can we measure the traffic between user and kernel mode

[Michael Blizek]

Hi!

On 11:42 Thu 27 Jan     , loody wrote:
> Dear all:
> Is there any directory under proc/sys or tools that can help us to
> measure the traffic between user and kernel mode?
> (such as ioctl, open, close, etc.)

If you are interested in number of system calls per second, you can run dstat.
However I do not know a way to measure the traffic in bytes/sec.

	-Michi
-- 
programing a layer 3+4 network protocol for mesh networks
see http://michaelblizek.twilightparadox.com