How to debug threads and kernel

Hello All,

My board communicates via RPC with other systems. Once in a while, one of the systems reports that my board holds the RPC return for more than a second (when it normally takes milliseconds).

I would like to see which thread (or in general where) the delay is.

Is there a way to see the threading information say in eclipse (or any other tool)? I would like to see if threads are running, sleeping, and how long they take.

How about other services (say portmap, inetd, etc.)

Thanks for your help.

Carlos