Mercurial > hg
view tests/test-merge-types.t @ 42044:bb271ec2fbfb
compression: introduce a `storage.revlog.zstd.level` configuration
This option control the zstd compression level used when compressing revlog
chunk. The usage of zstd for revlog compression has not graduated from
experimental yet, but we intend to fix that soon.
The option name for the compression level is more straight forward to pick, so
this changesets comes first. Having a dedicated option for each compression
engine is useful because they don't support the same range of values.
I ran the same measurement as for the zlib compression level (in the parent
changesets). The variation in repository size is stay mostly in the same (small)
range. The "read/write" performance see smallish variation, but are overall much
better than zlib. Write performance show the same tend of having better write
performance for when reaching high-end compression.
Again, we don't intend to change the default zstd compression level (currently:
3) in this series. However this is worth investigating in the future.
The Performance comparison of zlib vs zstd is quite impressive. The repository
size stay in the same range, but the performance are much better in all
situations.
Comparison summary
==================
We are looking at:
- performance range for zlib
- performance range for zstd
- comparison of default zstd (level-3) to default zlib (level 6)
- comparison of the slowest zstd time to the fastest zlib time
Read performance:
-----------------
| zlib | zstd | cmp | f2s
mercurial | 0.170159 - 0.189219 | 0.144127 - 0.149624 | 80% | 88%
pypy | 2.679217 - 2.768691 | 1.532317 - 1.705044 | 60% | 63%
netbeans | 122.477027 - 141.620281 | 72.996346 - 89.731560 | 58% | 73%
mozilla | 147.867662 - 170.572118 | 91.700995 - 105.853099 | 56% | 71%
Write performance:
------------------
| zlib | zstd | cmp | f2s
mercurial | 53.250304 - 56.2936129 | 40.877025 - 45.677286 | 75% | 86%
pypy | 460.721984 - 476.589918 | 270.545409 - 301.002219 | 63% | 65%
netbeans | 520.560316 - 715.930400 | 370.356311 - 428.329652 | 55% | 82%
mozilla | 739.803002 - 987.056093 | 505.152906 - 591.930683 | 57% | 80%
Raw data
--------
repo alg lvl .hg/store size 00manifest.d read write
mercurial zlib 1 49,402,813 5,963,475 0.170159 53.250304
mercurial zlib 6 47,197,397 5,875,730 0.182820 56.264320
mercurial zlib 9 47,121,596 5,849,781 0.189219 56.293612
mercurial zstd 1 49,737,084 5,966,355 0.144127 40.877025
mercurial zstd 3 48,961,867 5,895,208 0.146376 42.268142
mercurial zstd 5 48,200,592 5,938,676 0.149624 43.162875
mercurial zstd 10 47,833,520 5,913,353 0.145185 44.012489
mercurial zstd 15 47,314,604 5,728,679 0.147686 45.677286
mercurial zstd 20 47,330,502 5,830,539 0.145789 45.025407
mercurial zstd 22 47,330,076 5,830,539 0.143996 44.690460
pypy zlib 1 370,830,572 28,462,425 2.679217 460.721984
pypy zlib 6 340,112,317 27,648,747 2.768691 467.537158
pypy zlib 9 338,360,736 27,639,003 2.763495 476.589918
pypy zstd 1 362,377,479 27,916,214 1.532317 270.545409
pypy zstd 3 354,137,693 27,905,988 1.686718 294.951509
pypy zstd 5 342,640,043 27,655,774 1.705044 301.002219
pypy zstd 10 334,224,327 27,164,493 1.567287 285.186239
pypy zstd 15 329,000,363 26,645,965 1.637729 299.561332
pypy zstd 20 324,534,039 26,199,547 1.526813 302.149827
pypy zstd 22 324,530,595 26,198,932 1.525718 307.821218
netbeans zlib 1 1,281,847,810 165,495,457 122.477027 520.560316
netbeans zlib 6 1,205,284,353 159,161,207 139.876147 715.930400
netbeans zlib 9 1,197,135,671 155,034,586 141.620281 678.297064
netbeans zstd 1 1,259,581,737 160,840,613 72.996346 370.356311
netbeans zstd 3 1,232,978,122 157,691,551 81.622317 396.733087
netbeans zstd 5 1,208,034,075 160,246,880 83.080549 364.342626
netbeans zstd 10 1,188,624,176 156,083,417 79.323935 403.594602
netbeans zstd 15 1,176,973,589 153,859,477 89.731560 428.329652
netbeans zstd 20 1,162,958,258 151,147,535 82.842667 392.335349
netbeans zstd 22 1,162,707,029 151,150,220 82.565695 402.840655
