Mercurial > hg
view tests/test-githelp.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 | cfa93fbbe9b4 |
children | eddff539f5be |
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$ cat >> $HGRCPATH << EOF > [extensions] > githelp = > EOF $ hg init repo $ cd repo $ echo foo > test_file $ mkdir dir $ echo foo > dir/file $ echo foo > removed_file $ echo foo > deleted_file $ hg add -q . $ hg commit -m 'bar' $ hg bookmark both $ touch both $ touch untracked_file $ hg remove removed_file $ rm deleted_file githelp on a single command should succeed $ hg githelp -- commit hg commit $ hg githelp -- git commit hg commit githelp should fail nicely if we don't give it arguments $ hg githelp abort: missing git command - usage: hg githelp -- <git command> [255] $ hg githelp -- git abort: missing git command - usage: hg githelp -- <git command> [255] githelp on a command with options should succeed $ hg githelp -- commit -pm "abc" hg commit --interactive -m 'abc' githelp on a command with standalone unrecognized option should succeed with warning $ hg githelp -- commit -p -v ignoring unknown option -v hg commit --interactive githelp on a command with unrecognized option packed with other options should fail with error $ hg githelp -- commit -pv abort: unknown option 'v' packed with other options (please try passing the option as its own flag: -v) [255] githelp for git rebase --skip $ hg githelp -- git rebase --skip hg revert --all -r . hg rebase --continue githelp for git commit --amend (hg commit --amend pulls up an editor) $ hg githelp -- commit --amend hg commit --amend githelp for git commit --amend --no-edit (hg amend does not pull up an editor) $ hg githelp -- commit --amend --no-edit hg amend githelp for git checkout -- . (checking out a directory) $ hg githelp -- checkout -- . note: use --no-backup to avoid creating .orig files hg revert . githelp for git checkout "HEAD^" (should still work to pass a rev) $ hg githelp -- checkout "HEAD^" hg update .^ githelp checkout: args after -- should be treated as paths no matter what $ hg githelp -- checkout -- HEAD note: use --no-backup to avoid creating .orig files hg revert HEAD githelp for git checkout with rev and path $ hg githelp -- checkout "HEAD^" -- file.txt note: use --no-backup to avoid creating .orig files hg revert -r .^ file.txt githelp for git with rev and path, without separator $ hg githelp -- checkout "HEAD^" file.txt note: use --no-backup to avoid creating .orig files hg revert -r .^ file.txt githelp for checkout with a file as first argument $ hg githelp -- checkout test_file note: use --no-backup to avoid creating .orig files hg revert test_file githelp for checkout with a removed file as first argument $ hg githelp -- checkout removed_file note: use --no-backup to avoid creating .orig files hg revert removed_file githelp for checkout with a deleted file as first argument $ hg githelp -- checkout deleted_file note: use --no-backup to avoid creating .orig files hg revert deleted_file githelp for checkout with a untracked file as first argument $ hg githelp -- checkout untracked_file note: use --no-backup to avoid creating .orig files hg revert untracked_file githelp for checkout with a directory as first argument $ hg githelp -- checkout dir note: use --no-backup to avoid creating .orig files hg revert dir githelp for checkout when not in repo root $ cd dir $ hg githelp -- checkout file note: use --no-backup to avoid creating .orig files hg revert file $ cd .. githelp for checkout with an argument that is both a file and a revision $ hg githelp -- checkout both hg update both githelp for checkout with the -p option $ hg githelp -- git checkout -p xyz hg revert -i -r xyz $ hg githelp -- git checkout -p xyz -- abc note: use --no-backup to avoid creating .orig files hg revert -i -r xyz abc githelp for checkout with the -f option and a rev $ hg githelp -- git checkout -f xyz hg update -C xyz $ hg githelp -- git checkout --force xyz hg update -C xyz githelp for checkout with the -f option without an arg $ hg githelp -- git checkout -f hg revert --all $ hg githelp -- git checkout --force hg revert --all githelp for grep with pattern and path $ hg githelp -- grep shrubbery flib/intern/ hg grep shrubbery flib/intern/ githelp for reset, checking ~ in git becomes ~1 in mercurial $ hg githelp -- reset HEAD~ hg update .~1 $ hg githelp -- reset "HEAD^" hg update .^ $ hg githelp -- reset HEAD~3 hg update .~3 $ hg githelp -- reset --mixed HEAD note: --mixed has no meaning since Mercurial has no staging area hg update . $ hg githelp -- reset --soft HEAD note: --soft has no meaning since Mercurial has no staging area hg update . $ hg githelp -- reset --hard HEAD hg update --clean . githelp for git show --name-status $ hg githelp -- git show --name-status hg log --style status -r . githelp for git show --pretty=format: --name-status $ hg githelp -- git show --pretty=format: --name-status hg status --change . githelp for show with no arguments $ hg githelp -- show hg export githelp for show with a path $ hg githelp -- show test_file hg cat test_file githelp for show with not a path: $ hg githelp -- show rev hg export rev githelp for show with many arguments $ hg githelp -- show argone argtwo hg export argone argtwo $ hg githelp -- show test_file argone argtwo hg cat test_file argone argtwo githelp for show with --unified options $ hg githelp -- show --unified=10 hg export --config diff.unified=10 $ hg githelp -- show -U100 hg export --config diff.unified=100 githelp for show with a path and --unified $ hg githelp -- show -U20 test_file hg cat test_file --config diff.unified=20 githelp for stash drop without name $ hg githelp -- git stash drop hg shelve -d <shelve name> githelp for stash drop with name $ hg githelp -- git stash drop xyz hg shelve -d xyz githelp for whatchanged should show deprecated message $ hg githelp -- whatchanged -p this command has been deprecated in the git project, thus isn't supported by this tool githelp for git branch -m renaming $ hg githelp -- git branch -m old new hg bookmark -m old new When the old name is omitted, git branch -m new renames the current branch. $ hg githelp -- git branch -m new hg bookmark -m `hg log -T"{activebookmark}" -r .` new Branch deletion in git strips commits $ hg githelp -- git branch -d hg strip -B $ hg githelp -- git branch -d feature hg strip -B feature -B $ hg githelp -- git branch --delete experiment1 experiment2 hg strip -B experiment1 -B experiment2 -B githelp for reuse message using the shorthand $ hg githelp -- git commit -C deadbeef hg commit -M deadbeef githelp for reuse message using the the long version $ hg githelp -- git commit --reuse-message deadbeef hg commit -M deadbeef githelp for apply with no options $ hg githelp -- apply hg import --no-commit githelp for apply with directory strip custom $ hg githelp -- apply -p 5 hg import --no-commit -p 5 git merge-base $ hg githelp -- git merge-base --is-ancestor ignoring unknown option --is-ancestor note: ancestors() is part of the revset language (learn more about revsets with 'hg help revsets') hg log -T '{node}\n' -r 'ancestor(A,B)' githelp for git blame $ hg githelp -- git blame hg annotate -udl githelp for add $ hg githelp -- git add hg add $ hg githelp -- git add -p note: Mercurial will commit when complete, as there is no staging area in Mercurial hg commit --interactive $ hg githelp -- git add --all note: use hg addremove to remove files that have been deleted hg add githelp for reflog $ hg githelp -- git reflog hg journal note: in hg commits can be deleted from repo but we always have backups $ hg githelp -- git reflog --all hg journal --all note: in hg commits can be deleted from repo but we always have backups