#!/bin/rc
# collect cpu load data from /dev/sysstat to a file -->  epoch date - load
# resume those files with n=(last epoch) and d=(date filename)

host=`{cat /dev/sysname}

switch($#*){
	case 0
		n=0
		d=`{date -n}
	case 2
		n=$1
		d=$2
	case *
		echo usage: $0 [number epoch]
		exit
}

touch /usr/$user/lib/load-$host-$d


while(){
	l=`{awk '{print $8/1000.0}' /dev/sysstat}
	echo $n ' ' $l(1) >>/usr/$user/lib/load-$host-$d
	n=`{echo $n '+' 5 | hoc}
	sleep 5
}