Mercurial > hg
view contrib/dirstatenonnormalcheck.py @ 30758:76104a4899ad
commands: config option to control bundle compression level
Currently, bundle compression uses the default compression level
for the active compression engine. The default compression level
is tuned as a compromise between speed and size.
Some scenarios may call for a different compression level. For
example, with clone bundles, bundles are generated once and used
several times. Since the cost to generate is paid infrequently,
server operators may wish to trade extra CPU time for better
compression ratios.
This patch introduces an experimental and undocumented config
option to control the bundle compression level. As the inline
comment says, this approach is a bit hacky. I'd prefer for
the compression level to be encoded in the bundle spec. e.g.
"zstd-v2;complevel=15." However, given that the 4.1 freeze is
imminent, I'm not comfortable implementing this user-facing
change without much time to test and consider the implications.
So, we're going with the quick and dirty solution for now.
Having this option in the 4.1 release will enable Mozilla to
easily produce and test zlib and zstd bundles with non-default
compression levels in production. This will help drive future
development of the feature and zstd integration with Mercurial.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Tue, 10 Jan 2017 11:20:32 -0800 |
parents | 3fd94f603190 |
children | 60927b19ed65 |
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# dirstatenonnormalcheck.py - extension to check the consistency of the # dirstate's non-normal map # # For most operations on dirstate, this extensions checks that the nonnormalset # contains the right entries. # It compares the nonnormal file to a nonnormalset built from the map of all # the files in the dirstate to check that they contain the same files. from __future__ import absolute_import from mercurial import ( dirstate, extensions, ) def nonnormalentries(dmap): """Compute nonnormal entries from dirstate's dmap""" res = set() for f, e in dmap.iteritems(): if e[0] != 'n' or e[3] == -1: res.add(f) return res def checkconsistency(ui, orig, dmap, _nonnormalset, label): """Compute nonnormalset from dmap, check that it matches _nonnormalset""" nonnormalcomputedmap = nonnormalentries(dmap) if _nonnormalset != nonnormalcomputedmap: ui.develwarn("%s call to %s\n" % (label, orig), config='dirstate') ui.develwarn("inconsistency in nonnormalset\n", config='dirstate') ui.develwarn("[nonnormalset] %s\n" % _nonnormalset, config='dirstate') ui.develwarn("[map] %s\n" % nonnormalcomputedmap, config='dirstate') def _checkdirstate(orig, self, arg): """Check nonnormal set consistency before and after the call to orig""" checkconsistency(self._ui, orig, self._map, self._nonnormalset, "before") r = orig(self, arg) checkconsistency(self._ui, orig, self._map, self._nonnormalset, "after") return r def extsetup(ui): """Wrap functions modifying dirstate to check nonnormalset consistency""" dirstatecl = dirstate.dirstate devel = ui.configbool('devel', 'all-warnings') paranoid = ui.configbool('experimental', 'nonnormalparanoidcheck') if devel: extensions.wrapfunction(dirstatecl, '_writedirstate', _checkdirstate) if paranoid: # We don't do all these checks when paranoid is disable as it would # make the extension run very slowly on large repos extensions.wrapfunction(dirstatecl, 'normallookup', _checkdirstate) extensions.wrapfunction(dirstatecl, 'otherparent', _checkdirstate) extensions.wrapfunction(dirstatecl, 'normal', _checkdirstate) extensions.wrapfunction(dirstatecl, 'write', _checkdirstate) extensions.wrapfunction(dirstatecl, 'add', _checkdirstate) extensions.wrapfunction(dirstatecl, 'remove', _checkdirstate) extensions.wrapfunction(dirstatecl, 'merge', _checkdirstate) extensions.wrapfunction(dirstatecl, 'drop', _checkdirstate)