Re: [Ganglia-developers] hyperthreading & cpu_num patch.

[James M. <Jam...@bi...>]

Point taken on the configurability.

I think a strong argument can be made for the number of cores as being the 
default for cpu_num. 
However, it's also quite sensible to have the other two measures: number 
of physical CPUs,
and number of virtual CPUs (what gmond currently reports).

How about, instead of cpu_num, reporting:

   cpu_count_cores
   cpu_count_physical
   cpu_count_virtual

They are all very easily calculated based on the contents of /proc/cpuinfo 
under Linux. I am not
as certain how one would go about calculating all three in other 
environments...

Given that one had all 3, one could make the load calculation configurable 
thus:

   metric {
      name = "load_one"
      value_threshold = "1.0"
      basis = "cpu_count_cores"
   }

Comments?