Mercurial > hg
view tests/test-narrow-clone.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 | a0886a4d6dce |
children | 5c2a4f37eace |
line wrap: on
line source
$ . "$TESTDIR/narrow-library.sh" $ hg init master $ cd master $ cat >> .hg/hgrc <<EOF > [narrow] > serveellipses=True > EOF $ mkdir dir $ mkdir dir/src $ cd dir/src $ for x in `$TESTDIR/seq.py 20`; do echo $x > "f$x"; hg add "f$x"; hg commit -m "Commit src $x"; done $ cd .. $ mkdir tests $ cd tests $ for x in `$TESTDIR/seq.py 20`; do echo $x > "t$x"; hg add "t$x"; hg commit -m "Commit test $x"; done $ cd ../../.. Only path: and rootfilesin: pattern prefixes are allowed $ hg clone --narrow ssh://user@dummy/master badnarrow --noupdate --include 'glob:**' abort: invalid prefix on narrow pattern: glob:** (narrow patterns must begin with one of the following: path:, rootfilesin:) [255] $ hg clone --narrow ssh://user@dummy/master badnarrow --noupdate --exclude 'set:ignored' abort: invalid prefix on narrow pattern: set:ignored (narrow patterns must begin with one of the following: path:, rootfilesin:) [255] narrow clone a file, f10 $ hg clone --narrow ssh://user@dummy/master narrow --noupdate --include "dir/src/f10" requesting all changes adding changesets adding manifests adding file changes added 3 changesets with 1 changes to 1 files new changesets *:* (glob) $ cd narrow $ cat .hg/requires | grep -v generaldelta dotencode fncache narrowhg-experimental revlogv1 sparserevlog store testonly-simplestore (reposimplestore !) $ hg tracked I path:dir/src/f10 $ hg tracked I path:dir/src/f10 $ hg update 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ find * | sort dir dir/src dir/src/f10 $ cat dir/src/f10 10 $ cd .. BUG: local-to-local narrow clones should work, but don't. $ hg clone --narrow master narrow-via-localpeer --noupdate --include "dir/src/f10" requesting all changes abort: server does not support narrow clones [255] $ hg tracked -R narrow-via-localpeer abort: repository narrow-via-localpeer not found! [255] $ rm -Rf narrow-via-localpeer narrow clone with a newline should fail $ hg clone --narrow ssh://user@dummy/master narrow_fail --noupdate --include 'dir/src/f10 > ' abort: newlines are not allowed in narrowspec paths [255] narrow clone a directory, tests/, except tests/t19 $ hg clone --narrow ssh://user@dummy/master narrowdir --noupdate --include "dir/tests/" --exclude "dir/tests/t19" requesting all changes adding changesets adding manifests adding file changes added 21 changesets with 19 changes to 19 files new changesets *:* (glob) $ cd narrowdir $ hg tracked I path:dir/tests X path:dir/tests/t19 $ hg tracked I path:dir/tests X path:dir/tests/t19 $ hg update 19 files updated, 0 files merged, 0 files removed, 0 files unresolved $ find * | sort dir dir/tests dir/tests/t1 dir/tests/t10 dir/tests/t11 dir/tests/t12 dir/tests/t13 dir/tests/t14 dir/tests/t15 dir/tests/t16 dir/tests/t17 dir/tests/t18 dir/tests/t2 dir/tests/t20 dir/tests/t3 dir/tests/t4 dir/tests/t5 dir/tests/t6 dir/tests/t7 dir/tests/t8 dir/tests/t9 $ cd .. narrow clone everything but a directory (tests/) $ hg clone --narrow ssh://user@dummy/master narrowroot --noupdate --exclude "dir/tests" requesting all changes adding changesets adding manifests adding file changes added 21 changesets with 20 changes to 20 files new changesets *:* (glob) $ cd narrowroot $ hg tracked I path:. X path:dir/tests $ hg tracked I path:. X path:dir/tests $ hg update 20 files updated, 0 files merged, 0 files removed, 0 files unresolved $ find * | sort dir dir/src dir/src/f1 dir/src/f10 dir/src/f11 dir/src/f12 dir/src/f13 dir/src/f14 dir/src/f15 dir/src/f16 dir/src/f17 dir/src/f18 dir/src/f19 dir/src/f2 dir/src/f20 dir/src/f3 dir/src/f4 dir/src/f5 dir/src/f6 dir/src/f7 dir/src/f8 dir/src/f9 $ cd .. narrow clone no paths at all $ hg clone --narrow ssh://user@dummy/master narrowempty --noupdate requesting all changes adding changesets adding manifests adding file changes added 1 changesets with 0 changes to 0 files new changesets * (glob) $ cd narrowempty $ hg tracked $ hg update 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ ls $ cd .. simple clone $ hg clone ssh://user@dummy/master simpleclone requesting all changes adding changesets adding manifests adding file changes added 40 changesets with 40 changes to 40 files new changesets * (glob) updating to branch default 40 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd simpleclone $ find * | sort dir dir/src dir/src/f1 dir/src/f10 dir/src/f11 dir/src/f12 dir/src/f13 dir/src/f14 dir/src/f15 dir/src/f16 dir/src/f17 dir/src/f18 dir/src/f19 dir/src/f2 dir/src/f20 dir/src/f3 dir/src/f4 dir/src/f5 dir/src/f6 dir/src/f7 dir/src/f8 dir/src/f9 dir/tests dir/tests/t1 dir/tests/t10 dir/tests/t11 dir/tests/t12 dir/tests/t13 dir/tests/t14 dir/tests/t15 dir/tests/t16 dir/tests/t17 dir/tests/t18 dir/tests/t19 dir/tests/t2 dir/tests/t20 dir/tests/t3 dir/tests/t4 dir/tests/t5 dir/tests/t6 dir/tests/t7 dir/tests/t8 dir/tests/t9 $ cd .. Testing the --narrowspec flag to clone $ cat >> narrowspecs <<EOF > %include foo > [include] > path:dir/tests/ > path:dir/src/f12 > EOF $ hg clone ssh://user@dummy/master specfile --narrowspec narrowspecs reading narrowspec from '$TESTTMP/narrowspecs' abort: cannot specify other files using '%include' in narrowspec [255] $ cat > narrowspecs <<EOF > [include] > path:dir/tests/ > path:dir/src/f12 > EOF $ hg clone ssh://user@dummy/master specfile --narrowspec narrowspecs reading narrowspec from '$TESTTMP/narrowspecs' requesting all changes adding changesets adding manifests adding file changes added 23 changesets with 21 changes to 21 files new changesets c13e3773edb4:26ce255d5b5d updating to branch default 21 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd specfile $ hg tracked I path:dir/src/f12 I path:dir/tests $ cd .. Narrow spec with invalid patterns is rejected $ cat > narrowspecs <<EOF > [include] > glob:** > EOF $ hg clone ssh://user@dummy/master badspecfile --narrowspec narrowspecs reading narrowspec from '$TESTTMP/narrowspecs' abort: invalid prefix on narrow pattern: glob:** (narrow patterns must begin with one of the following: path:, rootfilesin:) [255]