As the title says, we just updated our 3 node prod cluster from 24 cores to 64 cores. Now nmon will not gather data on the cpu utilization. It shows "please wait gathering data" when you type nmon, then hit the 'c' character for current CPU. It does show two different screens, The first screen has always been usual, the "Gathering data" screen, then it just shows "nan" for all the values. I attached a screenshot and am willing to give more information, this behavior is occurring across all 3 nodes in this cluster.

Although, we also had another cluster we upgraded from 16 to 24 cores.. yet no nmon impact.

Is there something nmon can't handle with a specific number of cores?

Here is info on the processor from /proc/cpuinfo(this is processor 64, all identical)


processor : 63
vendor_id : GenuineIntel
cpu family : 6
model : 46
model name : Intel(R) Xeon(R) CPU X7550 @ 2.00GHz
stepping : 6
cpu MHz : 1997.878
cache size : 18432 KB
physical id : 3
siblings : 16
core id : 11
cpu cores : 8
apicid : 119
fpu : yes
fpu_exception : yes
cpuid level : 11
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr sse4_1 sse4_2 popcnt lahf_lm
bogomips : 3995.80
clflush size : 64
cache_alignment : 64
address sizes : 44 bits physical, 48 bits virtual
power management: [8]


Any info at all would be great.

Thanks all!

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