Mercurial > hg
view tests/test-diff-binary-file.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 |
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$ hg init a $ cd a $ cp "$TESTDIR/binfile.bin" . $ hg add binfile.bin $ hg ci -m 'add binfile.bin' $ echo >> binfile.bin $ hg ci -m 'change binfile.bin' $ hg revert -r 0 binfile.bin $ hg ci -m 'revert binfile.bin' $ hg cp binfile.bin nonbinfile $ echo text > nonbinfile $ hg ci -m 'make non-binary copy of binary file' $ hg diff --nodates -r 0 -r 1 diff -r 48b371597640 -r acea2ab458c8 binfile.bin Binary file binfile.bin has changed $ hg diff --nodates -r 0 -r 2 $ hg diff --git -r 0 -r 1 diff --git a/binfile.bin b/binfile.bin index 37ba3d1c6f17137d9c5f5776fa040caf5fe73ff9..58dc31a9e2f40f74ff3b45903f7d620b8e5b7356 GIT binary patch literal 594 zc$@)J0<HatP)<h;3K|Lk000e1NJLTq000mG000mO0ssI2kdbIM00009a7bBm000XU z000XU0RWnu7ytkO2XskIMF-Uh9TW;VpMjwv0005-Nkl<ZD9@FWPs=e;7{<>W$NUkd zX$nnYLt$-$V!?uy+1V%`z&Eh=ah|duER<4|QWhju3gb^nF*8iYobxWG-qqXl=2~5M z*IoDB)sG^CfNuoBmqLTVU^<;@nwHP!1wrWd`{(mHo6VNXWtyh{alzqmsH*yYzpvLT zLdY<T=ks|woh-`&01!ej#(xbV1f|pI*=%;d-%F*E*X#ZH`4I%6SS+$EJDE&ct=8po ziN#{?_j|kD%Cd|oiqds`xm@;oJ-^?NG3Gdqrs?5u*zI;{nogxsx~^|Fn^Y?Gdc6<; zfMJ+iF1J`LMx&A2?dEwNW8ClebzPTbIh{@$hS6*`kH@1d%Lo7fA#}N1)oN7`gm$~V z+wDx#)OFqMcE{s!JN0-xhG8ItAjVkJwEcb`3WWlJfU2r?;Pd%dmR+q@mSri5q9_W- zaR2~ECX?B2w+zELozC0s*6Z~|QG^f{3I#<`?)Q7U-JZ|q5W;9Q8i_=pBuSzunx=U; z9C)5jBoYw9^?EHyQl(M}1OlQcCX>lXB*ODN003Z&P17_@)3Pi=i0wb04<W?v-u}7K zXmmQA+wDgE!qR9o8jr`%=ab_&uh(l?R=r;Tjiqon91I2-hIu?57~@*4h7h9uORK#= gQItJW-{SoTm)8|5##k|m00000NkvXXu0mjf3JwksH2?qr $ hg diff --git -r 0 -r 2 $ hg diff --config diff.nobinary=True --git -r 0 -r 1 diff --git a/binfile.bin b/binfile.bin Binary file binfile.bin has changed $ HGPLAIN=1 hg diff --config diff.nobinary=True --git -r 0 -r 1 diff --git a/binfile.bin b/binfile.bin index 37ba3d1c6f17137d9c5f5776fa040caf5fe73ff9..58dc31a9e2f40f74ff3b45903f7d620b8e5b7356 GIT binary patch literal 594 zc$@)J0<HatP)<h;3K|Lk000e1NJLTq000mG000mO0ssI2kdbIM00009a7bBm000XU z000XU0RWnu7ytkO2XskIMF-Uh9TW;VpMjwv0005-Nkl<ZD9@FWPs=e;7{<>W$NUkd zX$nnYLt$-$V!?uy+1V%`z&Eh=ah|duER<4|QWhju3gb^nF*8iYobxWG-qqXl=2~5M z*IoDB)sG^CfNuoBmqLTVU^<;@nwHP!1wrWd`{(mHo6VNXWtyh{alzqmsH*yYzpvLT zLdY<T=ks|woh-`&01!ej#(xbV1f|pI*=%;d-%F*E*X#ZH`4I%6SS+$EJDE&ct=8po ziN#{?