Mercurial > hg
view hgext/hgk.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 | c303d65d2e34 |
children | 2372284d9457 |
line wrap: on
line source
# Minimal support for git commands on an hg repository # # Copyright 2005, 2006 Chris Mason <mason@suse.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. '''browse the repository in a graphical way The hgk extension allows browsing the history of a repository in a graphical way. It requires Tcl/Tk version 8.4 or later. (Tcl/Tk is not distributed with Mercurial.) hgk consists of two parts: a Tcl script that does the displaying and querying of information, and an extension to Mercurial named hgk.py, which provides hooks for hgk to get information. hgk can be found in the contrib directory, and the extension is shipped in the hgext repository, and needs to be enabled. The :hg:`view` command will launch the hgk Tcl script. For this command to work, hgk must be in your search path. Alternately, you can specify the path to hgk in your configuration file:: [hgk] path = /location/of/hgk hgk can make use of the extdiff extension to visualize revisions. Assuming you had already configured extdiff vdiff command, just add:: [hgk] vdiff=vdiff Revisions context menu will now display additional entries to fire vdiff on hovered and selected revisions. ''' from __future__ import absolute_import import os from mercurial.i18n import _ from mercurial.node import ( nullid, nullrev, short, ) from mercurial import ( commands, obsolete, patch, pycompat, registrar, scmutil, ) cmdtable = {} command = registrar.command(cmdtable) # 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' configtable = {} configitem = registrar.configitem(configtable) configitem('hgk', 'path', default='hgk', ) @command('debug-diff-tree', [('p', 'patch', None, _('generate patch')), ('r', 'recursive', None, _('recursive')), ('P', 'pretty', None, _('pretty')), ('s', 'stdin', None, _('stdin')), ('C', 'copy', None, _('detect copies')), ('S', 'search', "", _('search'))], ('[OPTION]... NODE1 NODE2 [FILE]...'), inferrepo=True) def difftree(ui, repo, node1=None, node2=None, *files, **opts): """diff trees from two commits""" def __difftree(repo, node1, node2, files=None): assert node2 is not None if files is None: files = [] mmap = repo[node1].manifest() mmap2 = repo[node2].manifest() m = scmutil.match(repo[node1], files) modified, added, removed = repo.status(node1, node2, m)[:3] empty = short(nullid) for f in modified: # TODO get file permissions ui.write((":100664 100664 %s %s M\t%s\t%s\n") % (short(mmap[f]), short(mmap2[f]), f, f)) for f in added: ui.write((":000000 100664 %s %s N\t%s\t%s\n") % (empty, short(mmap2[f]), f, f)) for f in removed: ui.write((":100664 000000 %s %s D\t%s\t%s\n") % (short(mmap[f]), empty, f, f)) ## while True: if opts[r'stdin']: line = ui.fin.readline() if not line: break line = line.rstrip(pycompat.oslinesep).split(b' ') node1 = line[0] if len(line) > 1: node2 = line[1] else: node2 = None node1 = repo.lookup(node1) if node2: node2 = repo.lookup(node2) else: node2 = node1 node1 = repo.changelog.parents(node1)[0] if opts[r'patch']: if opts[r'pretty']: catcommit(ui, repo, node2, "") m = scmutil.match(repo[node1], files) diffopts = patch.difffeatureopts(ui) diffopts.git = True chunks = patch.diff(repo, node1, node2, match=m, opts=diffopts) for chunk in chunks: ui.write(chunk) else: __difftree(repo, node1, node2, files=files) if not opts[r'stdin']: break def catcommit(ui, repo, n, prefix, ctx=None): nlprefix = '\n' + prefix if ctx is None: ctx = repo[n] # use ctx.node() instead ?? ui.write(("tree %s\n" % short(ctx.changeset()[0]))) for p in ctx.parents(): ui.write(("parent %s\n" % p)) date = ctx.date() description = ctx.description().replace("\0", "") ui.write(("author %s %d %d\n" % (ctx.user(), int(date[0]), date[1]))) if 'committer' in ctx.extra(): ui.write(("committer %s\n" % ctx.extra()['committer'])) ui.write(("revision %d\n" % ctx.rev())) ui.write(("branch %s\n" % ctx.branch())) if obsolete.isenabled(repo, obsolete.createmarkersopt): if ctx.obsolete(): ui.write(("obsolete\n")) ui.write(("phase %s\n\n" % ctx.phasestr())) if prefix != "": ui.write("%s%s\n" % (prefix, description.replace('\n', nlprefix).strip())) else: ui.write(description + "\n") if prefix: ui.write('\0') @command('debug-merge-base', [], _('REV REV')) def base(ui, repo, node1, node2): """output common ancestor information""" node1 = repo.lookup(node1) node2 = repo.lookup(node2) n = repo.changelog.ancestor(node1, node2) ui.write(short(n) + "\n") @command('debug-cat-file', [('s', 'stdin', None, _('stdin'))], _('[OPTION]... TYPE