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From "Duan, Nick" <ND...@mcdonaldbradley.com>
Subject RE: heap size problems (speed) [2]
Date Mon, 28 Nov 2005 23:14:43 GMT
1024 K is still relatively small compare to a heap size of 512M.  The
fact is that Duron is really the low-end of AMD processor family.  It
shouldn't be used for any serious computing purpose.  I'd like to
suggest doing the test at least on an Athlon.  Hardware is really cheap
nowadays.

ND 

-----Original Message-----
From: Cristian [mailto:cs@nightwish.eu.org] 
Sent: Monday, November 28, 2005 1:27 PM
To: Tomcat Users List
Subject: Re: heap size problems (speed) [2]


----- Original Message ----- 
From: "Duan, Nick" <NDuan@mcdonaldbradley.com>
To: "Tomcat Users List" <users@tomcat.apache.org>
Sent: Monday, November 28, 2005 7:30 PM
Subject: RE: heap size problems (speed) [2]


> Were you using the right JVM?  There were two JDK download for LINUX
on
> Sun's web site.

I have downloaded : J2SE(TM) Development Kit 5.0 Update 5
Linux self extracting file (although I think I should have get the rpm).

I've extrated it in a separate directory and set JAVA_HOME in tomcat to
point to that dir.

Does it make any difference other than the fact that this way it is not
rpm compliant?

> The main problem may be your AMD Duron processor which has a very
small
> cache size (I believe it's about 512K).  Once the processor cache
> reaches its limit, increasing the JVM heap size won't be very
effective.

This is even worse for my AMD Duron
cache size      : 64 KB

but on the other machine I have :
cache size      : 1024 KB
and still get the same results.

Cristian



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