stdbuf -i0 -o0 -e0 ifstat -n -t -b | stdbuf -i0 -o0 -e0 tail -n+3 |
(outsatsecs=0; insatsecs=0; while read ts kbpsin kbpsout ; do
if [[ $kbpsout -ge 900000 ]] ; then ((outsatsecs++)); fi
if [[ $kbpsin  -ge 900000 ]] ; then ((insatsecs++)) ; fi;
echo 'nic_saturated_seconds{dir="out"}' ${outsatsecs}'\nnic_saturated_seconds{dir="in"}' $insatsecs | tee >(sponge /var/lib/prometheus/node.d/saturated.prom) ; 
done)