Mercurial > hg
view tests/test-narrow-patterns.t @ 49777:e1953a34c110
bundle: emit full snapshot as is, without doing a redelta
With the new `forced` delta-reused policy, it become important to be able to
send full snapshot where full snapshot are needed. Otherwise, the fallback delta
will simply be used on the client side… creating monstrous delta chain, since
revision that are meant as a reset of delta-chain chain becoming too complex are
simply adding a new full delta-tree on the leaf of another one.
In the `non-forced` cases, client process full snapshot from the bundle
differently from deltas, so client will still try to convert the full snapshot
into a delta if possible. So this will no lead to pathological storage
explosion.
I have considered making this configurable, but the impact seems limited enough
that it does not seems to be worth it. Especially with the current
sparse-revlog format that use "delta-tree" with multiple level snapshots, full
snapshot are much less frequent and not that different from other intermediate
snapshot that we are already sending over the wire anyway.
CPU wise, this will help the bundling side a little as it will not need to
reconstruct revisions and compute deltas. The unbundling side might save a tiny
amount of CPU as it won't need to reconstruct the delta-base to reconstruct the
revision full text. This only slightly visible in some of the benchmarks. And
have no real impact on most of them.
### data-env-vars.name = pypy-2018-08-01-zstd-sparse-revlog
# benchmark.name = perf-bundle
# benchmark.variants.revs = last-40000
before: 11.467186 seconds
just-emit-full: 11.190576 seconds (-2.41%)
with-pull-force: 11.041091 seconds (-3.72%)
# benchmark.name = perf-unbundle
# benchmark.variants.revs = last-40000
before: 16.744862
just-emit-full:: 16.561036 seconds (-1.10%)
with-pull-force: 16.389344 seconds (-2.12%)
# benchmark.name = pull
# benchmark.variants.revs = last-40000
before: 26.870569
just-emit-full: 26.391188 seconds (-1.78%)
with-pull-force: 25.633184 seconds (-4.60%)
Space wise (so network-wise) the impact is fairly small. When taking compression into
account.
Below are tests the size of `hg bundle --all` for a handful of benchmark repositories
(with bzip, zstd compression and without it)
This show a small increase in the bundle size, but nothing really significant
except maybe for mozilla-try (+12%) that nobody really pulls large chunk of anyway.
Mozilla-try is also the repository that benefit the most for not having to
recompute deltas client size.
### mercurial:
bzip-before: 26 406 342 bytes
bzip-after: 26 691 543 bytes +1.08%
zstd-before: 27 918 645 bytes
zstd-after: 28 075 896 bytes +0.56%
none-before: 98 675 601 bytes
none-after: 100 411 237 bytes +1.76%
### pypy
bzip-before: 201 295 752 bytes
bzip-after: 209 780 282 bytes +4.21%
zstd-before: 202 974 795 bytes
zstd-after: 205 165 780 bytes +1.08%
none-before: 871 070 261 bytes
none-after: 993 595 057 bytes +14.07%
### netbeans
bzip-before: 601 314 330 bytes
bzip-after: 614 246 241 bytes +2.15%
zstd-before: 604 745 136 bytes
zstd-after: 615 497 705 bytes +1.78%
none-before: 3 338 238 571 bytes
none-after: 3 439 422 535 bytes +3.03%
### mozilla-central
bzip-before: 1 493 006 921 bytes
