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comparison.txt
author Alexis S. L. Carvalho <alexis@cecm.usp.br>
Sat, 20 May 2006 15:34:19 -0300
changeset 2328 f789602ba840
parent 1308 2073e5a71008
permissions -rw-r--r--
hgweb.manifest: revno of manifest and changelog aren't always the same In the v4l-dvb repo, the manifest revno and the changelog revno are not in sync. This happened because the same patch was applied to the same revision in two different branches, resulting in the same manifest text, with the same parents and so the first revision was reused. Since hgweb.manifest was assuming the revnos of the manifest and of the changelog were always the same, clicking on manifest -> bz2 in the v4l-dvb site would download the wrong revision. Use the linkrev to go from manifest revision to changelog revision. This still won't be perfect since the page will still talk about "manifest for changeset XYZ", where XYZ was the first changeset to have this manifest, which is not necessarily the same changeset that the user clicked to get to this page - but at least the contents will be the same.
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2ab801e0ea9f A quick set of comparisons between hg, git, and bk
mpm@selenic.com
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                    Mercurial      git                     BK (*)
2ab801e0ea9f A quick set of comparisons between hg, git, and bk
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storage             revlog delta   compressed revisions    SCCS weave
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17e66e1a0382 Minor updates to comparison
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storage naming      by filename    by revision hash        by filename
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2ab801e0ea9f A quick set of comparisons between hg, git, and bk
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merge               file DAGs      changeset DAG           file DAGs?
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consistency         SHA1           SHA1                    CRC
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2073e5a71008 Cleanup of tabs and trailing spaces.
Thomas Arendsen Hein <thomas@intevation.de>
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signable?           yes            yes                     no
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retrieve file tip   O(1)           O(1)                    O(revs)













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add rev             O(1)           O(1)                    O(revs)













2ab801e0ea9f
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find prev file rev  O(1)           O(changesets)           O(revs)








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diff
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annotate file       O(revs)        O(changesets)           O(revs)








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A quick set of comparisons between hg, git, and bk



mpm@selenic.com


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find file changeset O(1)           O(changesets)           ?













2ab801e0ea9f
A quick set of comparisons between hg, git, and bk



mpm@selenic.com


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checkout            O(files)       O(files)                O(revs)?













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mpm@selenic.com


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commit              O(changes)     O(changes)              ?













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A quick set of comparisons between hg, git, and bk



mpm@selenic.com


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                    6 patches/s    6 patches/s             slow













2ab801e0ea9f
A quick set of comparisons between hg, git, and bk



mpm@selenic.com


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diff working dir    O(changes)     O(changes)              ?













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A quick set of comparisons between hg, git, and bk



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                    < 1s           < 1s                    ?













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mpm@selenic.com


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tree diff revs      O(changes)     O(changes)              ?













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                    < 1s           < 1s                    ?








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hardlink clone      O(files)       O(revisions)            O(files)













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find remote csets   O(log new)     rsync: O(revisions)     ?













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                                   git-http: O(changesets)








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A quick set of comparisons between hg, git, and bk



mpm@selenic.com


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pull remote csets   O(patch)       O(modified files)       O(patch)








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A quick set of comparisons between hg, git, and bk



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repo growth         O(patch)       O(revisions)            O(patch)








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 kernel history     300M           3.5G?                   250M?








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A quick set of comparisons between hg, git, and bk



mpm@selenic.com


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lines of code       2500           6500 (+ cogito)         ??













2ab801e0ea9f
A quick set of comparisons between hg, git, and bk



mpm@selenic.com


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A quick set of comparisons between hg, git, and bk



mpm@selenic.com


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* I've never used BK so this is just guesses















mercurial-crew-with-dirclash