mozilla zlib 1 2,775,497,186 298,527,987 147.867662 751.263721
mozilla zlib 6 2,596,856,420 286,597,671 170.572118 987.056093
mozilla zlib 9 2,587,542,494 287,018,264 163.622338 739.803002
mozilla zstd 1 2,723,159,348 286,617,532 91.700995 570.042751
mozilla zstd 3 2,665,055,001 286,152,013 95.240155 561.412805
mozilla zstd 5 2,607,819,817 288,060,030 101.978048 505.152906
mozilla zstd 10 2,558,761,085 283,967,648 104.113481 497.771202
mozilla zstd 15 2,526,216,060 275,581,300 105.853099 591.930683
mozilla zstd 20 2,485,114,806 266,478,859 95.268795 576.515389
mozilla zstd 22 2,484,869,080 266,456,505 94.429282 572.785537
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Wed, 27 Mar 2019 18:35:59 +0100 |
parents | 844a40687d83 |
children | 91a0bc50b288 |
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#require symlink execbit $ tellmeabout() { > if [ -h $1 ]; then > echo $1 is a symlink: > $TESTDIR/readlink.py $1 > elif [ -x $1 ]; then > echo $1 is an executable file with content: > cat $1 > else > echo $1 is a plain file with content: > cat $1 > fi > } $ hg init test1 $ cd test1 $ echo a > a $ hg ci -Aqmadd $ chmod +x a $ hg ci -mexecutable $ hg up -q 0 $ rm a $ ln -s symlink a $ hg ci -msymlink created new head Symlink is local parent, executable is other: $ hg merge --debug searching for copies back to rev 1 resolving manifests branchmerge: True, force: False, partial: False ancestor: c334dc3be0da, local: 521a1e40188f+, remote: 3574f3e69b1c preserving a for resolve of a a: versions differ -> m (premerge) tool internal:merge (for pattern a) can't handle symlinks couldn't find merge tool hgmerge no tool found to merge a picked tool ':prompt' for a (binary False symlink True changedelete False) keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved for a? u 0 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon [1] $ tellmeabout a a is a symlink: a -> symlink $ hg resolve a --tool internal:other (no more unresolved files) $ tellmeabout a a is an executable file with content: a $ hg st M a ? a.orig Symlink is other parent, executable is local: $ hg update -C 1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg merge --debug --tool :union searching for copies back to rev 1 resolving manifests branchmerge: True, force: False, partial: False ancestor: c334dc3be0da, local: 3574f3e69b1c+, remote: 521a1e40188f preserving a for resolve of a a: versions differ -> m (premerge) picked tool ':union' for a (binary False symlink True changedelete False) merging a my a@3574f3e69b1c+ other a@521a1e40188f ancestor a@c334dc3be0da warning: internal :union cannot merge symlinks for a warning: conflicts while merging a! (edit, then use 'hg resolve --mark') 0 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon [1] $ tellmeabout a a is an executable file with content: a $ hg update -C 1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg merge --debug --tool :merge3 searching for copies back to rev 1 resolving manifests branchmerge: True, force: False, partial: False ancestor: c334dc3be0da, local: 3574f3e69b1c+, remote: 521a1e40188f preserving a for resolve of a a: versions differ -> m (premerge) picked tool ':merge3' for a (binary False symlink True changedelete False) merging a my a@3574f3e69b1c+ other a@521a1e40188f ancestor a@c334dc3be0da warning: internal :merge3 cannot merge symlinks for a warning: conflicts while merging a! (edit, then use 'hg resolve --mark') 0 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon [1] $ tellmeabout a a is an executable file with content: a $ hg update -C 1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg merge --debug --tool :merge-local searching for copies back to rev 1 resolving manifests branchmerge: True, force: False, partial: False ancestor: c334dc3be0da, local: 3574f3e69b1c+, remote: 521a1e40188f preserving a for resolve of a a: versions differ -> m (premerge) picked tool ':merge-local' for a (binary False symlink True changedelete False) merging a my a@3574f3e69b1c+ other a@521a1e40188f