Mercurial > hg
view tests/test-extension-timing.t @ 44363:f7459da77f23
nodemap: introduce an option to use mmap to read the nodemap mapping
The performance and memory benefit is much greater if we don't have to copy all
the data in memory for each information. So we introduce an option (on by
default) to read the data using mmap.
This changeset is the last one definition the API for index support nodemap
data. (they have to be able to use the mmaping).
Below are some benchmark comparing the best we currently have in 5.3 with the
final step of this series (using the persistent nodemap implementation in
Rust). The benchmark run `hg perfindex` with various revset and the following
variants:
Before:
* do not use the persistent nodemap
* use the CPython implementation of the index for nodemap
* use mmapping of the changelog index
After:
* use the MixedIndex Rust code, with the NodeTree object for nodemap access
(still in review)
* use the persistent nodemap data from disk
* access the persistent nodemap data through mmap
* use mmapping of the changelog index
The persistent nodemap greatly speed up most operation on very large
repositories. Some of the previously very fast lookup end up a bit slower because
the persistent nodemap has to be setup. However the absolute slowdown is very
small and won't matters in the big picture.
Here are some numbers (in seconds) for the reference copy of mozilla-try:
Revset Before After abs-change speedup
-10000: 0.004622 0.005532 0.000910 × 0.83
-10: 0.000050 0.000132 0.000082 × 0.37
tip 0.000052 0.000085 0.000033 × 0.61
0 + (-10000:) 0.028222 0.005337 -0.022885 × 5.29
0 0.023521 0.000084 -0.023437 × 280.01
(-10000:) + 0 0.235539 0.005308 -0.230231 × 44.37
(-10:) + :9 0.232883 0.000180 -0.232703 ×1293.79
(-10000:) + (:99) 0.238735 0.005358 -0.233377 × 44.55
:99 + (-10000:) 0.317942 0.005593 -0.312349 × 56.84
:9 + (-10:) 0.313372 0.000179 -0.313193 ×1750.68
:9 0.316450 0.000143 -0.316307 ×2212.93
On smaller repositories, the cost of nodemap related operation is not as big, so
the win is much more modest. Yet it helps shaving a handful of millisecond here
and there.
Here are some numbers (in seconds) for the reference copy of mercurial:
Revset Before After abs-change speedup
-10: 0.000065 0.000097 0.000032 × 0.67
tip 0.000063 0.000078 0.000015 × 0.80
0 0.000561 0.000079 -0.000482 × 7.10
-10000: 0.004609 0.003648 -0.000961 × 1.26
0 + (-10000:) 0.005023 0.003715 -0.001307 × 1.35
(-10:) + :9 0.002187 0.000108 -0.002079 ×20.25
(-10000:) + 0 0.006252 0.003716 -0.002536 × 1.68
(-10000:) + (:99) 0.006367 0.003707 -0.002660 × 1.71
:9 + (-10:) 0.003846 0.000110 -0.003736 ×34.96
:9 0.003854 0.000099 -0.003755 ×38.92
:99 + (-10000:) 0.007644 0.003778 -0.003866 × 2.02
Differential Revision: https://phab.mercurial-scm.org/D7894
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Tue, 11 Feb 2020 11:18:52 +0100 |
parents | 6f2510b581a0 |
children | 8cab8db59b6c |
