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comparison design.txt @ 198:33a7d76f067b

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Performance optimization: reduce memory to keep revlog cached info
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 20 Apr 2011 05:40:14 +0200
parents 3a7696fb457c
children 114c9fe7b643
comparison
equal deleted inserted replaced
197:3a7696fb457c 198:33a7d76f067b
97 after pooling/caching in HgStatusCollector and HgChangeset 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. 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 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 100 93 seconds, memory consumption about 50-56 Mb
101 101
102 IndexEntry(int offset, int baseRevision) got replaced with int[] arrays (offsets - optional)
103 for 69338 revisions from cpython repo 1109408 bytes reduced to 277368 bytes with the new int[] version.
104 I.e. total for changelog+manifest is 1,5 Mb+ gain
105
102 <<<<< 106 <<<<<
103 107
104 Tests: 108 Tests:
105 DataAccess - readBytes(length > memBufferSize, length*2 > memBufferSize) - to check impl is capable to read huge chunks of data, regardless of own buffer size 109 DataAccess - readBytes(length > memBufferSize, length*2 > memBufferSize) - to check impl is capable to read huge chunks of data, regardless of own buffer size
106 110