** running time analysis **

[Siping Liu]

I am using the "time" command monitoring the running time
of my program. I wonder why for the same program and the
same input data, the user's time differs from each running
at about 10%. I imagine the biggest system environment
influence would be the system page faults, which should be counted
in the system's time. So what else can create this running
time difference???

Thanks for your attention.

siping at cerc.wvu.wvnet.edu