Mercurial > hg > mercurial-crew-with-dirclash
view tests/test-status @ 2577:fa76c5d609c9
bdiff: improve worst case behavior by 100x.
on 5.8MB (244.000 lines) text file with similar lines, hash before
this change made diff against empty file take 75 seconds. this change
improves performance to 0.6 seconds. result is that clone of smallish
repo (137MB) with some files like this takes 1 minute instead of 10
minutes.
common case of diff is 10% slower now, probably because of worse cache
locality. but diff does not affect overall performance in common case
(less than 1% of runtime is in diff when it is working ok), so this
tradeoff looks good.
author | Vadim Gelfer <vadim.gelfer@gmail.com> |
---|---|
date | Fri, 07 Jul 2006 15:02:55 -0700 |
parents | 7544700fd931 |
children | 001703ec311d |
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#!/bin/sh hg init repo1 cd repo1 mkdir a b a/1 b/1 b/2 touch in_root a/in_a b/in_b a/1/in_a_1 b/1/in_b_1 b/2/in_b_2 echo "hg status in repo root:" hg status echo "hg status . in repo root:" hg status . for dir in a b a/1 b/1 b/2; do echo "hg status in $dir:" hg status --cwd "$dir" echo "hg status . in $dir:" hg status --cwd "$dir" . echo "hg status .. in $dir:" hg status --cwd "$dir" .. done cd .. hg init repo2 cd repo2 touch modified removed deleted ignored echo "ignored" > .hgignore hg ci -A -m 'initial checkin' -d "1000000 0" sleep 1 # make sure mtime is changed touch modified added unknown ignored hg add added hg remove removed rm deleted echo "hg status:" hg status echo "hg status modified added removed deleted unknown never-existed ignored:" hg status modified added removed deleted unknown never-existed ignored