How to find the processes running in system mode or wio?

With sar I can get an overview about the cpu-load divided in system mode, user mode and wait on i/o.

While I have a performace problem on Solaris systems, top or sdtprocess would show those processes, which are using cpu. There is no distinction between user-mode and system-mode.

How can the processes be identified causing wio or which are running in system mode?

(Solutions for Solaris 8-10 and Linux would be of interest.)

Thanks for any hints,

Hermann

[501 byte] By [herb.] at [2007-11-25 23:39:35]