Mercurial > hg
view tests/test-contrib-check-commit.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 | 1bd3e922de18 |
children | 24a07347aa60 |
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Test the 'check-commit' script ============================== A fine patch: $ cat > patch-with-long-header.diff << EOF > # HG changeset patch > # User timeless <timeless@mozdev.org> > # Date 1448911706 0 > # Mon Nov 30 19:28:26 2015 +0000 > # Node ID c41cb6d2b7dbd62b1033727f8606b8c09fc4aa88 > # Parent 42aa0e570eaa364a622bc4443b0bcb79b1100a58 > # ClownJoke This is a veryly long header that should not be warned about because its not the description > bundle2: use Oxford comma (issue123) (BC) > > diff --git a/hgext/transplant.py b/hgext/transplant.py > --- a/hgext/transplant.py > +++ b/hgext/transplant.py > @@ -599,7 +599,7 @@ > return > if not (opts.get('source') or revs or > opts.get('merge') or opts.get('branch')): > - raise error.Abort(_('no source URL, branch revision or revision ' > + raise error.Abort(_('no source URL, branch revision, or revision ' > 'list provided')) > if opts.get('all'): > > + def blahblah(x): > + pass > EOF $ cat patch-with-long-header.diff | $TESTDIR/../contrib/check-commit This would normally be against the rules, but it's okay because that's what tagging and signing looks like: $ cat > creates-a-tag.diff << EOF > # HG changeset patch > # User Augie Fackler <raf@durin42.com> > # Date 1484787778 18000 > # Wed Jan 18 20:02:58 2017 -0500 > # Branch stable > # Node ID c177635e4acf52923bc3aa9f72a5b1ad1197b173 > # Parent a1dd2c0c479e0550040542e392e87bc91262517e > Added tag 4.1-rc for changeset a1dd2c0c479e > > diff --git a/.hgtags b/.hgtags > --- a/.hgtags > +++ b/.hgtags > @@ -150,3 +150,4 @@ 438173c415874f6ac653efc1099dec9c9150e90f > eab27446995210c334c3d06f1a659e3b9b5da769 4.0 > b3b1ae98f6a0e14c1e1ba806a6c18e193b6dae5c 4.0.1 > e69874dc1f4e142746ff3df91e678a09c6fc208c 4.0.2 > +a1dd2c0c479e0550040542e392e87bc91262517e 4.1-rc > EOF $ $TESTDIR/../contrib/check-commit < creates-a-tag.diff A patch with lots of errors: $ cat > patch-with-long-header.diff << EOF > # HG changeset patch > # User timeless > # Date 1448911706 0 > # Mon Nov 30 19:28:26 2015 +0000 > # Node ID c41cb6d2b7dbd62b1033727f8606b8c09fc4aa88 > # Parent 42aa0e570eaa364a622bc4443b0bcb79b1100a58 > # ClownJoke This is a veryly long header that should not be warned about because its not the description > transplant/foo: this summary is way too long use Oxford comma (bc) (bug123) (issue 244) > > diff --git a/hgext/transplant.py b/hgext/transplant.py > --- a/hgext/transplant.py > +++ b/hgext/transplant.py > @@ -599,7 +599,7 @@ > return > if not (opts.get('source') or revs or > opts.get('merge') or opts.get('branch')): > - raise error.Abort(_('no source URL, branch revision or revision ' > + raise error.Abort(_('no source URL, branch revision, or revision ' > 'list provided')) > if opts.get('all'): > EOF $ cat patch-with-long-header.diff | $TESTDIR/../contrib/check-commit 1: username is not an email address # User timeless 7: summary keyword should be most user-relevant one-word command or topic transplant/foo: this summary is way too long use Oxford comma (bc) (bug123) (issue 244) 7: (BC) needs to be uppercase transplant/foo: this summary is way too long use Oxford comma (bc) (bug123) (issue 244) 7: use (issueDDDD) instead of bug transplant/foo: this summary is way too long use Oxford comma (bc) (bug123) (issue 244) 7: no space allowed between issue and number transplant/foo: this summary is way too long use Oxford comma (bc) (bug123) (issue 244) 7: summary line too long (limit is 78) transplant/foo: this summary is way too long use Oxford comma (bc) (bug123) (issue 244) [1] A patch with other errors: $ cat > patch-with-long-header.diff << EOF > # HG changeset patch > # User timeless > # Date 1448911706 0 > # Mon Nov 30 19:28:26 2015 +0000 > # Node ID c41cb6d2b7dbd62b1033727f8606b8c09fc4aa88 > # Parent 42aa0e570eaa364a622bc4443b0bcb79b1100a58 > # ClownJoke This is a veryly long header that should not be warned about because its not the description > This has no topic and ends with a period. > > diff --git a/hgext/transplant.py b/hgext/transplant.py > --- a/hgext/transplant.py > +++ b/hgext/transplant.py > @@ -599,7 +599,7 @@ > if opts.get('all'): > > > + > + some = otherjunk > + > + > + def blah_blah(x): > + pass > + > > EOF $ cat patch-with-long-header.diff | $TESTDIR/../contrib/check-commit 1: username is not an email address # User timeless 7: don't capitalize summary lines This has no topic and ends with a period. 7: summary line doesn't start with 'topic: ' This has no topic and ends with a period. 7: don't add trailing period on summary line This has no topic and ends with a period. 20: adds a function with foo_bar naming + def blah_blah(x): [1]