FILE'), inferrepo=True) def catfile(ui, repo, type=None, r=None, **opts): """cat a specific revision""" # in stdin mode, every line except the commit is prefixed with two # spaces. This way the our caller can find the commit without magic # strings # prefix = "" if opts[r'stdin']: line = ui.fin.readline() if not line: return (type, r) = line.rstrip(pycompat.oslinesep).split(b' ') prefix = " " else: if not type or not r: ui.warn(_("cat-file: type or revision not supplied\n")) commands.help_(ui, 'cat-file') while r: if type != "commit": ui.warn(_("aborting hg cat-file only understands commits\n")) return 1 n = repo.lookup(r) catcommit(ui, repo, n, prefix) if opts[r'stdin']: line = ui.fin.readline() if not line: break (type, r) = line.rstrip(pycompat.oslinesep).split(b' ') else: break # git rev-tree is a confusing thing. You can supply a number of # commit sha1s on the command line, and it walks the commit history # telling you which commits are reachable from the supplied ones via # a bitmask based on arg position. # you can specify a commit to stop at by starting the sha1 with ^ def revtree(ui, args, repo, full="tree", maxnr=0, parents=False): def chlogwalk(): count = len(repo) i = count l = [0] * 100 chunk = 100 while True: if chunk > i: chunk = i i = 0 else: i -= chunk for x in pycompat.xrange(chunk): if i + x >= count: l[chunk - x:] = [0] * (chunk - x) break if full is not None: if (i + x) in repo: l[x] = repo[i + x] l[x].changeset() # force reading else: if (i + x) in repo: l[x] = 1 for x in pycompat.xrange(chunk - 1, -1, -1): if l[x] != 0: yield (i + x, full is not None and l[x] or None) if i == 0: break # calculate and return the reachability bitmask for sha def is_reachable(ar, reachable, sha): if len(ar) == 0: return 1 mask = 0 for i in pycompat.xrange(len(ar)): if sha in reachable[i]: mask |= 1 << i return mask reachable = [] stop_sha1 = [] want_sha1 = [] count = 0 # figure out which commits they are asking for and which ones they # want us to stop on for i, arg in enumerate(args): if arg.startswith('^'): s = repo.lookup(arg[1:]) stop_sha1.append(s) want_sha1.append(s) elif arg != 'HEAD': want_sha1.append(repo.lookup(arg)) # calculate the graph for the supplied commits for i, n in enumerate(want_sha1): reachable.append(set()) visit = [n] reachable[i].add(n) while visit: n = visit.pop(0) if n in stop_sha1: continue for p in repo.changelog.parents(n): if p not in reachable[i]: reachable[i].add(p) visit.append(p) if p in stop_sha1: continue # walk the repository looking for commits that are in our # reachability graph for i, ctx in chlogwalk(): if i not in repo: continue n = repo.changelog.node(i) mask = is_reachable(want_sha1, reachable, n) if mask: parentstr = "" if parents: pp = repo.changelog.parents(n) if pp[0] != nullid: parentstr += " " + short(pp[0]) if pp[1] != nullid: parentstr += " " + short(pp[1]) if not full: ui.write("%s%s\n" % (short(n), parentstr)) elif full == "commit": ui.write("%s%s\n" % (short(n), parentstr)) catcommit(ui, repo, n, ' ', ctx) else: (p1, p2) = repo.changelog.parents(n) (h, h1, h2) = map(short, (n, p1, p2)) (i1, i2) = map(repo.changelog.rev, (p1, p2)) date = ctx.date()[0] ui.write("%s %s:%s" % (date, h, mask)) mask = is_reachable(want_sha1, reachable, p1) if i1 != nullrev and mask > 0: ui.write("%s:%s " % (h1, mask)), mask = is_reachable(want_sha1, reachable, p2) if i2 != nullrev and mask > 0: ui.write("%s:%s " % (h2, mask)) ui.write("\n") if maxnr and count >= maxnr: break count += 1 # git rev-list tries to order things by date, and has the ability to stop # at a given commit without walking the whole repo. TODO add the stop # parameter @command('debug-rev-list', [('H', 'header', None, _('header')), ('t', 'topo-order', None, _('topo-order')), ('p', 'parents', None, _('parents')), ('n', 'max-count', 0, _('max-count'))], ('[OPTION]... REV...')) def revlist(ui, repo, *revs, **opts): """print revisions""" if opts['header']: full = "commit" else: full = None copy = [x for x in revs] revtree(ui, copy, repo, full, opts[r'max_count'], opts[r'parents']) @command('view', [('l', 'limit', '', _('limit number of changes displayed'), _('NUM'))], _('[-l LIMIT] [REVRANGE]'), helpcategory=command.CATEGORY_CHANGE_NAVIGATION) def view(ui, repo, *etc, **opts): "start interactive history viewer" opts = pycompat.byteskwargs(opts) os.chdir(repo.root) optstr = ' '.join(['--%s %s' % (k, v) for k, v in opts.iteritems() if v]) if repo.filtername is None: optstr += '--hidden' cmd = ui.config("hgk", "path") + " %s %s" % (optstr, " ".join(etc)) ui.debug("running %s\n" % cmd) ui.system(cmd, blockedtag='hgk_view')