bzip-after: 1 549 650 570 bytes +3.79%
zstd-before: 1 481 910 102 bytes
zstd-after: 1 513 052 415 bytes +2.10%
none-before: 6 535 929 910 bytes
none-after: 7 010 191 342 bytes +7.26%
### mozilla-try
bzip-before: 6 583 425 999 bytes
bzip-after: 7 423 536 928 bytes +12.76%
zstd-before: 6 021 009 212 bytes
zstd-after: 6 674 922 420 bytes +10.86%
none-before: 22 954 739 558 bytes
none-after: 26 013 854 771 bytes +13.32%
| author | Pierre-Yves David <pierre-yves.david@octobus.net> |
|---|---|
| date | Wed, 07 Dec 2022 20:12:23 +0100 |
| parents | 86418ad637d1 |
| children |
line wrap: on
line source
$ . "$TESTDIR/narrow-library.sh" initialize nested directories to validate complex include/exclude patterns $ hg init master $ cd master $ cat >> .hg/hgrc <<EOF > [narrow] > serveellipses=True > EOF $ echo root > root $ hg add root $ hg commit -m 'add root' $ for d in dir1 dir2 dir1/dirA dir1/dirB dir2/dirA dir2/dirB > do > mkdir -p $d > echo $d/foo > $d/foo > hg add $d/foo > hg commit -m "add $d/foo" > echo $d/bar > $d/bar > hg add $d/bar > hg commit -m "add $d/bar" > done #if execbit $ chmod +x dir1/dirA/foo $ hg commit -m "make dir1/dirA/foo executable" #else $ hg import --bypass - <<EOF > # HG changeset patch > make dir1/dirA/foo executable > > diff --git a/dir1/dirA/foo b/dir1/dirA/foo > old mode 100644 > new mode 100755 > EOF applying patch from stdin $ hg update -qr tip #endif $ hg log -G -T '{rev} {node|short} {files}\n' @ 13 c87ca422d521 dir1/dirA/foo | o 12 951b8a83924e dir2/dirB/bar | o 11 01ae5a51b563 dir2/dirB/foo | o 10 5eababdf0ac5 dir2/dirA/bar | o 9 99d690663739 dir2/dirA/foo | o 8 8e80155d5445 dir1/dirB/bar | o 7 406760310428 dir1/dirB/foo | o 6 623466a5f475 dir1/dirA/bar | o 5 06ff3a5be997 dir1/dirA/foo | o 4 33227af02764 dir2/bar | o 3 5e1f9d8d7c69 dir2/foo | o 2 594bc4b13d4a dir1/bar | o 1 47f480a08324 dir1/foo | o 0 2a4f0c3b67da root $ cd .. clone a narrow portion of the master, such that we can widen it later $ hg clone --narrow ssh://user@dummy/master narrow \ > --include dir1 \ > --include dir2 \ > --exclude dir1/dirA \ > --exclude dir1/dirB \ > --exclude dir2/dirA \ > --exclude dir2/dirB requesting all changes adding changesets adding manifests adding file changes added 6 changesets with 4 changes to 4 files new changesets *:* (glob) updating to branch default 4 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd narrow $ hg tracked I path:dir1 I path:dir2 X path:dir1/dirA X path:dir1/dirB X path:dir2/dirA X path:dir2/dirB $ hg manifest -r tip dir1/bar dir1/dirA/bar dir1/dirA/foo dir1/dirB/bar dir1/dirB/foo dir1/foo dir2/bar dir2/dirA/bar dir2/dirA/foo dir2/dirB/bar dir2/dirB/foo dir2/foo root $ find * | sort dir1 dir1/bar dir1/foo dir2 dir2/bar dir2/foo $ hg log -G -T '{rev} {node|short}{if(ellipsis, "...")} {files}\n' @ 5 c87ca422d521... dir1/dirA/foo | o 4 33227af02764 dir2/bar | o 3 5e1f9d8d7c69 dir2/foo | o 2 594bc4b13d4a dir1/bar | o 1 47f480a08324 dir1/foo | o 0 2a4f0c3b67da... root widen the narrow checkout $ hg tracked --removeexclude dir1/dirA comparing with ssh://user@dummy/master searching for changes saved backup bundle to $TESTTMP/narrow/.hg/strip-backup/*-widen.hg (glob) adding changesets adding manifests adding file changes added 9 changesets with 6 changes to 10 files $ hg tracked I path:dir1 I path:dir2 X path:dir1/dirB X path:dir2/dirA X path:dir2/dirB $ find * | sort dir1 dir1/bar dir1/dirA dir1/dirA/bar dir1/dirA/foo dir1/foo dir2 dir2/bar dir2/foo #if execbit $ test -x dir1/dirA/foo && echo executable executable $ test -x dir1/dirA/bar || echo not executable not executable #endif $ hg log -G -T '{rev} {node|short}{if(ellipsis, "...")