Mercurial > hg
view tests/test-hybridencode.py @ 16363:2cdd7e63211b
parsers: incrementally parse the revlog index in C
We only parse entries in a revlog index file when they are actually
needed, and cache them when first requested.
This makes a huge difference to performance on large revlogs when
accessing the tip revision or performing a handful of numeric lookups
(very common cases). For instance, "hg --time tip --template {node}"
on a tree with 300,000 revs takes 0.15 before, 0.02 after.
Even for revlog-intensive operations (e.g. running "hg log" to
completion), the lazy approach is about 1% faster than the eager
parse_index2.
author | Bryan O'Sullivan <bryano@fb.com> |
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date | Thu, 05 Apr 2012 13:00:35 -0700 |
parents | 4c50552fc9bc |
children | 81b115385bc7 |
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from mercurial import store auxencode = lambda f: store._auxencode(f, True) hybridencode = lambda f: store._hybridencode(f, auxencode) enc = hybridencode # used for 'dotencode' repo format def show(s): print "A = '%s'" % s print "B = '%s'" % enc(s) print show('data/aux.bla/bla.aux/prn/PRN/lpt/com3/nul/coma/foo.NUL/normal.c.i') show('data/AUX/SECOND/X.PRN/FOURTH/FI:FTH/SIXTH/SEVENTH/EIGHTH/NINETH/' 'TENTH/ELEVENTH/LOREMIPSUM.TXT.i') show('data/enterprise/openesbaddons/contrib-imola/corba-bc/netbeansplugin/' 'wsdlExtension/src/main/java/META-INF/services/org.netbeans.modules' '.xml.wsdl.bindingsupport.spi.ExtensibilityElementTemplateProvider.i') show('data/AUX.THE-QUICK-BROWN-FOX-JU:MPS-OVER-THE-LAZY-DOG-THE-QUICK-' 'BROWN-FOX-JUMPS-OVER-THE-LAZY-DOG.TXT.i') show('data/Project Planning/Resources/AnotherLongDirectoryName/' 'Followedbyanother/AndAnother/AndThenAnExtremelyLongFileName.txt') show('data/Project.Planning/Resources/AnotherLongDirectoryName/' 'Followedbyanother/AndAnother/AndThenAnExtremelyLongFileName.txt') show('data/foo.../foo / /a./_. /__/.x../ bla/.FOO/something.i')