Mercurial > hg > mercurial-crew-with-dirclash
view contrib/macosx/Readme.html @ 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 | 4716a58c8cd5 |
children | 846bf33bf140 |
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <meta http-equiv="Content-Style-Type" content="text/css"> <title></title> <style type="text/css"> p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Helvetica} p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; min-height: 14.0px} p.p3 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica} p.p4 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; color: #000fed} span.s1 {text-decoration: underline} span.s2 {font: 12.0px Courier} </style> </head> <body> <p class="p1"><b>Before you install</b></p> <p class="p2"><br></p> <p class="p3">This is <i>not</i> a stand-alone version of Mercurial.</p> <p class="p2"><br></p> <p class="p3">To use it, you must have the Universal MacPython 2.4.3 from <a href="http://www.python.org">www.python.org</a> installed.</p> <p class="p2"><br></p> <p class="p3">You can download MacPython 2.4.3 from here:</p> <p class="p4"><span class="s1"><a href="http://www.python.org/ftp/python/2.4.3/Universal-MacPython-2.4.3-2006-04-07.dmg">http://www.python.org/ftp/python/2.4.3/Universal-MacPython-2.4.3-2006-04-07.dmg</a></span></p> <p class="p2"><br></p> <p class="p1"><b>After you install</b></p> <p class="p2"><br></p> <p class="p3">This package installs the <span class="s2">hg</span> executable in <span class="s2">/usr/local/bin</span>. This directory may not be in your shell's search path. Don't forget to check.</p> <p class="p2"><br></p> <p class="p1"><b>Reporting problems</b></p> <p class="p2"><br></p> <p class="p3">If you run into any problems, please file a bug online:</p> <p class="p3"><a href="http://www.selenic.com/mercurial/bts">http://www.selenic.com/mercurial/bts</a></p> </body> </html>