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comparison.txt
author Vadim Gelfer <vadim.gelfer@gmail.com>
Thu, 18 May 2006 13:48:12 -0700
changeset 2309 b2f37c7026ca
parent 1308 2073e5a71008
permissions -rw-r--r--
remove: rewrite to be ~400x faster, bit more friendly old remove code called localrepo.changes for each file. was very expensive: $ hg --time rm arch>/dev/null Time: real 1066.120 secs (user 1014.450+0.000 sys 18.090+0.000) new code, same files: $ hg --time rm arch>/dev/null Time: real 2.770 secs (user 2.190+0.000 sys 0.580+0.000) also mention "-f" if not removing files. also allow "-f" to forget added files. make test a bit better.

                    Mercurial      git                     BK (*)
storage             revlog delta   compressed revisions    SCCS weave
storage naming      by filename    by revision hash        by filename
merge               file DAGs      changeset DAG           file DAGs?
consistency         SHA1           SHA1                    CRC
signable?           yes            yes                     no

retrieve file tip   O(1)           O(1)                    O(revs)
add rev             O(1)           O(1)                    O(revs)
find prev file rev  O(1)           O(changesets)           O(revs)
annotate file       O(revs)        O(changesets)           O(revs)
find file changeset O(1)           O(changesets)           ?

checkout            O(files)       O(files)                O(revs)?
commit              O(changes)     O(changes)              ?
                    6 patches/s    6 patches/s             slow
diff working dir    O(changes)     O(changes)              ?
                    < 1s           < 1s                    ?
tree diff revs      O(changes)     O(changes)              ?
                    < 1s           < 1s                    ?
hardlink clone      O(files)       O(revisions)            O(files)

find remote csets   O(log new)     rsync: O(revisions)     ?
                                   git-http: O(changesets)
pull remote csets   O(patch)       O(modified files)       O(patch)

repo growth         O(patch)       O(revisions)            O(patch)
 kernel history     300M           3.5G?                   250M?
lines of code       2500           6500 (+ cogito)         ??

* I've never used BK so this is just guesses
mercurial-crew-with-dirclash