Mercurial > hg
view contrib/xml.rnc @ 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 | 3acfb69a4729 |
children |
line wrap: on
line source
# RelaxNG schema for "xml" log style # Inspired by Subversion's XML log format. start = log node.type = xsd:string {minLength = "40" maxLength = "40"} log = element log { logentry+ } logentry = element logentry { logentry.attlist, branch*, tag*, hgparent*, author, date, msg, paths?, copies?, extra* } logentry.attlist = attribute revision {xsd:nonNegativeInteger} & attribute node {node.type} branch = element branch { text } tag = element tag { text } hgparent = element parent {hgparent.attlist, text} hgparent.attlist = attribute revision {xsd:integer {minInclusive = "-1"} } & attribute node {node.type} author = element author { author.attlist, text } author.attlist = attribute email {text} date = element date {xsd:dateTime} msg = element msg {msg.attlist, text} msg.attlist = attribute xml:space {"preserve"} paths = element paths { path* } path = element path { path.attlist, text } path.attlist = # Action: (A)dd, (M)odify, (R)emove attribute action {"A"|"M"|"R"} copies = element copies { copy+ } copy = element copy { copy.attlist, text } copy.attlist = attribute source {text} extra = element extra {extra.attlist, text} extra.attlist = attribute key {text}