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hgweb: config option to control zlib compression level...
hgweb: config option to control zlib compression level Before this patch, the HTTP transport protocol would always zlib compress certain responses (notably "getbundle" wire protocol commands) at zlib compression level 6. zlib can be a massive CPU resource sink for servers. Some server operators may wish to reduce server-side CPU requirements while requiring more bandwidth. This is common on corporate intranets, for example. Others may wish to use more CPU but reduce bandwidth. This patch introduces a config option to allow server operators to control the zlib compression level. On the "mozilla-unified" generaldelta repository, setting this value to "0" (disable compression) results in server-side CPU utilization for a `hg clone` going from ~180s to ~124s CPU time on my i7-6700K. A level of "1" (which increases the transfer size from ~1,074 MB at level 6 to ~1,222 MB) utilizes ~132s CPU time.
Brodie Rao - - Load All Authors

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r12083:ebfc4692 stable
r29748:5e236569 default
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diffs.txt
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Mercurial's default format for showing changes between two versions of
a file is compatible with the unified format of GNU diff, which can be
used by GNU patch and many other standard tools.
While this standard format is often enough, it does not encode the
following information:
- executable status and other permission bits
- copy or rename information
- changes in binary files
- creation or deletion of empty files
Mercurial also supports the extended diff format from the git VCS
which addresses these limitations. The git diff format is not produced
by default because a few widespread tools still do not understand this
format.
This means that when generating diffs from a Mercurial repository
(e.g. with :hg:`export`), you should be careful about things like file
copies and renames or other things mentioned above, because when
applying a standard diff to a different repository, this extra
information is lost. Mercurial's internal operations (like push and
pull) are not affected by this, because they use an internal binary
format for communicating changes.
To make Mercurial produce the git extended diff format, use the --git
option available for many commands, or set 'git = True' in the [diff]
section of your configuration file. You do not need to set this option
when importing diffs in this format or using them in the mq extension.