Mercurial > public > mercurial-scm > hg-stable
diff tests/test-repo-compengines.t @ 42046:4ee906aa7b60
compression: introduce an official `format.revlog-compression` option
This option supersedes the `experiment.format.compression` option. The value
currently supported are zlib (default) and zstd (if Mercurial was compiled with
zstd support).
The option gained an explicit reference to `revlog` since this is the target
usage here. Different storage methods might require different compression
strategies.
In our tests, using zstd give a significant CPU usage improvement (both
compression and decompressing) while keeping similar repository size.
Zstd as other interresting mode (dictionnary, pre-text, etc?) that are probably
worth exploring. However, just plain switching from zlib to zstd provide a large
benefit.
| author | Pierre-Yves David <pierre-yves.david@octobus.net> |
|---|---|
| date | Wed, 27 Mar 2019 18:26:54 +0100 |
| parents | bb271ec2fbfb |
| children | 10a6725dca6e |
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--- a/tests/test-repo-compengines.t Tue Apr 02 11:03:46 2019 -0700 +++ b/tests/test-repo-compengines.t Wed Mar 27 18:26:54 2019 +0100 @@ -21,8 +21,8 @@ Unknown compression engine to format.compression aborts - $ hg --config experimental.format.compression=unknown init unknown - abort: compression engine unknown defined by experimental.format.compression not available + $ hg --config format.revlog-compression=unknown init unknown + abort: compression engine unknown defined by format.revlog-compression not available (run "hg debuginstall" to list available compression engines) [255] @@ -40,7 +40,7 @@ #if zstd - $ hg --config experimental.format.compression=zstd init zstd + $ hg --config format.revlog-compression=zstd init zstd $ cd zstd $ cat .hg/requires dotencode @@ -66,7 +66,7 @@ $ cd default $ touch bar - $ hg --config experimental.format.compression=zstd -q commit -A -m 'add bar with a lot of repeated repeated repeated text' + $ hg --config format.revlog-compression=zstd -q commit -A -m 'add bar with a lot of repeated repeated repeated text' $ cat .hg/requires dotencode @@ -141,13 +141,13 @@ checking zstd options ===================== - $ hg init zstd-level-default --config experimental.format.compression=zstd - $ hg init zstd-level-1 --config experimental.format.compression=zstd + $ hg init zstd-level-default --config format.revlog-compression=zstd + $ hg init zstd-level-1 --config format.revlog-compression=zstd $ cat << EOF >> zstd-level-1/.hg/hgrc > [storage] > revlog.zstd.level=1 > EOF - $ hg init zstd-level-22 --config experimental.format.compression=zstd + $ hg init zstd-level-22 --config format.revlog-compression=zstd $ cat << EOF >> zstd-level-22/.hg/hgrc > [storage] > revlog.zstd.level=22 @@ -172,7 +172,7 @@ Test error cases - $ hg init zstd-level-invalid --config experimental.format.compression=zstd + $ hg init zstd-level-invalid --config format.revlog-compression=zstd $ cat << EOF >> zstd-level-invalid/.hg/hgrc > [storage] > revlog.zstd.level=foobar @@ -182,7 +182,7 @@ abort: storage.revlog.zstd.level is not a valid integer ('foobar') [255] - $ hg init zstd-level-out-of-range --config experimental.format.compression=zstd + $ hg init zstd-level-out-of-range --config format.revlog-compression=zstd $ cat << EOF >> zstd-level-out-of-range/.hg/hgrc > [storage] > revlog.zstd.level=42