annotate comparison.txt @ 1721:801756d0ca84

add pretxncommit hook. hook allows check of changeset after create, but before transaction is committed. hook failure rolls transaction back. makes place for local policies like commit message must contain bug id or reviewer signoff. change also adds parent changeset ids to commit hook environment, because is cheap and useful.
author Vadim Gelfer <vadim.gelfer@gmail.com>
date Tue, 14 Feb 2006 17:13:18 -0800
parents 2073e5a71008
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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2ab801e0ea9f A quick set of comparisons between hg, git, and bk
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1 Mercurial git BK (*)
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2 storage revlog delta compressed revisions SCCS weave
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3 storage naming by filename by revision hash by filename
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4 merge file DAGs changeset DAG file DAGs?
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5 consistency SHA1 SHA1 CRC
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6 signable? yes yes no
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8 retrieve file tip O(1) O(1) O(revs)
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9 add rev O(1) O(1) O(revs)
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10 find prev file rev O(1) O(changesets) O(revs)
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11 annotate file O(revs) O(changesets) O(revs)
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12 find file changeset O(1) O(changesets) ?
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14 checkout O(files) O(files) O(revs)?
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15 commit O(changes) O(changes) ?
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16 6 patches/s 6 patches/s slow
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17 diff working dir O(changes) O(changes) ?
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18 < 1s < 1s ?
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19 tree diff revs O(changes) O(changes) ?
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20 < 1s < 1s ?
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21 hardlink clone O(files) O(revisions) O(files)
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22
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23 find remote csets O(log new) rsync: O(revisions) ?
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24 git-http: O(changesets)
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25 pull remote csets O(patch) O(modified files) O(patch)
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27 repo growth O(patch) O(revisions) O(patch)
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28 kernel history 300M 3.5G? 250M?
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29 lines of code 2500 6500 (+ cogito) ??
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31 * I've never used BK so this is just guesses