Can JVM take advantage of multiple processers?

[Sean OB_1]

Hello,

We are running 11.00 and have:

Java-Runtime1-1 C.01.18.01 Virtual Machine for Java

Can this take advantage of multiple processers in an L2000?

TIA

Sean

[Sridhar Bhaskarla · Accepted solution]

Hi Sean,

Kernel takes care of developing the context and cpu switching for each process|thread. If the process is multi-threaded, yes it will be automatically taken care. JVM is not a single threaded application so it should be alright. Are you seeing one processor being heavily utilized while the others are not over an extended period?

-Sri

[Martin Johnson]

Yes, if the app is multithreaded. You can check in glance. If the process CPU is over 100% then it is multithreaded and using more than one processor.

HTH
Marty

[Sean OB_1]

I'm not seeing any particular CPU over utilized, and I wouldn't expect to anyway. Even with a single-threaded app the schedular will dole out cpu time to the next available processor.

I'm trying to nail down why an app is so slow on one of our machines.

I believe it's the unidata database which is single-threaded. I just wanted to verify that JVM was multithreaded, which means the database is the only part that isn't.

Thanks,

Sean

[Anil C. Sedha]

Hi Sean,

You may use Perfview to drill down on the usage of the CPU and processes which are causing this.

That would give you a better idea of things happening in there.

Regards,
Anil