ruby-core

Issue #641 has been updated by Narihiro Nakamura.


Hi.

It seems interesting :)

I tried it with 1.9
But this not appeared speed up.

----
$ cat bm_ruby-core_19301.rb 
require 'benchmark'
require 'pp'
GC::Profiler.enable
a = []
1_000_000.times { a << [3] }
pp Benchmark.measure { 33.times { GC.start }}
GC::Profiler.report

$ % ./ruby-trunk/ruby bm_ruby-core_19301.rb 
#<Benchmark::Tms:0x9686cb8
 @cstime=0.0,
 @cutime=0.0,
 @label="",
 @real=2.24389553070068,
 @stime=0.0,
 @total=2.2,
 @utime=2.2>
GC 42 invokes.
Index    Invoke Time(sec)       Use Size(byte)     Total Size(byte)         Total Object                    GC Time(ms)
    1               0.032               539600               622592                31122         0.00000000000000028257
    2               0.040              1080240              1097728                54873         0.40000000000000018874
    3               0.052              1931380              1949696                97461         0.39999999999999968914
    4               0.076              3469980              3489792               174447         1.20009999999999950049
    5               0.124              6236160              6258688               312858         2.00020000000000042206
    6               0.200             11212040             11239424               561834         4.00029999999999930083
    7               0.340             20181700             20217856              1010646         6.80040000000000244285
    8               0.408             20222720             20332544              1016379         6.80040000000000066649
    9               0.476             20222720             20348928              1017198         6.40039999999999942304
   10               0.540             20222720             20365312              1018017         6.80049999999999776890
   11               0.608             20222720             20381696              1018836         6.80040000000000066649
   12               0.676             20222720             20398080              1019655         6.80040000000000510738
   13               0.744             20222720             20414464              1020474         6.00039999999999817959
   14               0.804             20222720             20430848              1021293         6.80040000000000244285
   15               0.872             20222720             20447232              1022112         6.40039999999999675850
   16               0.936             20222720             20463616              1022931         6.40040000000000652847
   17               1.000             20222720             20480000              1023750         6.00039999999999906777
   18               1.060             20222720             20496384              1024569         6.80040000000000333102
   19               1.128             20222720             20512768              1025388         6.40040000000000919300
   20               1.192             20222720             20529152              1026207         6.40039999999999054126
   21               1.256             20222720             20545536              1027026         6.40039999999999675850
   22               1.320             20222720             20561920              1027845         6.80040000000000066649
   23               1.388             20222720             20578304              1028664         6.40040000000000475211
   24               1.452             20222720             20594688              1029483         6.80050000000000931522
   25               1.520             20222720             20611072              1030302         7.20040000000000013358
   26               1.592             20222720             20627456              1031121         6.80040000000000333102
   27               1.660             20222720             20643840              1031940         6.40040000000000919300
   28               1.724             20222720             20660224              1032759         6.80049999999999155165
   29               1.792             20222720             20676608              1033578         6.40040000000000297575
   30               1.856             20222720             20692992              1034397         6.80040000000000777192
   31               1.924             20222720             20709376              1035216         6.80039999999999000835
   32               1.992             20222720             20725760              1036035         6.80039999999999977831
   33               2.060             20222720             20742144              1036854         6.80049999999998178168
   34               2.128             20222720             20758528              1037673         6.80039999999999356106
   35               2.196             20222720             20774912              1038492         6.80040000000002020641
   36               2.264             20222720             20791296              1039311         6.40040000000000208757
   37               2.328             20222720             20807680              1040130         7.20049999999998480149
   38               2.400             20222720             20824064              1040949         6.80039999999999711378
   39               2.468             20222720             20840448              1041768         6.80039999999998023839
   40               2.536             20222720             20856832              1042587         7.20050000000000522959

% ./ruby1.9_cach/ruby bm_ruby-core_19301.rb
#<Benchmark::Tms:0x9686c2c
 @cstime=0.0,
 @cutime=0.0,
 @label="",
 @real=2.26782369613647,
 @stime=0.01,
 @total=2.26,
 @utime=2.25>
GC 42 invokes.
Index    Invoke Time(sec)       Use Size(byte)     Total Size(byte)         Total Object                    GC Time(ms)
    1               0.032               539940               622592                31122         0.39999999999999991118
    2               0.044              1080320              1097728                54873         0.40000000000000007772
    3               0.056              1931440              1949696                97461         0.40010000000000034426
    4               0.084              3470040              3489792               174447         1.20009999999999950049
    5               0.132              6236240              6258688               312858         2.00010000000000021103
    6               0.220             11212100             11239424               561834         3.60020000000000006679
    7               0.376             20181760             20217856              1010646         6.40039999999999764668
    8               0.440             20222580             20332544              1016379         6.40039999999999764668
    9               0.504             20222580             20348928              1017198         6.80049999999999688072
   10               0.572             20222580             20365312              1018017         6.80039999999999800195
   11               0.640             20222580             20381696              1018836         7.20040000000000279812
   12               0.712             20222580             20398080              1019655         6.80049999999999510436
   13               0.780             20222580             20414464              1020474         6.80039999999999711378
   14               0.848             20222580             20430848              1021293         6.40040000000000031122
   15               0.912             20222580             20447232              1022112         6.40039999999999498215
   16               0.976             20222580             20463616              1022931         6.80040000000000333102
   17               1.044             20222580             20480000              1023750         6.80039999999999711378
   18               1.112             20222580             20496384              1024569         7.20050000000000167688
   19               1.184             20222580             20512768              1025388         6.80039999999999089653
   20               1.252             20222580             20529152              1026207         6.80039999999999533742
   21               1.320             20222580             20545536              1027026         7.20049999999999990052
   22               1.392             20222580             20561920              1027845         6.80039999999999000835
   23               1.460             20222580             20578304              1028664         6.80039999999999356106
   24               1.528             20222580             20594688              1029483         7.20049999999999812417
   25               1.600             20222580             20611072              1030302         7.20039999999998858726
   26               1.672             20222580             20627456              1031121         6.40039999999999231761
   27               1.736             20222580             20643840              1031940         7.20049999999999723599
   28               1.808             20222580             20660224              1032759         6.80040000000000954827
   29               1.876             20222580             20676608              1033578         6.80039999999999267288
   30               1.944             20222580             20692992              1034397         6.80050000000000132161
   31               2.012             20222580             20709376              1035216         6.80040000000001310099
   32               2.080             20222580             20725760              1036035         7.20039999999999569269
   33               2.152             20222580             20742144              1036854         6.40040000000002162750
   34               2.216             20222580             20758528              1037673         6.80050000000000398614
   35               2.284             20222580             20774912              1038492         6.40040000000001718661
   36               2.348             20222580             20791296              1039311         7.20040000000000013358
   37               2.420             20222580             20807680              1040130         6.80039999999998112656
   38               2.488             20222580             20824064              1040949         6.80050000000000753886
   39               2.556             20222580             20840448              1041768         6.80040000000002020641
   40               2.624             20222580             20856832              1042587         6.80040000000000244285


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http://redmine.ruby-lang.org/issues/show/641

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http://redmine.ruby-lang.org

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