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From BARRAUD Valérie <vBARR...@aston.fr>
Subject RE: ** JVM and Processes
Date Fri, 01 Jun 2001 16:01:16 GMT

http://java.sun.com/products/jdk/1.1/packs/native-threads/README

> -----Message d'origine-----
> De:	myatt83@potsdam.edu [SMTP:myatt83@potsdam.edu]
> Date:	vendredi 1 juin 2001 17:46
> À:	tomcat-user@jakarta.apache.org
> Objet:	RE: ** JVM and Processes
> 
> Randy,
> 
> Thanks for the advice. Could you be a little more specific, though, about
> how to use green threads instead of native threads and possibly
> differences
> between the two? Thanks.
> 
>  - Adam
> 
> 
> At 10:59 AM 6/1/2001 -0400, you wrote:
> >
> >	Don't use ps - these are actually threads.  ps is showing them as
> >processes because that is what it does.  If you use green thread (as
> opposed
> >to the native threads you are using now), the display will go away, but
> you
> >will experience a slowdown (how much depends on your operating system and
> >other activity on the system).
> >
> >	Randy
> >
> >
> >> -----Original Message-----
> >> From: myatt83@potsdam.edu [mailto:myatt83@potsdam.edu]
> >> Sent: Friday, June 01, 2001 10:37 AM
> >> To: tomcat-user@jakarta.apache.org
> >> Subject: ** JVM and Processes
> >> 
> >> 
> >> Hi,
> >> 
> >> For a particular web server we are running with Tomcat 3.1, 
> >> we are having
> >> an issue with the java servlets that are running. What appears to be
> >> happening is that each time a servlet is called from the web 
> >> site, a new
> >> process is created to run the java program. When I view 
> >> processes with "ps
> >> ax", I see dozens of instances of: 
> >> /usr/java/jdk1.3/bin/i386/native_threads/java
> >>  
> >> It was briefly stated in Java Servlet Programming by Hunter & 
> >> Crawford, (c)
> >> Oreilly that 'most servlet containers execute all servlets in 
> >> a single JVM
> >> ... the exception being high-end containers that support 
> >> execution across
> >> multiple backend servers...' 
> >> 
> >> We are only using 1 web server with an average weekly load of 
> >> a couple of
> >> hundred visitors.
> >> 
> >> Any ideas as to why we would be seeing so many identical 
> >> processes and if
> >> so, how to modify that?
> >> 
> >> Thanks in advance.
> >> 
> >>   -Adam
> >> 
> >> 
> >
> >

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