} {files}\n' @ 8 c87ca422d521 dir1/dirA/foo | o 7 951b8a83924e... dir2/dirB/bar | o 6 623466a5f475 dir1/dirA/bar | o 5 06ff3a5be997 dir1/dirA/foo | o 4 33227af02764 dir2/bar | o 3 5e1f9d8d7c69 dir2/foo | o 2 594bc4b13d4a dir1/bar | o 1 47f480a08324 dir1/foo | o 0 2a4f0c3b67da... root widen narrow spec again, but exclude a file in previously included spec $ hg tracked --removeexclude dir2/dirB --addexclude dir1/dirA/bar comparing with ssh://user@dummy/master searching for changes looking for local changes to affected paths deleting data/dir1/dirA/bar.i (reporevlogstore !) deleting data/dir1/dirA/bar/0eca1d0cbdaea4651d1d04d71976a6d2d9bfaae5 (reposimplestore !) deleting data/dir1/dirA/bar/index (reposimplestore !) deleting unwanted files from working copy saved backup bundle to $TESTTMP/narrow/.hg/strip-backup/*-widen.hg (glob) adding changesets adding manifests adding file changes added 11 changesets with 7 changes to 12 files $ hg tracked I path:dir1 I path:dir2 X path:dir1/dirA/bar X path:dir1/dirB X path:dir2/dirA $ find * | sort dir1 dir1/bar dir1/dirA dir1/dirA/foo dir1/foo dir2 dir2/bar dir2/dirB dir2/dirB/bar dir2/dirB/foo dir2/foo $ hg log -G -T '{rev} {node|short}{if(ellipsis, "...")} {files}\n' @ 10 c87ca422d521 dir1/dirA/foo | o 9 951b8a83924e dir2/dirB/bar | o 8 01ae5a51b563 dir2/dirB/foo | o 7 5eababdf0ac5... dir2/dirA/bar | o 6 623466a5f475... dir1/dirA/bar | o 5 06ff3a5be997 dir1/dirA/foo | o 4 33227af02764 dir2/bar | o 3 5e1f9d8d7c69 dir2/foo | o 2 594bc4b13d4a dir1/bar | o 1 47f480a08324 dir1/foo | o 0 2a4f0c3b67da... root widen narrow spec yet again, excluding a directory in previous spec $ hg tracked --removeexclude dir2/dirA --addexclude dir1/dirA comparing with ssh://user@dummy/master searching for changes looking for local changes to affected paths deleting data/dir1/dirA/foo.i (reporevlogstore !) deleting data/dir1/dirA/foo/162caeb3d55dceb1fee793aa631ac8c73fcb8b5e (reposimplestore !) deleting data/dir1/dirA/foo/index (reposimplestore !) deleting unwanted files from working copy saved backup bundle to $TESTTMP/narrow/.hg/strip-backup/*-widen.hg (glob) adding changesets adding manifests adding file changes added 13 changesets with 8 changes to 14 files $ hg tracked I path:dir1 I path:dir2 X path:dir1/dirA X path:dir1/dirA/bar X path:dir1/dirB $ find * | sort dir1 dir1/bar dir1/foo dir2 dir2/bar dir2/dirA dir2/dirA/bar dir2/dirA/foo dir2/dirB dir2/dirB/bar dir2/dirB/foo dir2/foo $ hg log -G -T '{rev} {node|short}{if(ellipsis, "...")