From: Michael Neumann <mneumann@...>
Date: 2005-01-25T23:49:28+09:00
Subject: Re: XML-RPC Memory Problem

Torsten Senf wrote:
> Hi,
> 
> I use a simple XML-RPC Server, which should print out Content from some Files via XML-RPC. 
> Here is the source of the server:
> 
> require "xmlrpc/server"
> 
> s = XMLRPC::Server.new(port="8080")
> 
> class MyFile
>   
>   # shows only the tail of the file
>   def showlog(a)
>     line_a = []
>     f = File.open(a,"r")
>     f.seek(-100, IO::SEEK_END)
>     f.seek(-30000, IO::SEEK_CUR)
>     line_a = f.readlines.reverse
>     f.close
>     return line_a
>   end 
>   
>   # shows the whole file	
>   def showconfig(a)
>     f = File.open(a,"r")
>     f_a = f.readlines
>     f.close
>   return f_a
>   end
> end
> 
> 
> s.add_handler("file", MyFile.new)
> 
> s.serve
> 
> The problem is now, when I call the server, it gives the contents of the
> files (ok), but the memory usage of the process increases from call to call
> and the memory would not be get free. I have no idea why. How can I
> guarantee, that the memory usage from the server will be decreased after
> calling a methode via XML RPC? 

You could insert GC.start, which invokes the garbage-collector. Is 
memory consuption increasing monotonically, or does it increase and then 
stay stable? If the first case applies, you (or XML-RPC) has a memory leak.

Regards,

   Michael