Comments (8)
vaab
commented on May 30, 2024
Hi, thanks for your report. I see that you've used gitchangelog thoroughly and are using incremental generation. I get few feedback, and your report is coming at a right time : I have a new experimental version of gitchangelog that needed some extensive performance/functionality testing.
Performance is important for me, and it really seems that there is room for improvements on this topic.
On hesperides project, you are using incremental changelog and when running gitchangelog with a fresh checkout (on commit aaac5e6), I get 2s run, and the expected file gets changed as I feel it should. I'm using gitchangelog 3.0.4.
I guess that you wanted a full changelog generation ? Can you tell me more how to reproduce your huge times at running gitchangelog. The best would be a small bash script.
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vaab
commented on May 30, 2024
Please note, that cloning both of your git repositories and changing the provided .gitchangelog.rc by resetting your output to stdout, and commenting out rev to display all commits, running gitchangelog will display the full templated changelog on stdout in about 3s on my computer.
I can confirm this on both python 2.7.8 and python 3.7.1. Note that I'm running python on linux on a 2014 laptop computer.
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Lucas-C
commented on May 30, 2024
I am using gitchangelog 3.0.4 under Cygwin with Python 3.7.4 and git 2.21.0 (both installed through Cygwin)
I played a little bit with the code, and it seems that GitRepos.log takes in average 0.2s to executes on my machine. And the 20 first lines of versions_data_iter take 10s to execute.
I wonder if maybe the issue is that gitchangelog starts a lot of shell processes, which may be time-expensive on my system
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vaab
commented on May 30, 2024
Running a Windows 7 VM under Virtualbox, on hesperides clone, output redirected to stdout and all revisions selected, gitchangelog under Cygwin_NT-6.1 is taking 15s... which is already way to much but still orders of magnitude faster than your install (you mentionned 3mn) taking into account that it is a windows VM with 1cpu and 768M of RAM.
Have you gone down the tracks along abnormal cygwin performance ?
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Lucas-C
commented on May 30, 2024
Probably :(
Another test I just made, using cProfile:
# python3 -m cProfile /home/lucas_cimon/.local/lib/python3.7/site-packages/gitchangelog/gitchangelog.py
448106 function calls (445026 primitive calls) in 54.619 seconds
Ordered by: standard name
ncalls tottime percall cumtime percall filename:lineno(function)
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181 0.000 0.000 0.000 0.000 {built-in method _imp.release_lock}
6 0.000 0.000 0.000 0.000 {built-in method _locale.nl_langinfo}
3 0.000 0.000 0.000 0.000 {built-in method _locale.setlocale}
634 19.408 0.031 19.408 0.031 {built-in method _posixsubprocess.fork_exec}
24 0.000 0.000 0.000 0.000 {built-in method _sre.compile}
16 0.000 0.000 0.000 0.000 {built-in method _stat.S_ISLNK}
3 0.000 0.000 0.000 0.000 {built-in method _stat.S_ISREG}
1 0.000 0.000 0.000 0.000 {built-in method _thread._set_sentinel}
707 0.005 0.000 0.005 0.000 {built-in method _thread.allocate_lock}
83 0.000 0.000 0.000 0.000 {built-in method _thread.get_ident}
1638 0.001 0.000 0.001 0.000 {built-in method _warnings._filters_mutated}
88 0.001 0.000 0.001 0.000 {built-in method _warnings.warn}
95/93 0.002 0.000 0.002 0.000 {built-in method builtins.__build_class__}
1 0.000 0.000 0.026 0.026 {built-in method builtins.__import__}
72 0.000 0.000 0.000 0.000 {built-in method builtins.abs}
