measure time less than 1 jiffie?

Sushil Agrawal (sushil@cse.iitk.ac.in)
Wed, 8 Dec 1999 15:10:19 +0530 (IST)

Hi all,
I am trying to measure the timings of some kernel routines. I examined
the value of 'jiffies' for that. But many routines (almost all, including
the major ones like fork, exit and exec) return before a jiffie expires,
which is understandable. (because 1 jiffie is 10ms). Therefore i am unable
to get the exact timings.

Can someone tell me how to measure the timings, inside the kernel, which
are less than 1 jiffie (in microseconds). I am running linux-2.2.9 kernel.

Thanks,
Sushil.

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