Geneos - CPU - CPU plugin under the hood: AIX

The CPU count is parsed from the output of the commands from

/usr/sbin/lscfg -l proc\*
/usr/sbin/lsattr -E -l sys0

The percentUsertime, percentSystemtime, percentWaittime, percentIdletime are taken from the computed average from perfstat_cpu values:

user	Number of clock ticks spent in user mode
sys	Number of clock ticks spent in system (kernel) mode
idle	Number of clock ticks spent idle with no I/O pending
wait	Number of clock ticks spent idle with I/O pending

To indicate if the CPU is online, the plugin checks the difference of values (user, sys, idle, wait) from the previous sample (ticks). If the computed value was 0 or less, that CPU will be set as offline and all usage stats are set to 0%.

if (dDiffTotal <= 0.0)
  {
      pCpu->bOnline = false;
      pCpu->dUser = pCpu->dSys = pCpu->dIdle = pCpu->dWait = 0.0;
  }

CPU percentUlitilization is computed as (  100 - perfstat_cpu idle ) value per cpu

double dUtil = 100 - pCpu->dIdle;

CPU clockspeed is derived from perfstat_cpu_total then the value is divided by 1000000.0 

double(tot.processorHZ) / 1000000.0