} {files}\n' @ 12 c87ca422d521... dir1/dirA/foo | o 11 951b8a83924e dir2/dirB/bar | o 10 01ae5a51b563 dir2/dirB/foo | o 9 5eababdf0ac5 dir2/dirA/bar | o 8 99d690663739 dir2/dirA/foo | o 7 8e80155d5445... dir1/dirB/bar | o 6 623466a5f475... dir1/dirA/bar | o 5 06ff3a5be997... dir1/dirA/foo | o 4 33227af02764 dir2/bar | o 3 5e1f9d8d7c69 dir2/foo | o 2 594bc4b13d4a dir1/bar | o 1 47f480a08324 dir1/foo | o 0 2a4f0c3b67da... root include a directory that was previously explicitly excluded $ hg tracked --removeexclude dir1/dirA comparing with ssh://user@dummy/master searching for changes saved backup bundle to $TESTTMP/narrow/.hg/strip-backup/*-widen.hg (glob) adding changesets adding manifests adding file changes added 13 changesets with 9 changes to 17 files $ hg tracked I path:dir1 I path:dir2 X path:dir1/dirA/bar X path:dir1/dirB $ find * | sort dir1 dir1/bar dir1/dirA dir1/dirA/foo dir1/foo dir2 dir2/bar dir2/dirA dir2/dirA/bar dir2/dirA/foo dir2/dirB dir2/dirB/bar dir2/dirB/foo dir2/foo $ hg log -G -T '{rev} {node|short}{if(ellipsis, "...")} {files}\n' @ 12 c87ca422d521 dir1/dirA/foo | o 11 951b8a83924e dir2/dirB/bar | o 10 01ae5a51b563 dir2/dirB/foo | o 9 5eababdf0ac5 dir2/dirA/bar | o 8 99d690663739 dir2/dirA/foo | o 7 8e80155d5445... dir1/dirB/bar | o 6 623466a5f475... dir1/dirA/bar | o 5 06ff3a5be997 dir1/dirA/foo | o 4 33227af02764 dir2/bar | o 3 5e1f9d8d7c69 dir2/foo | o 2 594bc4b13d4a dir1/bar | o 1 47f480a08324 dir1/foo | o 0 2a4f0c3b67da... root $ cd .. clone a narrow portion of the master, such that we can widen it later $ hg clone --narrow ssh://user@dummy/master narrow2 --include dir1/dirA requesting all changes adding changesets adding manifests adding file changes added 5 changesets with 2 changes to 2 files new changesets *:* (glob) updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd narrow2 $ find * | sort dir1 dir1/dirA dir1/dirA/bar dir1/dirA/foo $ hg tracked --addinclude dir1 comparing with ssh://user@dummy/master searching for changes saved backup bundle to $TESTTMP/narrow2/.hg/strip-backup/*-widen.hg (glob) adding changesets adding manifests adding file changes added 10 changesets with 6 changes to 8 files $ find * | sort dir1 dir1/bar dir1/dirA dir1/dirA/bar dir1/dirA/foo dir1/dirB dir1/dirB/bar dir1/dirB/foo dir1/foo $ hg log -G -T '{rev} {node|short}{if(ellipsis, "...")} {files}\n' @ 9 c87ca422d521 dir1/dirA/foo | o 8 951b8a83924e... dir2/dirB/bar | o 7 8e80155d5445 dir1/dirB/bar | o 6 406760310428 dir1/dirB/foo | o 5 623466a5f475 dir1/dirA/bar | o 4 06ff3a5be997 dir1/dirA/foo | o 3 33227af02764... dir2/bar | o 2 594bc4b13d4a dir1/bar | o 1 47f480a08324 dir1/foo | o 0 2a4f0c3b67da... root Illegal patterns are rejected $ hg tracked --addinclude glob:** abort: invalid prefix on narrow pattern: glob:** (narrow patterns must begin with one of the following: path:, rootfilesin:) [255] $ hg tracked --addexclude set:ignored abort: invalid prefix on narrow pattern: set:ignored (narrow patterns must begin with one of the following: path:, rootfilesin:) [255] $ cat .hg/store/narrowspec [include] path:dir1 path:dir1/dirA [exclude] $ cat > .hg/store/narrowspec << EOF > [include] > glob:** > EOF $ hg tracked abort: invalid prefix on narrow pattern: glob:** (narrow patterns must begin with one of the following: path:, rootfilesin:) [255] $ cat > .hg/store/narrowspec << EOF > [include] > path:. > [exclude] > set:ignored > EOF $ hg tracked abort: invalid prefix on narrow pattern: set:ignored (narrow patterns must begin with one of the following: path:, rootfilesin:) [255]