view comparison.txt @ 600:11c379e23ad6

Simplify RSS date generation -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Simplify RSS date generation manifest hash: 3b1628aaee450c292949f6d079b4a05ccb5ce6ab -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (GNU/Linux) iD8DBQFCyLatywK+sNU5EO8RAiLMAKCqYFyzSDCU6Wm34LSWZroAHMqa4QCfSWv6 jh/vvuQS0qmXybm6Ivd7XVY= =x1Rf -----END PGP SIGNATURE-----
author mpm@selenic.com
date Sun, 03 Jul 2005 20:10:21 -0800
parents 17e66e1a0382
children 2073e5a71008
line wrap: on
line source

                    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