tomcat6 and java-1.7.0-openjdk.x86_64 eats all cpu

[Danik]

have installed centos 64 standart openvz container
installed tomcat6 and java-1.7.0-openjdk.x86_64

service tomcat6 start
eats 100% cpu with java process

is there any solution?

 

[tom]

assign two cpu´s to the container and test again.

 

[Danik]

have already tried 1,2,4,8 cpus with the same result

also have tried using cpumask with no luck

 

[malakatronis]

Try with another java version and check tomcat log. Tomcat6 is power hungry, especially when combined with wrong java version or when loading a misconfigured application.

 

[Danik]

have tried the same configuration in vmware and it works ok
on slower hardware with idle cpu

I have provided i7 8 cores with 10gb of ram
and it just loads all cpu

 

[malakatronis]

If it works with the same configuration in Vmware, it's hard to tell. Maybe you can try to install CentOS on KVM instead of using a container and see if it keeps eating all CPU.

 

[Danik]

under kvm all is working ok
and cpu is idle

 

[malakatronis]

It has to be a kernel related issue then.

What is the kernel in the KVM machine?

 

[Danik]

2.6.32-12-pve

 

[malakatronis]

2.6.32-12-pve

This is inside the VZ container or inside the KVM machine? I assume you are referring to VZ. If so, you may need to update Proxmox to its latest version (you'll get 2.6.32-19-pve).

 

[Danik]

it is iside openvz container I have installed it inside kvm just to test
and yes after kernel update to 2.6.32-19-pve it works ok

so the problem was in kernel
thanks