Mercurial > hg
view tests/test-bugzilla.t @ 42743:8c9a6adec67a
rust-discovery: using the children cache in add_missing
The DAG range computation often needs to get back to very old
revisions, and turns out to be disproportionately long, given
that the end goal is to remove the descendents of the given
missing revisons from the undecided set.
The fast iteration capabilities available in the Rust case make
it possible to avoid the DAG range entirely, at the cost of
precomputing the children cache, and to simply iterate on
children of the given missing revisions.
This is a case where staying on the same side of the interface
between the two languages has clear benefits.
On discoveries with initial undecided sets
small enough to bypass sampling entirely, the total cost of
computing the children cache and the subsequent iteration
becomes better than the Python + C counterpart, which relies on
reachableroots2.
For example, on a repo with more than one million revisions with
an initial undecided set of 11 elements, we get these figures:
Rust version with simple iteration
addcommons: 57.287us
first undecided computation: 184.278334ms
first children cache computation: 131.056us
addmissings iteration: 42.766us
first addinfo total: 185.24 ms
Python + C version
first addcommons: 0.29 ms
addcommons 0.21 ms
first undecided computation 191.35 ms
addmissings 45.75 ms
first addinfo total: 237.77 ms
On discoveries with large undecided sets, the initial price paid
makes the first addinfo slower than the Python + C version,
but that's more than compensated by the gain in sampling and
subsequent iterations.
Here's an extreme example with an undecided set of a million revisions:
Rust version:
first undecided computation: 293.842629ms
first children cache computation: 407.911297ms
addmissings iteration: 34.312869ms
first addinfo total: 776.02 ms
taking initial sample
query 2: sampling time: 1318.38 ms
query 2; still undecided: 1005013, sample size is: 200
addmissings: 143.062us
Python + C version:
first undecided computation 298.13 ms
addmissings 80.13 ms
first addinfo total: 399.62 ms
taking initial sample
query 2: sampling time: 3957.23 ms
query 2; still undecided: 1005013, sample size is: 200
addmissings 52.88 ms
Differential Revision: https://phab.mercurial-scm.org/D6428
author | Georges Racinet <georges.racinet@octobus.net> |
---|---|
date | Tue, 16 Apr 2019 01:16:39 +0200 |
parents | 7370f302be71 |
children | 42d2b31cee0b |
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mock bugzilla driver for testing template output: $ cat <<EOF > bzmock.py > from __future__ import absolute_import > from mercurial import extensions > from mercurial import pycompat > from mercurial import registrar > from mercurial.utils import stringutil > > configtable = {} > configitem = registrar.configitem(configtable) > > configitem(b'bugzilla', b'mocklog', > default=None, > ) > def extsetup(ui): > bugzilla = extensions.find(b'bugzilla') > class bzmock(bugzilla.bzaccess): > def __init__(self, ui): > super(bzmock, self).__init__(ui) > self._logfile = ui.config(b'bugzilla', b'mocklog') > def updatebug(self, bugid, newstate, text, committer): > with open(pycompat.fsdecode(self._logfile), 'ab') as f: > f.write(b'update bugid=%s, newstate=%s, committer=%s\n' > % (stringutil.pprint(bugid), > stringutil.pprint(newstate), > stringutil.pprint(committer))) > f.write(b'----\n' + text + b'\n----\n') > def notify(self, bugs, committer): > with open(pycompat.fsdecode(self._logfile), 'ab') as f: > f.write(b'notify bugs=%s, committer=%s\n' > % (stringutil.pprint(bugs), > stringutil.pprint(committer))) > bugzilla.bugzilla._versions[b'mock'] = bzmock > EOF set up mock repository: $ hg init mockremote $ cat <<EOF > mockremote/.hg/hgrc > [extensions] > bugzilla = > bzmock = $TESTTMP/bzmock.py > > [bugzilla] > version = mock > mocklog = $TESTTMP/bzmock.log > > [hooks] > incoming.bugzilla = python:hgext.bugzilla.hook > > [web] > baseurl=http://example.org/hg > > %include $TESTTMP/bzstyle.hgrc > EOF $ hg clone -q mockremote mocklocal push with default template: $ echo '[bugzilla]' > bzstyle.hgrc $ echo foo > mocklocal/foo $ hg ci -R mocklocal -Aqm 'Fixes bug 123' $ hg -R mocklocal push -q $ cat bzmock.log && rm bzmock.log update bugid=123, newstate={}, committer='test' ---- changeset 7875a8342c6f in repo $TESTTMP/mockremote refers to bug 123. details: Fixes bug 123 ---- notify bugs={123: {}}, committer='test' push with style: $ cat <<EOF > bzstyle.map > changeset = "{node|short} refers to bug {bug}." > EOF $ echo "style = $TESTTMP/bzstyle.map" >> bzstyle.hgrc $ echo foo >> mocklocal/foo $ hg ci -R mocklocal -qm 'Fixes bug 456' $ hg -R mocklocal push -q $ cat bzmock.log && rm bzmock.log update bugid=456, newstate={}, committer='test' ---- 2808b172464b refers to bug 456. ---- notify bugs={456: {}}, committer='test' push with template (overrides style): $ cat <<EOF >> bzstyle.hgrc > template = Changeset {node|short} in {root|basename}. > {hgweb}/rev/{node|short}\n > {desc} > EOF $ echo foo >> mocklocal/foo $ hg ci -R mocklocal -qm 'Fixes bug 789' $ hg -R mocklocal push -q $ cat bzmock.log && rm bzmock.log update bugid=789, newstate={}, committer='test' ---- Changeset a770f3e409f2 in mockremote. http://example.org/hg/rev/a770f3e409f2 Fixes bug 789 ---- notify bugs={789: {}}, committer='test'