Mercurial > hg
view tests/test-backout.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 | 6ef3107c661e |
children | 0763d829cbea |
line wrap: on
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$ hg init basic $ cd basic should complain $ hg backout abort: please specify a revision to backout [255] $ hg backout -r 0 0 abort: please specify just one revision [255] basic operation $ echo a > a $ hg commit -d '0 0' -A -m a adding a $ echo b >> a $ hg commit -d '1 0' -m b $ hg backout -d '2 0' tip --tool=true reverting a changeset 2:2929462c3dff backs out changeset 1:a820f4f40a57 $ cat a a file that was removed is recreated $ cd .. $ hg init remove $ cd remove $ echo content > a $ hg commit -d '0 0' -A -m a adding a $ hg rm a $ hg commit -d '1 0' -m b $ hg backout -d '2 0' tip --tool=true adding a changeset 2:de31bdc76c0d backs out changeset 1:76862dcce372 $ cat a content backout of backout is as if nothing happened $ hg backout -d '3 0' --merge tip --tool=true removing a changeset 3:7f6d0f120113 backs out changeset 2:de31bdc76c0d $ test -f a [1] across branch $ cd .. $ hg init branch $ cd branch $ echo a > a $ hg ci -Am0 adding a $ echo b > b $ hg ci -Am1 adding b $ hg co -C 0 0 files updated, 0 files merged, 1 files removed, 0 files unresolved should fail $ hg backout 1 abort: cannot backout change on a different branch [255] $ echo c > c $ hg ci -Am2 adding c created new head should fail $ hg backout 1 abort: cannot backout change on a different branch [255] backout with merge $ cd .. $ hg init merge $ cd merge $ echo line 1 > a $ echo line 2 >> a $ hg commit -d '0 0' -A -m a adding a remove line 1 $ echo line 2 > a $ hg commit -d '1 0' -m b $ echo line 3 >> a $ hg commit -d '2 0' -m c $ hg backout --merge -d '3 0' 1 --tool=true reverting a created new head changeset 3:26b8ccb9ad91 backs out changeset 1:5a50a024c182 merging with changeset 3:26b8ccb9ad91 merging a 0 files updated, 1 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg commit -d '4 0' -m d check line 1 is back $ cat a line 1 line 2 line 3 $ cd .. backout should not back out subsequent changesets $ hg init onecs $ cd onecs $ echo 1 > a $ hg commit -d '0 0' -A -m a adding a $ echo 2 >> a $ hg commit -d '1 0' -m b $ echo 1 > b $ hg commit -d '2 0' -A -m c adding b without --merge $ hg backout -d '3 0' 1 --tool=true reverting a 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg locate b b $ hg update -C tip 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg locate b b with --merge $ hg backout --merge -d '3 0' 1 --tool=true reverting a created new head changeset 3:3202beb76721 backs out changeset 1:22bca4c721e5 merging with changeset 3:3202beb76721 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg locate b b $ hg update -C tip 1 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg locate b [1] $ cd .. $ hg init m $ cd m $ echo a > a $ hg commit -d '0 0' -A -m a adding a $ echo b > b $ hg commit -d '1 0' -A -m b adding b $ echo c > c $ hg commit -d '2 0' -A -m b adding c $ hg update 1 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo d > d $ hg commit -d '3 0' -A -m c adding d created new head $ hg merge 2 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg commit -d '4 0' -A -m d backout of merge should fail $ hg backout 4 abort: cannot backout a merge changeset [255] backout of merge with bad parent should fail $ hg backout --parent 0 4 abort: cb9a9f314b8b is not a parent of b2f3bb92043e [255] backout of non-merge with parent should fail $ hg backout --parent 0 3 abort: cannot use --parent on non-merge changeset [255] backout with valid parent should be ok $ hg backout -d '5 0' --parent 2 4 --tool=true removing d changeset 5:10e5328c8435 backs out changeset 4:b2f3bb92043e $ hg rollback repository tip rolled back to revision 4 (undo commit) working directory now based on revision 4 $ hg update -C 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg backout -d '6 0' --parent 3 4 --tool=true removing c changeset 5:033590168430 backs out changeset 4:b2f3bb92043e $ cd .. named branches $ hg init named_branches $ cd named_branches $ echo default > default $ hg ci -d '0 0' -Am default adding default $ hg branch branch1 marked working directory as branch branch1 (branches are permanent and global, did you want a bookmark?) $ echo branch1 > file1 $ hg ci -d '1 0' -Am file1 adding file1 $ hg branch branch2 marked working directory as branch branch2 (branches are permanent and global, did you want a bookmark?) $ echo branch2 > file2 $ hg ci -d '2 0' -Am file2 adding file2 without --merge $ hg backout -r 1 --tool=true removing file1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg branch branch2 $ hg status -A R file1 C default C file2 with --merge $ hg update -qC $ hg backout --merge -d '3 0' -r 1 -m 'backout on branch1' --tool=true removing file1 created new head changeset 3:d4e8f6db59fb backs out changeset 1:bf1602f437f3 merging with changeset 3:d4e8f6db59fb 0 files updated, 0 files merged, 1 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg update -q -C 2 on branch2 with branch1 not merged, so file1 should still exist: $ hg id 45bbcd363bf0 (branch2) $ hg st -A C default C file1 C file2 on branch2 with branch1 merged, so file1 should be gone: $ hg merge 0 files updated, 0 files merged, 1 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg ci -d '4 0' -m 'merge backout of branch1' $ hg id 22149cdde76d (branch2) tip $ hg st -A C default C file2 on branch1, so no file1 and file2: $ hg co -C branch1 1 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg id bf1602f437f3 (branch1) $ hg st -A C default C file1 $ cd ..