179 0.000 0.000 0.001 0.000 {built-in method builtins.any}
479 0.000 0.000 0.000 0.000 {built-in method builtins.callable}
253 0.000 0.000 0.000 0.000 {built-in method builtins.chr}
2 0.000 0.000 0.000 0.000 {built-in method builtins.compile}
45 0.000 0.000 0.000 0.000 {built-in method builtins.divmod}
35/1 0.000 0.000 54.620 54.620 {built-in method builtins.exec}
3020/2865 0.005 0.000 0.211 0.000 {built-in method builtins.getattr}
6 0.000 0.000 0.000 0.000 {built-in method builtins.globals}
496 0.001 0.000 0.001 0.000 {built-in method builtins.hasattr}
88 0.000 0.000 0.000 0.000 {built-in method builtins.hash}
59442 0.027 0.000 0.027 0.000 {built-in method builtins.isinstance}
18 0.000 0.000 0.000 0.000 {built-in method builtins.issubclass}
151 0.000 0.000 0.000 0.000 {built-in method builtins.iter}
4583/4438 0.003 0.000 0.003 0.000 {built-in method builtins.len}
8 0.000 0.000 0.000 0.000 {built-in method builtins.locals}
27 0.000 0.000 0.000 0.000 {built-in method builtins.max}
412 0.001 0.000 7.858 0.019 {built-in method builtins.min}
2420/2129 0.003 0.000 18.157 0.009 {built-in method builtins.next}
211 0.000 0.000 0.000 0.000 {built-in method builtins.ord}
2 0.000 0.000 0.000 0.000 {built-in method builtins.repr}
9 0.000 0.000 0.000 0.000 {built-in method builtins.round}
3603 0.003 0.000 0.003 0.000 {built-in method builtins.setattr}
778/691 0.003 0.000 6.616 0.010 {built-in method builtins.sorted}
2 0.000 0.000 0.000 0.000 {built-in method builtins.vars}
90 0.000 0.000 0.000 0.000 {built-in method from_bytes}
1907 0.075 0.000 0.075 0.000 {built-in method io.open}
30 0.004 0.000 0.004 0.000 {built-in method marshal.loads}
633 0.000 0.000 0.000 0.000 {built-in method posix.WEXITSTATUS}
633 0.000 0.000 0.000 0.000 {built-in method posix.WIFEXITED}
633 0.001 0.000 0.001 0.000 {built-in method posix.WIFSIGNALED}
1093 0.197 0.000 0.197 0.000 {built-in method posix.chdir}
3170 0.036 0.000 0.036 0.000 {built-in method posix.close}
44010 0.015 0.000 0.015 0.000 {built-in method posix.fspath}
549 0.004 0.000 0.004 0.000 {built-in method posix.getcwd}
4 0.001 0.000 0.001 0.000 {built-in method posix.listdir}
16 0.001 0.000 0.001 0.000 {built-in method posix.lstat}
2536 0.203 0.000 0.203 0.000 {built-in method posix.pipe}
2093 14.294 0.007 14.294 0.007 {built-in method posix.read}
1 0.000 0.000 0.000 0.000 {built-in method posix.register_at_fork}
178 0.013 0.000 0.013 0.000 {built-in method posix.stat}
741 0.204 0.000 0.204 0.000 {built-in method posix.waitpid}
546 0.001 0.000 0.001 0.000 {built-in method select.poll}
2 0.000 0.000 0.000 0.000 {built-in method sys._getframe}
353 0.001 0.000 0.001 0.000 {built-in method sys.exc_info}
2 0.000 0.000 0.000 0.000 {built-in method sys.getdefaultencoding}
2 0.000 0.000 0.000 0.000 {built-in method sys.intern}
266 0.001 0.000 0.001 0.000 {built-in method time.perf_counter}
176 0.001 0.000 0.001 0.000 {built-in method utcfromtimestamp}
5 0.000 0.000 0.000 0.000 {function Config.__getitem__ at 0x6ffff843200}
11 0.000 0.000 0.000 0.000 {method '__contains__' of 'frozenset' objects}
1 0.000 0.000 0.000 0.000 {method '__enter__' of '_thread.lock' objects}
1 0.000 0.000 0.000 0.000 {method '__exit__' of '_thread.lock' objects}
197 0.001 0.000 0.001 0.000 {method 'acquire' of '_thread.lock' objects}
818 0.001 0.000 0.001 0.000 {method 'add' of 'set' objects}
15015 0.006 0.000 0.006 0.000 {method 'append' of 'list' objects}
546 0.001 0.000 0.001 0.000 {method 'clear' of 'dict' objects}
1268 0.066 0.000 0.066 0.000 {method 'close' of '_io.BufferedReader' objects}
634 0.023 0.000 0.023 0.000 {method 'close' of '_io.BufferedWriter' objects}
1 0.000 0.000 0.000 0.000 {method 'copy' of 'dict' objects}
546 0.001 0.000 0.001 0.000 {method 'count' of 'list' objects}
