Mercurial > hg
view tests/test-install.t @ 20275:2123d27ff75d
backout: avoid update on simple case.
Before the changeset the backout process was:
1) go to <target>
2) revert to <target> parent
3) update back to changeset we came from
The two update steps can takes a very long time to move back and forth unrelated
file change between <target> and current working directory.
The new process is just merging current working directory with the parent of
<target> using <target> as ancestor. This give the very same result but skip
the two updates. On big repo with a lot of files and changes that save a lots of
time (x20 for one week window).
The "merge" version (hg backout --merge) is still done with upgrades. We could
imagine using in memory commit to speed it up but this is another fish.
| author | Pierre-Yves David <pierre-yves.david@fb.com> |
|---|---|
| date | Wed, 08 Jan 2014 14:53:46 -0800 |
| parents | bdd248666dbc |
| children | 5614f8cf0861 |
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hg debuginstall $ hg debuginstall checking encoding (ascii)... checking Python lib (*lib*)... (glob) checking installed modules (*mercurial)... (glob) checking templates (*mercurial?templates)... (glob) checking commit editor... checking username... no problems detected hg debuginstall with no username $ HGUSER= hg debuginstall checking encoding (ascii)... checking Python lib (*lib*)... (glob) checking installed modules (*mercurial)... (glob) checking templates (*mercurial?templates)... (glob) checking commit editor... checking username... no username supplied (see "hg help config") (specify a username in your configuration file) 1 problems detected, please check your install! [1]