From: Horacio Sanson <hsanson@...>
Date: 2005-12-13T09:57:30+09:00
Subject: Re: Memory Usage

Thanks,

I already ran the Robert Klemme's code to see the object count of each class. 
I ran the code every time my script finished  processing each record of the 
database and the numbers are like this:

String:    42812
Array:    16651
WIN32OLE:	3184
Hash:	2065


These are the biggest entries but they do not increase all the time, they 
fluctuate up and down.  Strings goes up to 60,000+ objects and then drops 
down back to 20,000+ objects. Then starts growing again. This happens with 
all objects.  Other classes are below 100 or are even 0.

I do not use symbols apart from those needed by ActiveRecord.

going to test now the MemoryProfiler of John Carter.

BTW, are these numbers normal??


thanks for the tips.
Horacio

Tuesday 13 December 2005 01:17、Gene Tani さんは書きました:
> Horacio Sanson wrote:
> > I have a ruby script that reads data from a database, processes the data
> > (long texts) and saves the results back to the database. I works great
> > and at good speed.
> >
> > The problem is that I ran the script on friday and left it until monday
> > when I saw some memory related errors in the console (Insufficient Memory
> > something...). I ran the script again and fired up the windows task
> > manager and then I saw that for every 10~15 records in the DB the script
> > processes the memory goes up 1MB and there are no signs of it going down.
> >
> > I started the script this morning and the PC was at 400MB ram usage, now
> > is night and the PC is at 1.05GB ram usage.
> >
> > Is this a memory leak?? is it caused by my scritpt? or is a Ruby thing??
> >
> > I use Ruby 1.8.2 and ActiveRecord 1.13.1 in a WinXP machine.
> >
> > any comments on how to find out where the memory is going are welcome.
> >
> > regards,
> > Horacio
>
> a couple recent threads on digging into ruby'c GC:
> http://groups.google.com/group/comp.lang.ruby/browse_thread/thread/4e77925c
>75949460
>
> and John Carter's thing to dump out your objects and (linux) processes
> http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/139987