3233 0.006 0.000 0.006 0.000 {method 'decode' of 'bytes' objects}
1 0.000 0.000 0.000 0.000 {method 'disable' of '_lsprof.Profiler' objects}
26674 0.018 0.000 0.018 0.000 {method 'encode' of 'str' objects}
14 0.000 0.000 0.000 0.000 {method 'end' of 're.Match' objects}
21294 0.011 0.000 0.011 0.000 {method 'endswith' of 'bytes' objects}
276 0.000 0.000 0.000 0.000 {method 'endswith' of 'str' objects}
234 0.000 0.000 0.000 0.000 {method 'extend' of 'list' objects}
2184 0.004 0.000 0.004 0.000 {method 'fileno' of '_io.BufferedReader' objects}
178 0.000 0.000 0.000 0.000 {method 'find' of 'bytearray' objects}
18 0.000 0.000 0.000 0.000 {method 'find' of 'str' objects}
546 0.004 0.000 0.004 0.000 {method 'flush' of '_io.BufferedWriter' objects}
2 0.000 0.000 0.000 0.000 {method 'format' of 'str' objects}
573 0.000 0.000 0.000 0.000 {method 'get' of 'dict' objects}
52 0.000 0.000 0.000 0.000 {method 'get' of 'mappingproxy' objects}
218 0.000 0.000 0.000 0.000 {method 'group' of 're.Match' objects}
14 0.000 0.000 0.000 0.000 {method 'groupdict' of 're.Match' objects}
1 0.000 0.000 0.000 0.000 {method 'groups' of 're.Match' objects}
3 0.000 0.000 0.000 0.000 {method 'index' of 'str' objects}
548 0.001 0.000 0.001 0.000 {method 'insert' of 'list' objects}
158 0.000 0.000 0.000 0.000 {method 'isalnum' of 'str' objects}
22 0.000 0.000 0.000 0.000 {method 'isidentifier' of 'str' objects}
73 0.000 0.000 0.000 0.000 {method 'isupper' of 'str' objects}
38 0.000 0.000 0.000 0.000 {method 'items' of 'collections.OrderedDict' objects}
360 0.000 0.000 0.000 0.000 {method 'items' of 'dict' objects}
10 0.000 0.000 0.000 0.000 {method 'items' of 'mappingproxy' objects}
1092 0.001 0.000 0.001 0.000 {method 'join' of 'bytes' objects}
2413 0.003 0.000 0.004 0.000 {method 'join' of 'str' objects}
470 0.000 0.000 0.000 0.000 {method 'keys' of 'dict' objects}
41 0.000 0.000 0.000 0.000 {method 'lower' of 'str' objects}
2 0.000 0.000 0.000 0.000 {method 'lstrip' of 'str' objects}
94 0.000 0.000 0.000 0.000 {method 'match' of 're.Pattern' objects}
2 0.000 0.000 0.000 0.000 {method 'mro' of 'type' objects}
16 0.000 0.000 0.000 0.000 {method 'partition' of 'str' objects}
970 17.809 0.018 17.809 0.018 {method 'poll' of 'select.poll' objects}
1103 0.001 0.000 0.001 0.000 {method 'pop' of 'dict' objects}
226 0.000 0.000 0.000 0.000 {method 'pop' of 'list' objects}
157 1.156 0.007 1.156 0.007 {method 'read' of '_io.BufferedReader' objects}
30 0.002 0.000 0.002 0.000 {method 'read' of '_io.FileIO' objects}
4 0.000 0.000 0.000 0.000 {method 'read' of '_io.TextIOWrapper' objects}
1092 0.001 0.000 0.001 0.000 {method 'register' of 'select.poll' objects}
195 0.001 0.000 0.001 0.000 {method 'release' of '_thread.lock' objects}
612 0.002 0.000 0.002 0.000 {method 'remove' of 'list' objects}
742 0.002 0.000 0.002 0.000 {method 'replace' of 'str' objects}
6 0.000 0.000 0.000 0.000 {method 'reverse' of 'list' objects}
634 0.001 0.000 0.001 0.000 {method 'rfind' of 'bytes' objects}
3 0.000 0.000 0.000 0.000 {method 'rfind' of 'str' objects}
287 0.000 0.000 0.000 0.000 {method 'rpartition' of 'str' objects}
88 0.000 0.000 0.000 0.000 {method 'rstrip' of 'bytes' objects}
2102 0.001 0.000 0.001 0.000 {method 'rstrip' of 'str' objects}
1049 0.004 0.000 0.004 0.000 {method 'search' of 're.Pattern' objects}
42 0.000 0.000 0.000 0.000 {method 'setdefault' of 'dict' objects}
5 0.000 0.000 0.000 0.000 {method 'setter' of 'property' objects}
2 0.000 0.000 0.000 0.000 {method 'sort' of 'list' objects}
69 0.001 0.000 0.001 0.000 {method 'split' of 'bytes' objects}
1784 0.009 0.000 0.009 0.000 {method 'split' of 'str' objects}
1 0.000 0.000 0.000 0.000 {method 'splitlines' of 'str' objects}
14 0.000 0.000 0.000 0.000 {method 'start' of 're.Match' objects}
