Mercurial > hg
view hgext/sparse.py @ 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 | f9344d04909e |
children | 87a34c767384 |
line wrap: on
line source
# sparse.py - allow sparse checkouts of the working directory # # Copyright 2014 Facebook, Inc. # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. """allow sparse checkouts of the working directory (EXPERIMENTAL) (This extension is not yet protected by backwards compatibility guarantees. Any aspect may break in future releases until this notice is removed.) This extension allows the working directory to only consist of a subset of files for the revision. This allows specific files or directories to be explicitly included or excluded. Many repository operations have performance proportional to the number of files in the working directory. So only realizing a subset of files in the working directory can improve performance. Sparse Config Files ------------------- The set of files that are part of a sparse checkout are defined by a sparse config file. The file defines 3 things: includes (files to include in the sparse checkout), excludes (files to exclude from the sparse checkout), and profiles (links to other config files). The file format is newline delimited. Empty lines and lines beginning with ``#`` are ignored. Lines beginning with ``%include `` denote another sparse config file to include. e.g. ``%include tests.sparse``. The filename is relative to the repository root. The special lines ``[include]`` and ``[exclude]`` denote the section for includes and excludes that follow, respectively. It is illegal to have ``[include]`` after ``[exclude]``. Non-special lines resemble file patterns to be added to either includes or excludes. The syntax of these lines is documented by :hg:`help patterns`. Patterns are interpreted as ``glob:`` by default and match against the root of the repository. Exclusion patterns take precedence over inclusion patterns. So even if a file is explicitly included, an ``[exclude]`` entry can remove it. For example, say you have a repository with 3 directories, ``frontend/``, ``backend/``, and ``tools/``. ``frontend/`` and ``backend/`` correspond to different projects and it is uncommon for someone working on one to need the files for the other. But ``tools/`` contains files shared between both projects. Your sparse config files may resemble:: # frontend.sparse frontend/** tools/** # backend.sparse backend/** tools/** Say the backend grows in size. Or there's a directory with thousands of files you wish to exclude. You can modify the profile to exclude certain files:: [include] backend/** tools/** [exclude] tools/tests/** """ from __future__ import absolute_import from mercurial.i18n import _ from mercurial import ( commands, dirstate, error, extensions, hg, logcmdutil, match as matchmod, pycompat, registrar, sparse, util, ) # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should # be specifying the version(s) of Mercurial they are tested with, or # leave the attribute unspecified. testedwith = 'ships-with-hg-core' cmdtable = {} command = registrar.command(cmdtable) def extsetup(ui): sparse.enabled = True _setupclone(ui) _setuplog(ui) _setupadd(ui) _setupdirstate(ui) def replacefilecache(cls, propname, replacement): """Replace a filecache property with a new class. This allows changing the cache invalidation condition.""" origcls = cls assert callable(replacement) while cls is not object: if propname in cls.__dict__: orig = cls.__dict__[propname] setattr(cls, propname, replacement(orig)) break cls = cls.__bases__[0] if cls is object: raise AttributeError(_("type '%s' has no property '%s'") % (origcls, propname)) def _setuplog(ui): entry = commands.table['log|history'] entry[1].append(('', 'sparse', None, "limit to changesets affecting the sparse checkout")) def _initialrevs(orig, repo, opts): revs = orig(repo, opts) if opts.get('sparse'): sparsematch = sparse.matcher(repo) def ctxmatch(rev): ctx = repo[rev] return any(f for f in ctx.files() if sparsematch(f)) revs = revs.filter(ctxmatch) return revs extensions.wrapfunction(logcmdutil, '_initialrevs', _initialrevs) def _clonesparsecmd(orig, ui, repo, *args, **opts): include_pat = opts.get(r'include') exclude_pat = opts.get(r'exclude') enableprofile_pat = opts.get(r'enable_profile') narrow_pat = opts.get(r'narrow') include = exclude = enableprofile = False if include_pat: pat = include_pat include = True if exclude_pat: pat = exclude_pat exclude = True if enableprofile_pat: pat = enableprofile_pat enableprofile = True if sum([include, exclude, enableprofile]) > 1: raise error.Abort(_("too many flags specified.")) # if --narrow is passed, it means they are includes and excludes for narrow # clone if not narrow_pat and (include or exclude or enableprofile): def clonesparse(orig, self, node, overwrite, *args, **kwargs): sparse.updateconfig(self.unfiltered(), pat, {}, include=include, exclude=exclude, enableprofile=enableprofile, usereporootpaths=True) return orig(self, node, overwrite, *args, **kwargs) extensions.wrapfunction(hg, 'updaterepo', clonesparse) return orig(ui, repo, *args, **opts) def _setupclone(ui): entry = commands.table['clone'] entry[1].append(('', 'enable-profile', [], 'enable a sparse profile')) entry[1].append(('', 'include', [], 'include sparse pattern')) entry[1].append(('', 'exclude', [], 'exclude sparse pattern')) extensions.wrapcommand(commands.table, 'clone', _clonesparsecmd) def _setupadd(ui): entry = commands.table['add'] entry[1].append(('s', 'sparse', None, 'also include directories of added files in sparse config')) def _add(orig, ui, repo, *pats, **opts): if opts.get(r'sparse'): dirs = set() for pat in pats: dirname, basename = util.split(pat) dirs.add(dirname) sparse.updateconfig(repo, list(dirs), opts, include=True) return orig(ui, repo, *pats, **opts) extensions.wrapcommand(commands.table, 'add', _add) def _setupdirstate(ui): """Modify the dirstate to prevent stat'ing excluded files, and