#!/usr/bin/gnuplot
set multiplot layout 3,1
unset xtics
plot fname using 2:xticlabels(1) with lines t "Memory%"
plot fname using 3:xticlabels(1) with lines t "Disk%"
plot fname using 4:xticlabels(1) with lines t "CPU%"
pause 0.5 
reread
set autoscale