[...snip...] 3) I've added iostatcpu in TEST2RRD :
TEST2RRD="cpu=la......iostatcpu=ncv"
and added in hobbitserver.cfg :
NCV_iostatcpu="cpu_usr:GAUGE,cpu_sys:GAUGE,cpu_wait:GAUGE,cpu_idl:GAUG E"
4) I've renamed [vmstat1] into [iostatcpu] But...there's no rrd file created. What else do I need to do ?