Created
January 4, 2012 05:03
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system ~/projects/gc_tests $ rvm 1.9.3 do ruby gc_stress.rb | |
20.760000 0.250000 21.010000 ( 21.007255) | |
{:count=>7921, | |
:heap_used=>43, | |
:heap_length=>43, | |
:heap_increment=>0, | |
:heap_live_num=>5607, | |
:heap_free_num=>11963, | |
:heap_final_num=>1} | |
GC time: 2.259033000000017s | |
system ~/projects/gc_tests $ jruby --1.9 gc_stress.rb | |
5.270000 0.000000 5.270000 ( 5.270000) | |
{"PS Scavenge"=> | |
{:count=>47, | |
:time=>78, | |
:pools=> | |
{"PS Survivor Space"=> | |
{:committed=>786432, | |
:init=>3342336, | |
:max=>786432, | |
:used=>770064, | |
:peak_committed=>5767168, | |
:peak_init=>3342336, | |
:peak_max=>5767168, | |
:peak_used=>3386016, | |
:last_committed=>786432, | |
:last_init=>3342336, | |
:last_max=>786432, | |
:last_used=>770064}}}, | |
"PS MarkSweep"=> | |
{:count=>0, | |
:time=>0, | |
:pools=> | |
{"PS Perm Gen"=> | |
{:committed=>21954560, | |
:init=>21757952, | |
:max=>85983232, | |
:used=>21761112, | |
:peak_committed=>21954560, | |
:peak_init=>21757952, | |
:peak_max=>85983232, | |
:peak_used=>21761112, | |
:last_committed=>0, | |
:last_init=>21757952, | |
:last_max=>85983232, | |
:last_used=>0}}}} | |
system ~/projects/gc_tests $ cat gc_stress.rb | |
require 'benchmark' | |
case RUBY_ENGINE | |
when "ruby" | |
GC::Profiler.enable | |
end | |
class Simple | |
attr_accessor :next | |
end | |
top = Simple.new | |
puts Benchmark.measure { | |
outer = 10 | |
total = 100000 | |
per = 100 | |
outer.times do | |
total.times do | |
per.times { Simple.new } | |
s = Simple.new | |
top.next = s | |
top = s | |
end | |
end | |
} | |
require 'pp' | |
pp GC.stat | |
case RUBY_ENGINE | |
when "ruby" | |
puts "GC time: #{GC::Profiler.total_time}s" | |
end | |
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