Mercurial > hg > mercurial-crew-with-dirclash
view tests/test-archive @ 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 | 83cfd95eafb5 |
| children | ca023b63ba1f |
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#!/bin/sh mkdir test cd test hg init echo foo>foo hg addremove hg commit -m 1 echo bar>bar hg addremove hg commit -m 2 mkdir baz echo bletch>baz/bletch hg addremove hg commit -m 3 echo "[web]" >> .hg/hgrc echo "name = test-archive" >> .hg/hgrc echo "allow_archive = gz bz2, zip" >> .hg/hgrc hg serve -p 20059 -d --pid-file=hg.pid cat hg.pid >> $DAEMON_PIDS TIP=`hg id -v | cut -f1 -d' '` QTIP=`hg id -q` cat > getarchive.py <<EOF import sys, urllib2 node, archive = sys.argv[1:] f = urllib2.urlopen('http://127.0.0.1:20059/?cmd=archive;node=%s;type=%s' % (node, archive)) sys.stdout.write(f.read()) EOF http_proxy= python getarchive.py "$TIP" gz | gunzip | tar tf - | sed "s/$QTIP/TIP/" http_proxy= python getarchive.py "$TIP" bz2 | bunzip2 | tar tf - | sed "s/$QTIP/TIP/" http_proxy= python getarchive.py "$TIP" zip > archive.zip unzip -t archive.zip | sed "s/$QTIP/TIP/" hg archive -t tar test.tar tar tf test.tar hg archive -t tbz2 -X baz test.tar.bz2 bunzip2 -dc test.tar.bz2 | tar tf - hg archive -t tgz -p %b-%h test-%h.tar.gz gzip -dc test-$QTIP.tar.gz | tar tf - | sed "s/$QTIP/TIP/" hg archive -t zip -p /illegal test.zip hg archive -t zip -p very/../bad test.zip hg archive -t zip -r 2 test.zip unzip -t test.zip hg archive -t tar - | tar tf - | sed "s/$QTIP/TIP/"