_j|kD%Cd|oiqds`xm@;oJ-^?NG3Gdqrs?5u*zI;{nogxsx~^|Fn^Y?Gdc6<; zfMJ+iF1J`LMx&A2?dEwNW8ClebzPTbIh{@$hS6*`kH@1d%Lo7fA#}N1)oN7`gm$~V z+wDx#)OFqMcE{s!JN0-xhG8ItAjVkJwEcb`3WWlJfU2r?;Pd%dmR+q@mSri5q9_W- zaR2~ECX?B2w+zELozC0s*6Z~|QG^f{3I#<`?)Q7U-JZ|q5W;9Q8i_=pBuSzunx=U; z9C)5jBoYw9^?EHyQl(M}1OlQcCX>lXB*ODN003Z&P17_@)3Pi=i0wb04<W?v-u}7K zXmmQA+wDgE!qR9o8jr`%=ab_&uh(l?R=r;Tjiqon91I2-hIu?57~@*4h7h9uORK#= gQItJW-{SoTm)8|5##k|m00000NkvXXu0mjf3JwksH2?qr $ hg diff --git -r 2 -r 3 diff --git a/binfile.bin b/nonbinfile copy from binfile.bin copy to nonbinfile index 37ba3d1c6f17137d9c5f5776fa040caf5fe73ff9..8e27be7d6154a1f68ea9160ef0e18691d20560dc GIT binary patch literal 5 Mc$_OqttjCF00uV!&;S4c $ cd .. Test text mode with extended git-style diff format $ hg init b $ cd b $ cat > writebin.py <<EOF > import sys > path = sys.argv[1] > open(path, 'wb').write(b'\x00\x01\x02\x03') > EOF $ "$PYTHON" writebin.py binfile.bin $ hg add binfile.bin $ hg ci -m 'add binfile.bin' $ echo >> binfile.bin $ hg ci -m 'change binfile.bin' $ hg diff --git -a -r 0 -r 1 diff --git a/binfile.bin b/binfile.bin --- a/binfile.bin +++ b/binfile.bin @@ -1,1 +1,1 @@ -\x00\x01\x02\x03 (esc) \ No newline at end of file +\x00\x01\x02\x03 (esc) $ HGPLAIN=1 hg diff --git -a -r 0 -r 1 diff --git a/binfile.bin b/binfile.bin --- a/binfile.bin +++ b/binfile.bin @@ -1,1 +1,1 @@ -\x00\x01\x02\x03 (esc) \ No newline at end of file +\x00\x01\x02\x03 (esc) Test binary mode with extended git-style diff format $ hg diff --no-binary -r 0 -r 1 diff -r fb45f71337ad -r 9ca112d1a3c1 binfile.bin Binary file binfile.bin has changed $ hg diff --git --no-binary -r 0 -r 1 diff --git a/binfile.bin b/binfile.bin Binary file binfile.bin has changed $ hg diff --git --binary -r 0 -r 1 diff --git a/binfile.bin b/binfile.bin index eaf36c1daccfdf325514461cd1a2ffbc139b5464..ba71a782e93f3fb63a428383706065e3ec2828e9 GIT binary patch literal 5 Mc${NkWMbw50018V5dZ)H $ hg diff --git --binary --config diff.nobinary=True -r 0 -r 1 diff --git a/binfile.bin b/binfile.bin index eaf36c1daccfdf325514461cd1a2ffbc139b5464..ba71a782e93f3fb63a428383706065e3ec2828e9 GIT binary patch literal 5 Mc${NkWMbw50018V5dZ)H $ hg diff --git --binary --text -r 0 -r 1 diff --git a/binfile.bin b/binfile.bin --- a/binfile.bin +++ b/binfile.bin @@ -1,1 +1,1 @@ -\x00\x01\x02\x03 (esc) \ No newline at end of file +\x00\x01\x02\x03 (esc) $ cd ..