -P -r MYBRANCH1_2 $ echo bazzie > foo.txt $ cvsci -m "bazzie" foo.txt create MYBRANCH1_1 and modify foo.txt yet again $ cvscall -q rtag -b -R MYBRANCH1_1 foo $ cvscall -Q update -P -r MYBRANCH1_1 $ echo quux > foo.txt $ cvsci -m "quux" foo.txt merge MYBRANCH1 to MYBRANCH1_1 $ filterpath cvscall -Q update -P -jMYBRANCH1 rcsmerge: warning: conflicts during merge RCS file: *REPO*/foo/foo.txt,v retrieving revision 1.1 retrieving revision 1.1.2.2 Merging differences between 1.1 and 1.1.2.2 into foo.txt carefully placed sleep to dodge cvs bug (optimization?) where it sometimes ignores a "commit" command if it comes too fast (the -f option in cvsci seems to work for all the other commits in this script) $ sleep 1 $ echo xyzzy > foo.txt $ cvsci -m "merge1+clobber" foo.txt #if unix-permissions return to trunk and merge MYBRANCH1_2 $ cvscall -Q update -P -A $ filterpath cvscall -Q update -P -jMYBRANCH1_2 RCS file: *REPO*/foo/foo.txt,v retrieving revision 1.1 retrieving revision 1.1.2.2.2.1 Merging differences between 1.1 and 1.1.2.2.2.1 into foo.txt $ cvsci -m "merge2" foo.txt $ REALCVS=`which cvs` $ echo "for x in \$*; do if [ \"\$x\" = \"rlog\" ]; then echo \"RCS file: $CVSROOT/foo/foo.txt,v\"; cat \"$TESTDIR/test-convert-cvsnt-mergepoints.rlog\"; exit 0; fi; done; $REALCVS \$*" > ../cvs $ chmod +x ../cvs $ PATH=..:${PATH} hg debugcvsps --parents foo collecting CVS rlog 7 log entries creating changesets 7 changeset entries --------------------- PatchSet 1 Date: * (glob) Author: user Branch: HEAD Tag: (none) Branchpoints: MYBRANCH1, MYBRANCH1_1 Log: foo.txt Members: foo.txt:INITIAL->1.1 --------------------- PatchSet 2 Date: * (glob) Author: user Branch: MYBRANCH1 Tag: (none) Parent: 1 Log: bar Members: foo.txt:1.1->1.1.2.1 --------------------- PatchSet 3 Date: * (glob) Author: user Branch: MYBRANCH1 Tag: (none) Branchpoints: MYBRANCH1_2 Parent: 2 Log: baz Members: foo.txt:1.1.2.1->1.1.2.2 --------------------- PatchSet 4 Date: * (glob) Author: user Branch: MYBRANCH1_1 Tag: (none) Parent: 1 Log: quux Members: foo.txt:1.1->1.1.4.1 --------------------- PatchSet 5 Date: * (glob) Author: user Branch: MYBRANCH1_2 Tag: (none) Parent: 3 Log: bazzie Members: foo.txt:1.1.2.2->1.1.2.2.2.1 --------------------- PatchSet 6 Date: * (glob) Author: user Branch: HEAD Tag: (none) Parents: 1,5 Log: merge Members: foo.txt:1.1->1.2 --------------------- PatchSet 7 Date: * (glob) Author: user Branch: MYBRANCH1_1 Tag: (none) Parents: 4,3 Log: merge Members: foo.txt:1.1.4.1->1.1.4.2 #endif $ cd ..