comparison.txt
author mpm@selenic.com
Sat, 04 Jun 2005 14:16:32 -0800
changeset 249 619e775aa7f9
parent 139 17e66e1a0382
child 1308 2073e5a71008
permissions -rw-r--r--
import and startup cleanups -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 import and startup cleanups add commands:run() add copyright notice to commands eliminate/reorganize imports to speed up start time: 0.5b: $ time bash -c 'for i in `seq 100`; do ~/bin/hg > /dev/null; done' real 0m7.718s user 0m6.719s sys 0m0.794s new: $ time bash -c 'for i in `seq 100`; do hg > /dev/null; done' real 0m2.171s user 0m1.684s sys 0m0.444s just python: $ time bash -c 'for i in `seq 100`; do python -c pass; done' real 0m0.988s user 0m0.771s sys 0m0.207s Ignoring the fixed cost of loading the Python interpreter, we're 5.6 times faster. With the Python load time, we're still 3.5 times faster. manifest hash: acce5882a55c76eb165316f5741724c8ce4ef587 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (GNU/Linux) iD8DBQFCoihAywK+sNU5EO8RAqMdAJwMe6Ur0R9G6jjayNa5hH2C3c4k/gCeIYvc N178vaWWGciX9zq+g5qCAls= =buhv -----END PGP SIGNATURE-----
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                    Mercurial      git                     BK (*)
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storage             revlog delta   compressed revisions    SCCS weave
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storage naming      by filename    by revision hash        by filename
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merge               file DAGs      changeset DAG           file DAGs?
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consistency         SHA1           SHA1                    CRC
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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)
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find prev file rev  O(1)           O(changesets)           O(revs)
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annotate file       O(revs)        O(changesets)           O(revs)
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find file changeset O(1)           O(changesets)           ?
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checkout            O(files)       O(files)                O(revs)?
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commit              O(changes)     O(changes)              ?
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                    6 patches/s    6 patches/s             slow
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diff working dir    O(changes)     O(changes)              ?
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                    < 1s           < 1s                    ?
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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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pull remote csets   O(patch)       O(modified files)       O(patch)
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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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lines of code       2500           6500 (+ cogito)         ??
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* I've never used BK so this is just guesses