[Bug 4680] New: regression in hg graft performance since 3.3
mercurial-bugs at selenic.com
mercurial-bugs at selenic.com
Wed May 20 11:40:59 UTC 2015
http://bz.selenic.com/show_bug.cgi?id=4680
Priority: normal
Bug ID: 4680
CC: mercurial-devel at selenic.com
Assignee: bugzilla at selenic.com
Summary: regression in hg graft performance since 3.3
Severity: bug
Classification: Unclassified
OS: Windows
Reporter: schnurrz at hotmail.com
Hardware: PC
Status: UNCONFIRMED
Version: 3.4
Component: Mercurial
Product: Mercurial
Since version 3.3 grafting a single changesets takes between 10 to 30 seconds.
(Prior to 3.3 it took about 1-2 seconds). As far as I know everyone in our
company running the newest version is affected. Our repository consists of 2
branches with about 50000 changesets.
Update to 3.4 (with Bug 4537 fixed) didn't fix our problem.
profile and traceback:
>hg graft --profile --traceback --currentdate --currentuser --repository "D:\Java\FEP_stable" 51109
grafting 51109:10c34dacf052 "SLA: Produktliste"
CallCount Recursive Total(s) Inline(s) module:lineno(function)
531419 0 7.5693 7.5693 <zlib.decompress>
269550 0 19.5174 1.7578
<mercurial\changelog.pyo>:306(read)
269550 0 11.8952 1.5489
<mercurial\revlog.pyo>:1035(revision)
269543 0 1.3790 0.7095
<mercurial\changelog.pyo>:28(decodeextra)
539098 0 3.7045 0.6319
<mercurial\encoding.pyo>:83(tolocal)
539098 0 0.3750 0.3750 <method 'split' of
'str' objects>
269549 0 0.2024 0.2024 <binascii.unhexlify>
270029 0 17.0982 1.5875
<mercurial\revlog.pyo>:1035(revision)
270026 0 11.3346 1.1786
<mercurial\revlog.pyo>:976(_chunks)
270026 0 0.4392 0.4392
<mercurial.mpatch.patches>
270026 0 2.9810 0.2717
<mercurial\revlog.pyo>:1109(_checkhash)
269550 0 0.2844 0.2117
<mercurial\changelog.pyo>:208(node)
269549 0 0.3417 0.2020
<mercurial\changelog.pyo>:226(flags)
270026 0 11.3346 1.1786
<mercurial\revlog.pyo>:976(_chunks)
534866 0 0.3965 0.3965
<mercurial\revlog.pyo>:349(start)
534866 0 7.9248 0.3625
<mercurial\revlog.pyo>:81(decompress)
271861 0 1.6545 0.3206
<mercurial\revlog.pyo>:964(_chunkraw)
534866 0 0.1131 0.1131
<mercurial\revlog.pyo>:353(length)
534866 0 0.0671 0.0671 <method 'append' of
'list' objects>
1610765 0 2.4189 1.1771 <method 'decode' of 'str'
objects>
539245 0 0.6787 0.2305
<encodings\utf_8.pyo>:15(decode)
539391 0 0.5628 0.1960
<encodings\cp1252.pyo>:14(decode)
2 0 0.0002 0.0000
<encodings\__init__.pyo>:71(search_function)
540120 0 1.0638 1.0638 <method 'update' of
'_hashlib.HASH' objects>
1079402 0 0.7610 0.7610
<mercurial\revlog.pyo>:349(start)
269543 0 1.3790 0.7095
<mercurial\changelog.pyo>:28(decodeextra)
532112 0 0.3572 0.3570 <method 'decode' of
'str' objects>
801655 0 0.2434 0.2434 <method 'split' of
'str' objects>
269543 0 0.0662 0.0662 <method 'copy' of
'dict' objects>
6723 0 0.0027 0.0027 <method 'replace' of
'str' objects>
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