Could the perfdata be the explanation ? (only 3 values, missing the two last one - min and max references )
but so is there any way ( a rule / a mk file processed / a plugin file ?) where i could inject thoses 2 values ( like 0,500), for the graph start generating ? i look into share/check_mk/checks/hr_ps but i didnt see any perfdata sent from this one… so i suspect perfdata added from somewhereelse…
Regards