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view tests/test-hgrc.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 | 5abc47d4ca6b |
children | d201a637c971 |
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Use hgrc within $TESTTMP $ HGRCPATH=`pwd`/hgrc $ export HGRCPATH hide outer repo $ hg init Use an alternate var for scribbling on hgrc to keep check-code from complaining about the important settings we may be overwriting: $ HGRC=`pwd`/hgrc $ export HGRC Basic syntax error $ echo "invalid" > $HGRC $ hg version hg: parse error at $TESTTMP/hgrc:1: invalid [255] $ echo "" > $HGRC Issue1199: Can't use '%' in hgrc (eg url encoded username) $ hg init "foo%bar" $ hg clone "foo%bar" foobar updating to branch default 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd foobar $ cat .hg/hgrc # example repository config (see 'hg help config' for more info) [paths] default = $TESTTMP/foo%bar # path aliases to other clones of this repo in URLs or filesystem paths # (see 'hg help config.paths' for more info) # # default:pushurl = ssh://jdoe@example.net/hg/jdoes-fork # my-fork = ssh://jdoe@example.net/hg/jdoes-fork # my-clone = /home/jdoe/jdoes-clone [ui] # name and email (local to this repository, optional), e.g. # username = Jane Doe <jdoe@example.com> $ hg paths default = $TESTTMP/foo%bar $ hg showconfig bundle.mainreporoot=$TESTTMP/foobar paths.default=$TESTTMP/foo%bar $ cd .. issue1829: wrong indentation $ echo '[foo]' > $HGRC $ echo ' x = y' >> $HGRC $ hg version hg: parse error at $TESTTMP/hgrc:2: x = y unexpected leading whitespace [255] $ "$PYTHON" -c "from __future__ import print_function; print('[foo]\nbar = a\n b\n c \n de\n fg \nbaz = bif cb \n')" \ > > $HGRC $ hg showconfig foo foo.bar=a\nb\nc\nde\nfg foo.baz=bif cb $ FAKEPATH=/path/to/nowhere $ export FAKEPATH $ echo '%include $FAKEPATH/no-such-file' > $HGRC $ hg version Mercurial Distributed SCM (version *) (glob) (see https://mercurial-scm.org for more information) Copyright (C) 2005-* Matt Mackall and others (glob) This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. $ unset FAKEPATH make sure global options given on the cmdline take precedence $ hg showconfig --config ui.verbose=True --quiet bundle.mainreporoot=$TESTTMP ui.verbose=False ui.debug=False ui.quiet=True $ touch foobar/untracked $ cat >> foobar/.hg/hgrc <<EOF > [ui] > verbose=True > EOF $ hg -R foobar st -q username expansion $ olduser=$HGUSER $ unset HGUSER $ FAKEUSER='John Doe' $ export FAKEUSER $ echo '[ui]' > $HGRC $ echo 'username = $FAKEUSER' >> $HGRC $ hg init usertest $ cd usertest $ touch bar $ hg commit --addremove --quiet -m "added bar" $ hg log --template "{author}\n" John Doe $ cd .. $ hg showconfig bundle.mainreporoot=$TESTTMP ui.username=$FAKEUSER $ unset FAKEUSER $ HGUSER=$olduser $ export HGUSER showconfig with multiple arguments $ echo "[alias]" > $HGRC $ echo "log = log -g" >> $HGRC $ echo "[defaults]" >> $HGRC $ echo "identify = -n" >> $HGRC $ hg showconfig alias defaults alias.log=log -g defaults.identify=-n $ hg showconfig alias alias alias.log=log -g $ hg showconfig alias.log alias.log alias.log=log -g $ hg showconfig alias defaults.identify alias.log=log -g defaults.identify=-n $ hg showconfig alias.log defaults.identify alias.log=log -g defaults.identify=-n HGPLAIN $ echo "[ui]" > $HGRC $ echo "debug=true" >> $HGRC $ echo "fallbackencoding=ASCII" >> $HGRC $ echo "quiet=true" >> $HGRC $ echo "slash=true" >> $HGRC $ echo "traceback=true" >> $HGRC $ echo "verbose=true" >> $HGRC $ echo "style=~/.hgstyle" >> $HGRC $ echo "logtemplate={node}" >> $HGRC $ echo "[defaults]" >> $HGRC $ echo "identify=-n" >> $HGRC $ echo "[alias]" >> $HGRC $ echo "log=log -g" >> $HGRC customized hgrc $ hg showconfig read config from: $TESTTMP/hgrc $TESTTMP/hgrc:13: alias.log=log -g repo: bundle.mainreporoot=$TESTTMP $TESTTMP/hgrc:11: defaults.identify=-n $TESTTMP/hgrc:2: ui.debug=true $TESTTMP/hgrc:3: ui.fallbackencoding=ASCII $TESTTMP/hgrc:4: ui.quiet=true $TESTTMP/hgrc:5: ui.slash=true $TESTTMP/hgrc:6: ui.traceback=true $TESTTMP/hgrc:7: ui.verbose=true $TESTTMP/hgrc:8: ui.style=~/.hgstyle $TESTTMP/hgrc:9: ui.logtemplate={node} plain hgrc $ HGPLAIN=; export HGPLAIN $ hg showconfig --config ui.traceback=True --debug read config from: $TESTTMP/hgrc repo: bundle.mainreporoot=$TESTTMP --config: ui.traceback=True --verbose: ui.verbose=False --debug: ui.debug=True --quiet: ui.quiet=False with environment variables $ PAGER=p1 EDITOR=e1 VISUAL=e2 hg showconfig --debug set config by: $EDITOR set config by: $VISUAL set config by: $PAGER read config from: $TESTTMP/hgrc repo: bundle.mainreporoot=$TESTTMP $PAGER: pager.pager=p1 $VISUAL: ui.editor=e2 --verbose: ui.verbose=False --debug: ui.debug=True --quiet: ui.quiet=False plain mode with exceptions $ cat > plain.py <<EOF > from mercurial import commands, extensions > def _config(orig, ui, repo, *values, **opts): > ui.write(b'plain: %r\n' % ui.plain()) > return orig(ui, repo, *values, **opts) > def uisetup(ui): > extensions.wrapcommand(commands.table, b'config', _config) > EOF $ echo "[extensions]" >> $HGRC $ echo "plain=./plain.py" >> $HGRC $ HGPLAINEXCEPT=; export HGPLAINEXCEPT $ hg showconfig --config ui.traceback=True --debug plain: True read config from: $TESTTMP/hgrc repo: bundle.mainreporoot=$TESTTMP $TESTTMP/hgrc:15: extensions.plain=./plain.py --config: ui.traceback=True --verbose: ui.verbose=False --debug: ui.debug=True --quiet: ui.quiet=False $ unset HGPLAIN $ hg showconfig --config ui.traceback=True --debug plain: True read config from: $TESTTMP/hgrc repo: bundle.mainreporoot=$TESTTMP $TESTTMP/hgrc:15: extensions.plain=./plain.py --config: ui.traceback=True --verbose: ui.verbose=False --debug: ui.debug=True --quiet: ui.quiet=False $ HGPLAINEXCEPT=i18n; export HGPLAINEXCEPT $ hg showconfig --config ui.traceback=True --debug plain: True read config from: $TESTTMP/hgrc repo: bundle.mainreporoot=$TESTTMP $TESTTMP/hgrc:15: extensions.plain=./plain.py --config: ui.traceback=True --verbose: ui.verbose=False --debug: ui.debug=True --quiet: ui.quiet=False source of paths is not mangled $ cat >> $HGRCPATH <<EOF > [paths] > foo = bar > EOF $ hg showconfig --debug paths plain: True read config from: $TESTTMP/hgrc $TESTTMP/hgrc:17: paths.foo=$TESTTMP/bar