List of RRD Graph DataSource(ds)

i founded from source code :)

"DS:maxcpu:GAUGE:120:0:U",
829 "DS:cpu:GAUGE:120:0:U",
830 "DS:maxmem:GAUGE:120:0:U",
831 "DS:mem:GAUGE:120:0:U",
832 "DS:maxdisk:GAUGE:120:0:U",
833 "DS:disk:GAUGE:120:0:U",
834 "DS:netin:COUNTER:120:0:U",
835 "DS:netout:COUNTER:120:0:U",
836 "DS:diskread:COUNTER:120:0:U",
837 "DS:diskwrite:COUNTER:120:0:U",