Before：

# /usr/local/rrdtool/bin/rrdtool info /var/www/html/rra/71/2995.rrd
ds[traffic_in].min = 0.0000000000e+00
ds[traffic_in].max = 1.0000000000e+07
ds[traffic_out].min = 0.0000000000e+00
ds[traffic_out].max = 1.0000000000e+07