- # you probably want to reduce the sleep below if you enable this
- #print_cpu `/usr/sbin/iostat -C`
- print_apm `/usr/sbin/apm -alb`
- echo ""
- sleep 1
+ # instead of sleeping, use iostat as the update timer.
+ # cache the output of apm(8), no need to call that every second.
+ /usr/sbin/iostat -C -c 3600 |& # wish infinity was an option
+ APM_DATA=""
+ I=0
+ while read -p; do
+ if [ $(( ${I} % 59 )) -eq 0 ]; then
+ APM_DATA=`/usr/sbin/apm -alb`
+ fi
+ if [ $I -gt 2 ]; then
+ print_cpu $REPLY
+ print_apm $APM_DATA
+ echo ""
+ fi
+ I=$(( ${I} + 1 ));
+ done