Tomcat Performance on a Dual Processor Win2K Machine.

2001-05-18 Thread karthik g

Hi All,
I have a java application running under this setup:
Tomcat-3.2, IIS-5.0,SQL Server-7.0 with Windows 2000 Professional on a Dual 
Processor Machine.
The problem am encountering is High CPU utilization and non-release of CPU 
by the application.
Any pointers to the cause of this problem.

Btw running the same application on a Single processor doesn't cause the 
problem.

Rgds,
Karthik
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RE: Tomcat Performance on a Dual Processor Win2K Machine.

2001-05-18 Thread Ignacio J. Ortega

Could be something on your app or in the JVM you use.

My dev setup is exactly as yours ( Dual processor ) , but i use Tomcat
3.3, i did not found that that problem with the apps i normally run on
tomcat, btw JetSpeed, CoCoon2  and my own apps ( JDBC intensive which
every DB in market ).

Saludos ,
Ignacio J. Ortega


 -Mensaje original-
 De: karthik g [mailto:[EMAIL PROTECTED]]
 Enviado el: viernes 18 de mayo de 2001 12:15
 Para: [EMAIL PROTECTED]
 Asunto: Tomcat Performance on a Dual Processor Win2K Machine.
 
 
 Hi All,
 I have a java application running under this setup:
 Tomcat-3.2, IIS-5.0,SQL Server-7.0 with Windows 2000 
 Professional on a Dual 
 Processor Machine.
 The problem am encountering is High CPU utilization and 
 non-release of CPU 
 by the application.
 Any pointers to the cause of this problem.
 
 Btw running the same application on a Single processor 
 doesn't cause the 
 problem.
 
 Rgds,
 Karthik
 __
 ___
 Get Your Private, Free E-mail from MSN Hotmail at 
http://www.hotmail.com.




AW: Tomcat Performance on a Dual Processor Win2K Machine.

2001-05-18 Thread Ralph Einfeldt

On machines with more than one processor, the possibilty
that an implementation error with synchronized will
have impact, drastically grows. So this might be the reason
for this behaviour.

There are tools out there that can detect such problems:
(At least they promise to do so)
  http://www.numega.com/devcenter/jc.shtml (Commerzial)
  http://www.ispras.ru/~knizhnik/jlint/ReadMe.htm (Free)

 -Ursprüngliche Nachricht-
 Von: karthik g [mailto:[EMAIL PROTECTED]]
 Gesendet: Freitag, 18. Mai 2001 12:15
 An: [EMAIL PROTECTED]
 Betreff: Tomcat Performance on a Dual Processor Win2K Machine.
snip/
 I have a java application running under this setup:
 Tomcat-3.2, IIS-5.0,SQL Server-7.0 with Windows 2000 
 Professional on a Dual 
 Processor Machine.
 The problem am encountering is High CPU utilization and 
 non-release of CPU 
 by the application.
 Any pointers to the cause of this problem.
snip/



RE: Tomcat Performance on a Dual Processor Win2K Machine.

2001-05-18 Thread Randy Layman


Are you sure your configuration is exactly the same?  In the readme
file, item 6.11 (I believe) mentions how a mis-configuraiton can cause
infinite loops.  If you changed your server.xml file, I would look at this.

Randy

 -Original Message-
 From: karthik g [mailto:[EMAIL PROTECTED]]
 Sent: Friday, May 18, 2001 6:15 AM
 To: [EMAIL PROTECTED]
 Subject: Tomcat Performance on a Dual Processor Win2K Machine.
 
 
 Hi All,
 I have a java application running under this setup:
 Tomcat-3.2, IIS-5.0,SQL Server-7.0 with Windows 2000 
 Professional on a Dual 
 Processor Machine.
 The problem am encountering is High CPU utilization and 
 non-release of CPU 
 by the application.
 Any pointers to the cause of this problem.
 
 Btw running the same application on a Single processor 
 doesn't cause the 
 problem.
 
 Rgds,
 Karthik
 __
 ___
 Get Your Private, Free E-mail from MSN Hotmail at 
http://www.hotmail.com.



Re: Tomcat Performance on a Dual Processor Win2K Machine.

2001-05-18 Thread Venkat

Please read recent discussion about this, missing '/' context  in server.xml
can cause high cpu utilization problems

venkat

 Hi All,
 I have a java application running under this setup:
 Tomcat-3.2, IIS-5.0,SQL Server-7.0 with Windows 2000 Professional on a
Dual
 Processor Machine.
 The problem am encountering is High CPU utilization and non-release of CPU
 by the application.
 Any pointers to the cause of this problem.

 Btw running the same application on a Single processor doesn't cause the
 problem.

 Rgds,
 Karthik
 _
 Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.


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