Mercurial > hg
view tests/test-convert-authormap.t @ 35599:af25237be091
perf: add threading capability to perfbdiff
Since we are releasing the GIL during diffing, it is interesting to see how a
thread pool would perform on diffing. We add a new `--threads` argument to
commands. Synchronizing the thread pool is a bit complex because we want to be
able to reuse it from one run to another.
On my computer (i7 with 4 cores + hyperthreading), I get the following data for
about 12000 revisions:
threads wall comb wall gain comb overhead
none 31.596715 31.59 0.00% 0.00%
1 31.621228 31.62 -0.08% 0.09%
2 16.406202 32.8 48.08% 3.83%
3 11.598334 34.76 63.29% 10.03%
4 9.205421 36.77 70.87% 16.40%
5 8.517604 42.51 73.04% 34.57%
6 7.94645 47.58 74.85% 50.62%
7 7.434972 51.92 76.47% 64.36%
8 7.070638 55.34 77.62% 75.18%
Compared to the feature disabled (threads=0), the overhead is negligible with
the threading code (threads=1), and the gain is already 48% with two threads.
author | Boris Feld <boris.feld@octobus.net> |
---|---|
date | Sun, 17 Dec 2017 04:31:27 +0100 |
parents | 4441705b7111 |
children |
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$ cat >> $HGRCPATH <<EOF > [extensions] > convert= > EOF Prepare orig repo $ hg init orig $ cd orig $ echo foo > foo $ HGUSER='user name' hg ci -qAm 'foo' $ cd .. Explicit --authors $ cat > authormap.txt <<EOF > user name = Long User Name > > # comment > this line is ignored > EOF $ hg convert --authors authormap.txt orig new initializing destination new repository ignoring bad line in author map file authormap.txt: this line is ignored scanning source... sorting... converting... 0 foo writing author map file $TESTTMP/new/.hg/authormap $ cat new/.hg/authormap user name=Long User Name $ hg -Rnew log changeset: 0:d89716e88087 tag: tip user: Long User Name date: Thu Jan 01 00:00:00 1970 +0000 summary: foo $ rm -rf new Implicit .hg/authormap $ hg init new $ mv authormap.txt new/.hg/authormap $ hg convert orig new ignoring bad line in author map file $TESTTMP/new/.hg/authormap: this line is ignored scanning source... sorting... converting... 0 foo $ hg -Rnew log changeset: 0:d89716e88087 tag: tip user: Long User Name date: Thu Jan 01 00:00:00 1970 +0000 summary: foo