Some utilities for mem usage analysis
Returns a Hash : classname => [ count, maxsize, totalsize, avgsize ]
The relative size of an object is computed with Marshal.dump(o).size
This uses ObjectSpace.
see www.ruby-forum.com/topic/186339 for better options.
# File lib/ruote/util/look.rb, line 66 def self.count uninteresting = [ Array, String, Hash, Set, Module, Range, Float, Bignum ] h = {} ObjectSpace.each_object do |o| next if uninteresting.include?(o.class) stats = h[o.class.to_s] ||= [ 0, 0, 0 ] size = begin Marshal.dump(o).size rescue Exception => e 1 end stats[0] += 1 stats[1] = size if size > stats[1] stats[2] += size end a = h.to_a a.each { |k, v| v << v[2] / v[0] } a.sort { |x, y| x.last[1] <=> y.last[1] }.reverse end
Very naive : does a "ps aux | grep pid".
Returns a hash like this one :
{
:user => "jmettraux",
:pid => "1100",
:cpu => "73.0",
:mem => "0.8",
:vsz => "2472732",
:rss => "35308",
:tt => "s001",
:stat => "S+",
:started => "8:55PM",
:time => "0:01.05",
:command => "ruby start.rb"
}
# File lib/ruote/util/look.rb, line 114 def self.ps s = `ps aux | egrep '^.+ +#{$$} '`.split(' ') s[10] = s[10..-1].join(' ') # the command h = {} ] user pid cpu mem vsz rss tt stat started time command ].each_with_index { |k, i| h[k.to_sym] = s[i] } h end
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