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view tests/test-config.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 | 60789444acd6 |
children | 242ad45b60b3 |
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hide outer repo $ hg init Invalid syntax: no value $ cat > .hg/hgrc << EOF > novaluekey > EOF $ hg showconfig hg: parse error at $TESTTMP/.hg/hgrc:1: novaluekey [255] Invalid syntax: no key $ cat > .hg/hgrc << EOF > =nokeyvalue > EOF $ hg showconfig hg: parse error at $TESTTMP/.hg/hgrc:1: =nokeyvalue [255] Test hint about invalid syntax from leading white space $ cat > .hg/hgrc << EOF > key=value > EOF $ hg showconfig hg: parse error at $TESTTMP/.hg/hgrc:1: key=value unexpected leading whitespace [255] $ cat > .hg/hgrc << EOF > [section] > key=value > EOF $ hg showconfig hg: parse error at $TESTTMP/.hg/hgrc:1: [section] unexpected leading whitespace [255] Reset hgrc $ echo > .hg/hgrc Test case sensitive configuration $ cat <<EOF >> $HGRCPATH > [Section] > KeY = Case Sensitive > key = lower case > EOF $ hg showconfig Section Section.KeY=Case Sensitive Section.key=lower case $ hg showconfig Section -Tjson [ { "defaultvalue": null, "name": "Section.KeY", "source": "*.hgrc:*", (glob) "value": "Case Sensitive" }, { "defaultvalue": null, "name": "Section.key", "source": "*.hgrc:*", (glob) "value": "lower case" } ] $ hg showconfig Section.KeY -Tjson [ { "defaultvalue": null, "name": "Section.KeY", "source": "*.hgrc:*", (glob) "value": "Case Sensitive" } ] $ hg showconfig -Tjson | tail -7 { "defaultvalue": null, "name": "*", (glob) "source": "*", (glob) "value": "*" (glob) } ] Test empty config source: $ cat <<EOF > emptysource.py > def reposetup(ui, repo): > ui.setconfig(b'empty', b'source', b'value') > EOF $ cp .hg/hgrc .hg/hgrc.orig $ cat <<EOF >> .hg/hgrc > [extensions] > emptysource = `pwd`/emptysource.py > EOF $ hg config --debug empty.source read config from: * (glob) none: value $ hg config empty.source -Tjson [ { "defaultvalue": null, "name": "empty.source", "source": "", "value": "value" } ] $ cp .hg/hgrc.orig .hg/hgrc Test "%unset" $ cat >> $HGRCPATH <<EOF > [unsettest] > local-hgrcpath = should be unset (HGRCPATH) > %unset local-hgrcpath > > global = should be unset (HGRCPATH) > > both = should be unset (HGRCPATH) > > set-after-unset = should be unset (HGRCPATH) > EOF $ cat >> .hg/hgrc <<EOF > [unsettest] > local-hgrc = should be unset (.hg/hgrc) > %unset local-hgrc > > %unset global > > both = should be unset (.hg/hgrc) > %unset both > > set-after-unset = should be unset (.hg/hgrc) > %unset set-after-unset > set-after-unset = should be set (.hg/hgrc) > EOF $ hg showconfig unsettest unsettest.set-after-unset=should be set (.hg/hgrc) Test exit code when no config matches $ hg config Section.idontexist [1] sub-options in [paths] aren't expanded $ cat > .hg/hgrc << EOF > [paths] > foo = ~/foo > foo:suboption = ~/foo > EOF $ hg showconfig paths paths.foo:suboption=~/foo paths.foo=$TESTTMP/foo edit failure $ HGEDITOR=false hg config --edit abort: edit failed: false exited with status 1 [255] config affected by environment variables $ EDITOR=e1 VISUAL=e2 hg config --debug | grep 'ui\.editor' $VISUAL: ui.editor=e2 $ VISUAL=e2 hg config --debug --config ui.editor=e3 | grep 'ui\.editor' --config: ui.editor=e3 $ PAGER=p1 hg config --debug | grep 'pager\.pager' $PAGER: pager.pager=p1 $ PAGER=p1 hg config --debug --config pager.pager=p2 | grep 'pager\.pager' --config: pager.pager=p2 verify that aliases are evaluated as well $ hg init aliastest $ cd aliastest $ cat > .hg/hgrc << EOF > [ui] > user = repo user > EOF $ touch index $ unset HGUSER $ hg ci -Am test adding index $ hg log --template '{author}\n' repo user $ cd .. alias has lower priority $ hg init aliaspriority $ cd aliaspriority $ cat > .hg/hgrc << EOF > [ui] > user = alias user > username = repo user > EOF $ touch index $ unset HGUSER $ hg ci -Am test adding index $ hg log --template '{author}\n' repo user $ cd .. configs should be read in lexicographical order $ mkdir configs $ for i in `$TESTDIR/seq.py 10 99`; do > printf "[section]\nkey=$i" > configs/$i.rc > done $ HGRCPATH=configs hg config section.key 99