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comparison design.txt @ 197:3a7696fb457c

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Investigate optimization options to allow fast processing of huge repositories. Fix defect in StatusCollector that lead to wrong result comparing first revision to empty repo (-1 to 0), due to same TIP constant value
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 19 Apr 2011 03:49:29 +0200
parents 8c8e3f372fa1
children 33a7d76f067b
comparison
equal deleted inserted replaced
196:e2115da4cf6a 197:3a7696fb457c
58 ??? http://mercurial.selenic.com/wiki/Manifest says "Multiple changesets may refer to the same manifest revision". To me, each changeset 58 ??? http://mercurial.selenic.com/wiki/Manifest says "Multiple changesets may refer to the same manifest revision". To me, each changeset
59 changes repository, hence manifest should update nodeids of the files it lists, effectively creating new manifest revision. 59 changes repository, hence manifest should update nodeids of the files it lists, effectively creating new manifest revision.
60 60
61 ? subrepos in log, status (-S) and manifest commands 61 ? subrepos in log, status (-S) and manifest commands
62 62
63 ? when p1 == -1, and p2 != -1, does HgStatusCollector.change() give correct result?
63 64
64 Commands to get CommandContext where they may share various caches (e.g. StatusCollector) 65 Commands to get CommandContext where they may share various caches (e.g. StatusCollector)
65 Perhaps, abstract classes for all Inspectors (i.e. StatusCollector.Inspector) for users to use as base classes to protect from change? 66 Perhaps, abstract classes for all Inspectors (i.e. StatusCollector.Inspector) for users to use as base classes to protect from change?
66 67
67 >>>> Effective file read/data access 68 >>>> Effective file read/data access
90 91
91 * defects 92 * defects
92 + ConfigFile to strip comments from values (#) 93 + ConfigFile to strip comments from values (#)
93 94
94 <<<<< 95 <<<<<
96 Performance.
97 after pooling/caching in HgStatusCollector and HgChangeset
98 hg log --debug -r 0:5000 and same via Log/HgLogCommand: approx. 220 seconds vs 279 seconds. Mem. cons. 20 vs 80 mb.
99 after further changes in HgStatusCollector (to read ahead 5 elements, 50 max cache, fixed bug with -1) - hg4j dumps 5000 in
100 93 seconds, memory consumption about 50-56 Mb
101
102 <<<<<
95 103
96 Tests: 104 Tests:
97 DataAccess - readBytes(length > memBufferSize, length*2 > memBufferSize) - to check impl is capable to read huge chunks of data, regardless of own buffer size 105 DataAccess - readBytes(length > memBufferSize, length*2 > memBufferSize) - to check impl is capable to read huge chunks of data, regardless of own buffer size
98 106
99 ExecHelper('cmd', OutputParser()).run(). StatusOutputParser, LogOutputParser extends OutputParser. construct java result similar to that of cmd, compare results 107 ExecHelper('cmd', OutputParser()).run(). StatusOutputParser, LogOutputParser extends OutputParser. construct java result similar to that of cmd, compare results