Effects of memoizing marking

gistfile1.txt

With memocache:

kj@kj-thinkpad ruby_memprofiler_pprof % ruby script/benchmark.rb
                                           user     system      total        real
no profiling (1)                      15.844936   0.469273  16.314209 ( 16.337021)
no profiling (2)                      14.966771   0.034934  15.001705 ( 15.020942)
with profiling (1%, no flush)         15.971306   0.477258  16.448564 ( 16.471195)
with reporting (1%, with flush)       17.402173   0.029948  17.432121 ( 17.454925)
with profiling (10%, no flush)        23.168302   0.289576  23.457878 ( 23.487329)
with reporting (10%, with flush)      48.194583   0.042943  48.237526 ( 48.290087)
with profiling (100%, no flush)       24.493680   0.329478  24.823158 ( 24.856144)
with reporting (100%, with flush)     95.083065   0.099887  95.182952 ( 95.286911)

without memocache

kj@kj-thinkpad ruby_memprofiler_pprof % ruby script/benchmark.rb
                                           user     system      total        real
no profiling (1)                      16.065417   0.485242  16.550659 ( 16.573165)
no profiling (2)                      15.000798   0.023953  15.024751 ( 15.043646)
with profiling (1%, no flush)         22.747568   0.536194  23.283762 ( 23.311101)
with reporting (1%, with flush)       24.246680   0.033966  24.280646 ( 24.308290)
with profiling (10%, no flush)       107.980856   0.293503 108.274359 (108.367820)
with reporting (10%, with flush)     155.435044   0.051858 155.486902 (155.656765)
with profiling (100%, no flush)      625.515556   0.349395 625.864951 (626.395230)
with reporting (100%, with flush)    1081.306918   0.127849 1081.434767 (1082.340924)