Hello,

I have a related question. I am modifying systimer() [the clock interrupt 
handler] and want to add a couple of mem-to-mem copys [copy from userspace 
to kernel space] in the handler. is it affordable to copy in about 100 
bytes twice [and copy out a few bytes] within the routine if it is being 
called every one second?

The code is on AIX -but I expect similar performance on most versions of 
UNIX.

thanks for any inputs.
regards
-kamal