jruby_gc_stats

Title: jruby-gc-stats

Description:

This is a set of GC-monitoring methods for JRuby that mimic behavior of Ruby Enterprise Edition's GC methods. In our case, these are all implemented in Ruby, using the JVM's built-in monitoring and management APIs.

Example Usage:

require 'jruby/gc_stats'

require 'pp' puts "Enabling stats..." GC.enable_stats puts "allocation size: #{GC.allocation_size}" puts "Running loop..." 1_000.times { ary = [] 1_000.times {ary << 'foo' + 'bar'} } puts "collections: #{GC.collections}" puts "time: #{GC.time}ms" puts "bytes since last GC: #{GC.growth}" puts "size change: #{GC.allocation_size}" puts "Dumping..." GC.dump

puts "Dumping caller for all threads..." 2.times {Thread.new {sleep}} pp caller_for_all_threads