An administrator is investigating virtual machine performance issues using ESXTOP. The ESXi host does not
have hyperthreading enabled.
Which statistics would be relevant for troubleshooting VM performance issues?
A.
%RDY
B.
%IDLE
C.
%RUN
D.
CORE UTIL(%)
Explanation:
http://www.computerweekly.com/tip/Troubleshooting-VM-performance-capacity-management-woes
A
0
0
A
0
0
Esxtop is used to monitor remotely for obtaining an instant snapshot of counter information via the command line interface
100% = %RUN + %RDY + %CSTP + %WAIT
%RDY:
Percentage of time the resource pool, virtual machine, or world was ready to run, but was not provided CPU resources on which to execute.
%RUN:
Percentage of total time scheduled. This time does not account for hyperthreading and system time. On a hyperthreading enabled server, the %RUN can be twice as large as %USED.
CORE UTIL(%):
Percentage of CPU cycles per core when at least one of the PCPUs in this core is unhalted, and its average over all cores.
This statistic only appears when hyperthreading is enabled. (D wrong)
https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.monitoring.doc/GUID-AC5FAD2D-96DE-41C4-B5C6-A06FE65F34C6.html
4
0
Run – Amount of time the virtual machine is consuming CPU resources.
Wait – Amount of time the virtual machine is waiting for a VMkernel resource.
https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1017926
0
0
im torn between A and C
I might go with C
– host does not hyperthreading
– amount of time the virtual is consuming CPU resources
0
0
Option A)
https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.monitoring.doc/GUID-AC5FAD2D-96DE-41C4-B5C6-A06FE65F34C6.html
%RDY
Percentage of time the resource pool, virtual machine, or world was ready to run, but was not provided CPU resources on which to execute.
100% = %RUN + %RDY + %CSTP + %WAIT
The option D does not seem to be relevant on this, see below:
CORE UTIL(%)
Percentage of CPU cycles per core when at least one of the PCPUs in this core is unhalted, and its average over all cores.
This statistic only appears when hyperthreading is enabled.
In batch mode, the corresponding CORE UTIL(%) statistic is displayed for each PCPU. For example, PCPU 0 and PCPU 1 have the same the CORE UTIL(%) number, and that is the number for core 0.
0
0