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Posted to users@tomcat.apache.org by Sascha Wehnert <Sa...@torexretail.de> on 2007/01/22 14:00:51 UTC

java.exe cause high cpu utilization

Hi folks, 

 

Problem: As soon as I access anything within tomcat (manager, probe…) java.exe 

starts to stress the cpu. If I access the applications via port 8080 and bypass 

Apache, everything is fine. 

 

So my assumptions is that something within my Apache configuration is wrong but 

I cannot see what. This is an extract from my httpd.conf for mod_jk:

 

LoadModule jk_module modules/mod_jk.so

 

<IfModule mod_jk.c>

  JkWorkersFile /lucaswm/apache2/conf/workers.properties

  JkLogFile logs/mod_jk.log

  JkLogLevel info

  JkLogStampFormat "[%a %b %d %H:%M:%S %Y] "

 

  JkMount /manager/* wintomjava

  JkMount /probe/* wintomjava

  JkMount /standard2/* wintomjava

</IfModule>

 

workers.properties file looks like this:

 

worker.list=wintomjava

worker.wintomjava.type=ajp13

worker.wintomjava.port=8009

worker.wintomjava.host=192.168.106.144

 

I also tried mod_jk 1.2.20 but still no luck. For testing I also setup a different tomcat on 

the same system but this one showed exactly the same behaviour. 

 

System configuration (VMware, w2k3, 1GB RAM, 6GB disk space):

 

Apache 2.0.59

Mod_jk 1.2.19

Tomcat 5.5.20

java version "1.5.0_09"

Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_09-b03)

Java HotSpot(TM) Server VM (build 1.5.0_09-b03, mixed mode)

 

Your help and ideas are greatly appreaciated! 

 

Regards, 

 

Sascha

AW: java.exe cause high cpu utilization

Posted by Sascha Wehnert <Sa...@torexretail.de>.

Hi, 

looks like my tcnative-1.dll (1.1.4) was the source of all evil.
Switched to 1.1.6 and no problems so far...

Regards, 

Sascha

> -----Ursprüngliche Nachricht-----
> Von: Sascha Wehnert [mailto:Sascha.Wehnert@torexretail.de]
> Gesendet: Montag, 22. Januar 2007 14:01
> An: Tomcat Users List
> Betreff: java.exe cause high cpu utilization
> 
> Hi folks,
> 
> 
> 
> Problem: As soon as I access anything within tomcat (manager, probe…)
> java.exe
> 
> starts to stress the cpu. If I access the applications via port 8080 and
> bypass
> 
> Apache, everything is fine.
> 
> 
> 
> So my assumptions is that something within my Apache configuration is
> wrong but
> 
> I cannot see what. This is an extract from my httpd.conf for mod_jk:
> 
> 
> 
> LoadModule jk_module modules/mod_jk.so
> 
> 
> 
> <IfModule mod_jk.c>
> 
>   JkWorkersFile /lucaswm/apache2/conf/workers.properties
> 
>   JkLogFile logs/mod_jk.log
> 
>   JkLogLevel info
> 
>   JkLogStampFormat "[%a %b %d %H:%M:%S %Y] "
> 
> 
> 
>   JkMount /manager/* wintomjava
> 
>   JkMount /probe/* wintomjava
> 
>   JkMount /standard2/* wintomjava
> 
> </IfModule>
> 
> 
> 
> workers.properties file looks like this:
> 
> 
> 
> worker.list=wintomjava
> 
> worker.wintomjava.type=ajp13
> 
> worker.wintomjava.port=8009
> 
> worker.wintomjava.host=192.168.106.144
> 
> 
> 
> I also tried mod_jk 1.2.20 but still no luck. For testing I also setup a
> different tomcat on
> 
> the same system but this one showed exactly the same behaviour.
> 
> 
> 
> System configuration (VMware, w2k3, 1GB RAM, 6GB disk space):
> 
> 
> 
> Apache 2.0.59
> 
> Mod_jk 1.2.19
> 
> Tomcat 5.5.20
> 
> java version "1.5.0_09"
> 
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_09-b03)
> 
> Java HotSpot(TM) Server VM (build 1.5.0_09-b03, mixed mode)
> 
> 
> 
> Your help and ideas are greatly appreaciated!
> 
> 
> 
> Regards,
> 
> 
> 
> Sascha
> 
> 
> 
>