21294 0.012 0.000 0.012 0.000 {method 'startswith' of 'bytes' objects}
287 0.000 0.000 0.000 0.000 {method 'startswith' of 'str' objects}
176 0.005 0.000 0.005 0.000 {method 'strftime' of 'datetime.date' objects}
2569 0.001 0.000 0.001 0.000 {method 'strip' of 'str' objects}
431 0.005 0.000 0.047 0.000 {method 'sub' of 're.Pattern' objects}
353 0.001 0.000 0.087 0.000 {method 'throw' of 'generator' objects}
10 0.000 0.000 0.000 0.000 {method 'translate' of 'bytearray' objects}
2 0.000 0.000 0.000 0.000 {method 'translate' of 'str' objects}
1092 0.002 0.000 0.002 0.000 {method 'unregister' of 'select.poll' objects}
12 0.000 0.000 0.000 0.000 {method 'update' of 'dict' objects}
180 0.000 0.000 0.000 0.000 {method 'upper' of 'str' objects}
2 0.000 0.000 0.000 0.000 {method 'values' of 'dict' objects}
4004 0.012 0.000 0.012 0.000 {method 'write' of '_io.BufferedWriter' objects}
1 0.000 0.000 0.000 0.000 {method 'write' of '_io.TextIOWrapper' objects}from gitchangelog.
Lucas-C
commented on May 30, 2024
54s spent in built-in method builtins.exec means the performance issue appears when invoking sub-processes.
Unless you see a way to reduce the number of those calls, I do not think there is much that can be done in my case.
from gitchangelog.
vaab
commented on May 30, 2024
Well, you still didn't tell me what setup of gitchangelog you used in your call (with reproduceability in mind: which repository, on which commit, and if you do some .gitchangelog.rc tinkering.) It would be nice to know also your exact platform (windows 10 ? rev ?), your cygwin version. Your computer basic specs (RAM, cpu, model or age), so I'm not sure how I can compare my 15s with your timings. If my timings are much better than yours, you might want to check things listed here: https://superuser.com/questions/877051/cygwin-from-windows-is-very-slow-laggy for a start.
If you already know how to use docker in any way, you could also launch gitchangelog through a docker. It could really speed things up whatever is your docker implementation (in virtualbox, WSL or WSL2).
I still need to know if gitchangelog is slow in cygwin in general, or slow only on your setup. I could let this issue open in the former case, as I'm interested to give a nice experience to all users.
from gitchangelog.
Lucas-C
commented on May 30, 2024
Sure, if you want more info:
- I use a Windows 10 64bits with 16GB of RAM, with Cygwin 3.0.7(0.338/5/3)
- I tested
gitchangelogwith a fresh clone of https://github.com/voyages-sncf-technologies/hesperides, but I know have an execution time of 41s... I think there is too much variation on my development environment to be reliable for evaluating precisely the performance bottlenecks ofgitchangelog
I know Docker well, I'll try to launch gitchangelog through it whenever I have some more time
from gitchangelog.
Related Issues (20)
- [WinError 2] The system cannot find the file specified HOT 3
- ignore_regexps doesnt match against whole message, only subject
- regexp filter skipping matches
- Added an AUR package.
- Update Readme to include basic full example. HOT 2
- Exception with FileInsertIntoFirstRegexMatch HOT 2
- pystache missing as dependency? HOT 2
- UnicodeEncodeError character maps to undefined HOT 7
- Support for pre-commit
- How to show changelog since certain commit? HOT 1
- Use branch name for section categorisation HOT 1
- test failures caused by 3.0.4 package missing test/__init__.py
- Is this project still maintained ? HOT 2
- Enhancement Request: Multi-package repo support HOT 1
- Request: drop d2to1
- Offering to help with the project HOT 6
- Branch tags are erroneously included into change log
- Changelog usage?
- Incorrect gitchangelog format
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