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From Randy Layman <randy.lay...@aswethink.com>
Subject RE: Someone please explain Processes
Date Thu, 01 Nov 2001 18:01:36 GMT
These are threads, not processes, as been explained hundreds of times before
on this list (the archives can be quite handy).  The amount of memory is
what is shared between all of the current threads.

	Randy


> -----Original Message-----
> From: David Molloy [mailto:molloyda@eeng.dcu.ie]
> Sent: Thursday, November 01, 2001 1:44 PM
> To: Tomcat Users List
> Subject: Someone please explain Processes
> 
> 
> Hi,
>    Recently my system (SUSE7.2, running Tomcat4.0b6, 
> Oracle8.1.7) has come
> crashing down around it's knees a few times, completely 
> locking out all
> input, even terminals (gasp horror - restart button needed) - 
> needless to
> say it's a big cause of concern.  As a result of the problems 
> I've been
> looking at the various programmes running on the machine 
> using top and other
> such packages.  The line of concern is the following one:
> 
> root  3105   3032    0    18:28   pts/3    00:00:00  
> /usr/java/jdk1.3.1/bin
> /i386/native_threads/java -Xms12m -Xmx24m -classpath 
> ./../bin/bootstrap.jar:
> /usr/local/java/lib/tools.jar:/home/spiderma/webapps/connectio
> n/WEB-INF/
> classes -Dcatalina.home=./.. 
> org.apache.catalina.startup.Bootstrap start
> 
> Other system tools indicate that this is using approximately 
> 2.7MB of system
> memory.  This wouldn't be such a concern except there are 
> *43* of these
> processes.  However, when I shut down Tomcat I barely free 32MB so it
> doesn't seem to be a huge problem.
> 
> What I'm wondering is - should there be loads of these 
> processes?  I am
> using
> a Connection pool (Karl Moss) but it shouldn't be managing 
> anything near
> like 43 connections and I'm pretty confused, but this could be it?
> 
> The system runs fine most of the time and maybe it's not even 
> this but I'd
> love to get the processes thing explained, if only to keep out system
> admin happy :)
> 
> Thanks in advance,
> Dave
> 
> 
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