From: Michael Davis <mdavis@...>
Date: 2001-06-09T23:55:09+09:00
Subject: [ruby-talk:16357] Re: Garbage Collection?

The method eats memory for as long as it runs.  When it completes all 
memory is returned.   My intent is to keep a process running that does 
something similar for a very long time.  Eating memory like it does means 
that the process will have a very limited time span.

-----Original Message-----
From:	ts [SMTP:decoux@moulon.inra.fr]
Sent:	Saturday, June 09, 2001 8:32 AM
To:	ruby-talk ML
Cc:	ruby-talk@ruby-lang.org
Subject:	[ruby-talk:16355] Re: Garbage Collection?

>>>>> "M" == Michael Davis <mdavis@sevainc.com> writes:

M> Here is a test script that is similar to what my btree is doing.  The
M> method test() eats memory like crazy.

 Well, this script

pigeon% cat b.rb
#!/usr/bin/ruby
def test()
   a = []
   0.upto(99999) {|i| a[i] = rand(999999)}
   b = Marshal.dump(a)
   GC.start
end

def testing(count)
   0.upto(count) {|i|
      system("ps aux | grep b.rb | grep -v grep") if i == 1
      test
   }
end

system("ps aux | head -1")
testing(100)
system("ps aux | grep b.rb | grep -v grep")

pigeon%

 has given

pigeon% b.rb
USER       PID %CPU %MEM   VSZ  RSS TTY      STAT START   TIME COMMAND
ts       25158 99.9  0.8  3384 2208 pts/0    S    16:24   0:01 ruby ./b.rb
ts       25158 99.9  0.8  3384 2208 pts/0    S    16:24   2:03 ruby ./b.rb
pigeon%



Guy Decoux