Questions on Systemtap performance

[Frank Ch. Eigler]

Hi -

> > I run a script with the -t option and get the following result:
> > probe kernel.function("netif_
> > receive_skb").return (../path/yanshi.stp:32:1), hits: 38442, *cycles:
> > 549min/2364avg/43911max*
> >
> > what does the *cycles: 549min/2364avg/43911max *part mean? since its
> > measurement is min

The measurements are in "cycles", i.e., the basic clock rate of the CPU,
and among the 38442 probe hits, the systemtap-generated code consumed
549 cycles minimum, 2364 average, 43911 maximum.

- FChE