to prevent modifications to files outside the checkout. """ def walk(orig, self, match, subrepos, unknown, ignored, full=True): # hack to not exclude explicitly-specified paths so that they can # be warned later on e.g. dirstate.add() em = matchmod.exact(match.files()) sm = matchmod.unionmatcher([self._sparsematcher, em]) match = matchmod.intersectmatchers(match, sm) return orig(self, match, subrepos, unknown, ignored, full) extensions.wrapfunction(dirstate.dirstate, 'walk', walk) # dirstate.rebuild should not add non-matching files def _rebuild(orig, self, parent, allfiles, changedfiles=None): matcher = self._sparsematcher if not matcher.always(): allfiles = [f for f in allfiles if matcher(f)] if changedfiles: changedfiles = [f for f in changedfiles if matcher(f)] if changedfiles is not None: # In _rebuild, these files will be deleted from the dirstate # when they are not found to be in allfiles dirstatefilestoremove = set(f for f in self if not matcher(f)) changedfiles = dirstatefilestoremove.union(changedfiles) return orig(self, parent, allfiles, changedfiles) extensions.wrapfunction(dirstate.dirstate, 'rebuild', _rebuild) # Prevent adding files that are outside the sparse checkout editfuncs = ['normal', 'add', 'normallookup', 'copy', 'remove', 'merge'] hint = _('include file with `hg debugsparse --include <pattern>` or use ' + '`hg add -s <file>` to include file directory while adding') for func in editfuncs: def _wrapper(orig, self, *args): sparsematch = self._sparsematcher if not sparsematch.always(): for f in args: if (f is not None and not sparsematch(f) and f not in self): raise error.Abort(_("cannot add '%s' - it is outside " "the sparse checkout") % f, hint=hint) return orig(self, *args) extensions.wrapfunction(dirstate.dirstate, func, _wrapper) @command('debugsparse', [ ('I', 'include', False, _('include files in the sparse checkout')), ('X', 'exclude', False, _('exclude files in the sparse checkout')), ('d', 'delete', False, _('delete an include/exclude rule')), ('f', 'force', False, _('allow changing rules even with pending changes')), ('', 'enable-profile', False, _('enables the specified profile')), ('', 'disable-profile', False, _('disables the specified profile')), ('', 'import-rules', False, _('imports rules from a file')), ('', 'clear-rules', False, _('clears local include/exclude rules')), ('', 'refresh', False, _('updates the working after sparseness changes')), ('', 'reset', False, _('makes the repo full again')), ] + commands.templateopts, _('[--OPTION] PATTERN...'), helpbasic=True) def debugsparse(ui, repo, *pats, **opts): """make the current checkout sparse, or edit the existing checkout The sparse command is used to make the current checkout sparse. This means files that don't meet the sparse condition will not be written to disk, or show up in any working copy operations. It does not affect files in history in any way. Passing no arguments prints the currently applied sparse rules. --include and --exclude are used to add and remove files from the sparse checkout. The effects of adding an include or exclude rule are applied immediately. If applying the new rule would cause a file with pending changes to be added or removed, the command will fail. Pass --force to force a rule change even with pending changes (the changes on disk will be preserved). --delete removes an existing include/exclude rule. The effects are immediate. --refresh refreshes the files on disk based on the sparse rules. This is only necessary if .hg/sparse was changed by hand. --enable-profile and --disable-profile accept a path to a .hgsparse file. This allows defining sparse checkouts and tracking them inside the repository. This is useful for defining commonly used sparse checkouts for many people to use. As the profile definition changes over time, the sparse checkout will automatically be updated appropriately, depending on which changeset is checked out. Changes to .hgsparse are not applied until they have been committed. --import-rules accepts a path to a file containing rules in the .hgsparse format, allowing you to add --include, --exclude and --enable-profile rules in bulk. Like the --include, --exclude and --enable-profile switches, the changes are applied immediately. --clear-rules removes all local include and exclude rules, while leaving any enabled profiles in place. Returns 0 if editing the sparse checkout succeeds. """ opts = pycompat.byteskwargs(opts) include = opts.get('include') exclude = opts.get('exclude') force = opts.get('force') enableprofile = opts.get('enable_profile') disableprofile = opts.get('disable_profile') importrules = opts.get('import_rules') clearrules = opts.get('clear_rules') delete = opts.get('delete') refresh = opts.get('refresh') reset = opts.get('reset') count = sum([include, exclude, enableprofile, disableprofile, delete, importrules, refresh, clearrules, reset]) if count > 1: raise error.Abort(_("too many flags specified")) if count == 0: if repo.vfs.exists('sparse'): ui.status(repo.vfs.read("sparse") + "\n") temporaryincludes = sparse.readtemporaryincludes(repo) if temporaryincludes: ui.status(_("Temporarily Included Files (for merge/rebase):\n")) ui.status(("\n".join(temporaryincludes) + "\n")) return else: raise error.Abort(_('the debugsparse command is only supported on' ' sparse repositories')) if include or exclude or delete or reset or enableprofile or disableprofile: sparse.updateconfig(repo, pats, opts, include=include, exclude=exclude, reset=reset, delete=delete, enableprofile=enableprofile, disableprofile=disableprofile, force=force) if importrules: sparse.importfromfiles(repo, opts, pats, force=force) if clearrules: sparse.clearrules(repo, force=force) if refresh: try: wlock = repo.wlock() fcounts = map( len, sparse.refreshwdir(repo, repo.status(), sparse.matcher(repo), force=force)) sparse.printchanges(ui, opts, added=fcounts[0], dropped=fcounts[1], conflicting=fcounts[2]) finally: wlock.release()