From: Richard Kilmer <rich@...>
Date: 2003-11-20T00:53:22+09:00
Subject: Re: gc_sweep in Ruby 1.8

Thanks Guy!

On Nov 19, 2003, at 5:44 AM, ts wrote:

>>>>>> "R" == Richard Kilmer <rich@infoether.com> writes:
>
>  Well, the problem is here
>
> R> Reading symbols from /usr/lib/ruby/1.8/i686-linux/syck.so...done.

You nailed it.  Its syck.so.  I had a problem with syck this weekend at 
the RubyConf and was going to email _why about it...so I guess the 
problem is more severe than I thought.  We do require 'yaml', but then 
don't use it in the current scripts we are running so I moved the 
require statement into the methods that call YAML.load.  This will fix 
things for now, and hopefully _why will figure it out.  Also, when 
running with yaml/syck loaded vs. not loaded the system incurs quite an 
overhead.  In a very CPU/Memory heavy script, the time was cut in half 
w/o yaml/syck loaded (5 minutes vs. 10 minutes).

We have a production DARPA system running here that was being held up 
because of this, and the team thanks you as well.

-rich

_why...please contact me directly and I can send you some YAML that 
will crash syck ;-)


> R> Reading symbols from /usr/lib/ruby/1.8/i686-linux/openssl.so...done.
> R> Reading symbols from 
> /usr/lib/ruby/1.8/i686-linux/digest/sha1.so...done.
> R> Reading symbols from /usr/lib/ruby/1.8/i686-linux/digest.so...done.
>
>  the bug is perhaps in one of these libraries and not in ruby.
>
>  What is the error message given by ruby ?
>
>
> Guy Decoux
>
>