ancestor a@c334dc3be0da warning: internal :merge-local cannot merge symlinks for a 0 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon [1] $ tellmeabout a a is an executable file with content: a $ hg update -C 1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg merge --debug --tool :merge-other searching for copies back to rev 1 resolving manifests branchmerge: True, force: False, partial: False ancestor: c334dc3be0da, local: 3574f3e69b1c+, remote: 521a1e40188f preserving a for resolve of a a: versions differ -> m (premerge) picked tool ':merge-other' for a (binary False symlink True changedelete False) merging a my a@3574f3e69b1c+ other a@521a1e40188f ancestor a@c334dc3be0da warning: internal :merge-other cannot merge symlinks for a 0 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon [1] $ tellmeabout a a is an executable file with content: a Update to link without local change should get us a symlink (issue3316): $ hg up -C 0 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg up 1 files updated, 0 files merged, 0 files removed, 0 files unresolved updated to "521a1e40188f: symlink" 1 other heads for branch "default" $ hg st ? a.orig Update to link with local change should cause a merge prompt (issue3200): $ hg up -Cq 0 $ echo data > a $ HGMERGE= hg up -y --debug --config ui.merge= searching for copies back to rev 2 resolving manifests branchmerge: False, force: False, partial: False ancestor: c334dc3be0da, local: c334dc3be0da+, remote: 521a1e40188f preserving a for resolve of a a: versions differ -> m (premerge) (couldn't find merge tool hgmerge|tool hgmerge can't handle symlinks) (re) no tool found to merge a picked tool ':prompt' for a (binary False symlink True changedelete False) keep (l)ocal [working copy], take (o)ther [destination], or leave (u)nresolved for a? u 0 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges updated to "521a1e40188f: symlink" 1 other heads for branch "default" [1] $ hg diff --git diff --git a/a b/a old mode 120000 new mode 100644 --- a/a +++ b/a @@ -1,1 +1,1 @@ -symlink \ No newline at end of file +data Test only 'l' change - happens rarely, except when recovering from situations where that was what happened. $ hg init test2 $ cd test2 $ printf base > f $ hg ci -Aqm0 $ echo file > f $ echo content >> f $ hg ci -qm1 $ hg up -qr0 $ rm f $ ln -s base f $ hg ci -qm2 $ hg merge tool internal:merge (for pattern f) can't handle symlinks no tool found to merge f keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved for f? u 0 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon [1] $ tellmeabout f f is a symlink: f -> base $ hg up -Cqr1 $ hg merge tool internal:merge (for pattern f) can't handle symlinks no tool found to merge f keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved for f? u 0 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon [1] $ tellmeabout f f is a plain file with content: file content $ cd .. Test removed 'x' flag merged with change to symlink $ hg init test3 $ cd test3 $ echo f > f $ chmod +x f $ hg ci -Aqm0 $ chmod -x f $ hg ci -qm1 $ hg up -qr0 $ rm f $ ln -s dangling f $ hg ci -qm2 $ hg merge tool internal:merge (for pattern f) can't handle symlinks no tool found to merge f keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved for f? u 0 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon [1] $ tellmeabout f f is a symlink: f -> dangling $ hg up -Cqr1 $ hg merge tool internal:merge (for pattern f) can't handle symlinks no tool found to merge f keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved for f? u 0 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon [1] $ tellmeabout f f is a plain file with content: f Test removed 'x' flag merged with content change - both ways $ hg up -Cqr0 $ echo change > f $ hg ci -qm3 $ hg merge -r1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ tellmeabout f f is a plain file with content: change $ hg up -qCr1 $ hg merge -r3 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ tellmeabout f