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Test basic extension support $ cat > foobar.py <<EOF > import os > from mercurial import commands, registrar > cmdtable = {} > command = registrar.command(cmdtable) > configtable = {} > configitem = registrar.configitem(configtable) > configitem(b'tests', b'foo', default=b"Foo") > def uisetup(ui): > ui.debug(b"uisetup called [debug]\\n") > ui.write(b"uisetup called\\n") > ui.status(b"uisetup called [status]\\n") > ui.flush() > def reposetup(ui, repo): > ui.write(b"reposetup called for %s\\n" % os.path.basename(repo.root)) > ui.write(b"ui %s= repo.ui\\n" % (ui == repo.ui and b"=" or b"!")) > ui.flush() > @command(b'foo', [], b'hg foo') > def foo(ui, *args, **kwargs): > foo = ui.config(b'tests', b'foo') > ui.write(foo) > ui.write(b"\\n") > @command(b'bar', [], b'hg bar', norepo=True) > def bar(ui, *args, **kwargs): > ui.write(b"Bar\\n") > EOF $ abspath=`pwd`/foobar.py $ mkdir barfoo $ cp foobar.py barfoo/__init__.py $ barfoopath=`pwd`/barfoo $ hg init a $ cd a $ echo foo > file $ hg add file $ hg commit -m 'add file' $ echo '[extensions]' >> $HGRCPATH $ echo "foobar = $abspath" >> $HGRCPATH $ filterlog () { > sed -e 's!^[0-9/]* [0-9:]* ([0-9]*)>!YYYY/MM/DD HH:MM:SS (PID)>!' > } Test extension setup timings $ hg foo --traceback --config devel.debug.extensions=yes --debug 2>&1 | filterlog YYYY/MM/DD HH:MM:SS (PID)> loading extensions YYYY/MM/DD HH:MM:SS (PID)> - processing 1 entries YYYY/MM/DD HH:MM:SS (PID)> - loading extension: foobar YYYY/MM/DD HH:MM:SS (PID)> > foobar extension loaded in * (glob) YYYY/MM/DD HH:MM:SS (PID)> - validating extension tables: foobar YYYY/MM/DD HH:MM:SS (PID)> - invoking registered callbacks: foobar YYYY/MM/DD HH:MM:SS (PID)> > callbacks completed in * (glob) YYYY/MM/DD HH:MM:SS (PID)> > loaded 1 extensions, total time * (glob) YYYY/MM/DD HH:MM:SS (PID)> - loading configtable attributes YYYY/MM/DD HH:MM:SS (PID)> - executing uisetup hooks YYYY/MM/DD HH:MM:SS (PID)> - running uisetup for foobar uisetup called [debug] uisetup called uisetup called [status] YYYY/MM/DD HH:MM:SS (PID)> > uisetup for foobar took * (glob) YYYY/MM/DD HH:MM:SS (PID)> > all uisetup took * (glob) YYYY/MM/DD HH:MM:SS (PID)> - executing extsetup hooks YYYY/MM/DD HH:MM:SS (PID)> - running extsetup for foobar YYYY/MM/DD HH:MM:SS (PID)> > extsetup for foobar took * (glob) YYYY/MM/DD HH:MM:SS (PID)> > all extsetup took * (glob) YYYY/MM/DD HH:MM:SS (PID)> - executing remaining aftercallbacks YYYY/MM/DD HH:MM:SS (PID)> > remaining aftercallbacks completed in * (glob) YYYY/MM/DD HH:MM:SS (PID)> - loading extension registration objects YYYY/MM/DD HH:MM:SS (PID)> > extension registration object loading took * (glob) YYYY/MM/DD HH:MM:SS (PID)> > extension foobar take a total of * to load (glob) YYYY/MM/DD HH:MM:SS (PID)> extension loading complete YYYY/MM/DD HH:MM:SS (PID)> loading additional extensions YYYY/MM/DD HH:MM:SS (PID)> - processing 1 entries YYYY/MM/DD HH:MM:SS (PID)> > loaded 0 extensions, total time * (glob) YYYY/MM/DD HH:MM:SS (PID)> - loading configtable attributes YYYY/MM/DD HH:MM:SS (PID)> - executing uisetup hooks YYYY/MM/DD HH:MM:SS (PID)> > all uisetup took * (glob) YYYY/MM/DD HH:MM:SS (PID)> - executing extsetup hooks YYYY/MM/DD HH:MM:SS (PID)> > all extsetup took * (glob) YYYY/MM/DD HH:MM:SS (PID)> - executing remaining aftercallbacks YYYY/MM/DD HH:MM:SS (PID)> > remaining aftercallbacks completed in * (glob) YYYY/MM/DD HH:MM:SS (PID)> - loading extension registration objects YYYY/MM/DD HH:MM:SS (PID)> > extension registration object loading took * (glob) YYYY/MM/DD HH:MM:SS (PID)> extension loading complete YYYY/MM/DD HH:MM:SS (PID)> - executing reposetup hooks YYYY/MM/DD HH:MM:SS (PID)> - running reposetup for foobar reposetup called for a ui == repo.ui YYYY/MM/DD HH:MM:SS (PID)> > reposetup for foobar took * (glob) YYYY/MM/DD HH:MM:SS (PID)> > all reposetup took * (glob) Foo $ cd .. $ echo 'foobar = !' >> $HGRCPATH