f is a plain file with content: change $ cd .. Test merge with no common ancestor: a: just different b: x vs -, different (cannot calculate x, cannot ask merge tool) c: x vs -, same (cannot calculate x, merge tool is no good) d: x vs l, different e: x vs l, same f: - vs l, different g: - vs l, same h: l vs l, different (where same means the filelog entry is shared and there thus is an ancestor!) $ hg init test4 $ cd test4 $ echo 0 > 0 $ hg ci -Aqm0 $ echo 1 > a $ echo 1 > b $ chmod +x b $ echo 1 > bx $ chmod +x bx $ echo x > c $ chmod +x c $ echo 1 > d $ chmod +x d $ printf x > e $ chmod +x e $ echo 1 > f $ printf x > g $ ln -s 1 h $ hg ci -qAm1 $ hg up -qr0 $ echo 2 > a $ echo 2 > b $ echo 2 > bx $ chmod +x bx $ echo x > c $ ln -s 2 d $ ln -s x e $ ln -s 2 f $ ln -s x g $ ln -s 2 h $ hg ci -Aqm2 $ hg merge merging a warning: cannot merge flags for b without common ancestor - keeping local flags merging b merging bx warning: cannot merge flags for c without common ancestor - keeping local flags tool internal:merge (for pattern d) can't handle symlinks no tool found to merge d keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved for d? u tool internal:merge (for pattern f) can't handle symlinks no tool found to merge f keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved for f? u tool internal:merge (for pattern h) can't handle symlinks no tool found to merge h keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved for h? u warning: conflicts while merging a! (edit, then use 'hg resolve --mark') warning: conflicts while merging b! (edit, then use 'hg resolve --mark') warning: conflicts while merging bx! (edit, then use 'hg resolve --mark') 3 files updated, 0 files merged, 0 files removed, 6 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon [1] $ hg resolve -l U a U b U bx U d U f U h $ tellmeabout a a is a plain file with content: <<<<<<< working copy: 0c617753b41b - test: 2 2 ======= 1 >>>>>>> merge rev: 2e60aa20b912 - test: 1 $ tellmeabout b b is a plain file with content: <<<<<<< working copy: 0c617753b41b - test: 2 2 ======= 1 >>>>>>> merge rev: 2e60aa20b912 - test: 1 $ tellmeabout c c is a plain file with content: x $ tellmeabout d d is a symlink: d -> 2 $ tellmeabout e e is a symlink: e -> x $ tellmeabout f f is a symlink: f -> 2 $ tellmeabout g g is a symlink: g -> x $ tellmeabout h h is a symlink: h -> 2 $ hg up -Cqr1 $ hg merge merging a warning: cannot merge flags for b without common ancestor - keeping local flags merging b merging bx warning: cannot merge flags for c without common ancestor - keeping local flags tool internal:merge (for pattern d) can't handle symlinks no tool found to merge d keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved for d? u tool internal:merge (for pattern f) can't handle symlinks no tool found to merge f keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved for f? u tool internal:merge (for pattern h) can't handle symlinks no tool found to merge h keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved for h? u warning: conflicts while merging a! (edit, then use 'hg resolve --mark') warning: conflicts while merging b! (edit, then use 'hg resolve --mark') warning: conflicts while merging bx! (edit, then use 'hg resolve --mark') 3 files updated, 0 files merged, 0 files removed, 6 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon [1] $ tellmeabout a a is a plain file with content: <<<<<<< working copy: 2e60aa20b912 - test: 1 1 ======= 2 >>>>>>> merge rev: 0c617753b41b - test: 2 $ tellmeabout b b is an executable file with content: <<<<<<< working copy: 2e60aa20b912 - test: 1 1 ======= 2 >>>>>>> merge rev: 0c617753b41b - test: 2 $ tellmeabout c c is an executable file with content: x $ tellmeabout d d is an executable file with content: 1 $ tellmeabout e e is an executable file with content: x (no-eol) $ tellmeabout f f is a plain file with content: 1 $ tellmeabout g g is a plain file with content: x (no-eol) $ tellmeabout h h is a symlink: h -> 1 $ cd ..