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An administrator notices high CPU usage on a VM and wants to determine whether adding more vCPUs would improve performance.
Which two metrics should be analyzed to make this decision? (Choose two.)
Suggested Answer: A, B
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When diagnosing CPU performance issues, CPU Ready Time and CPU Usage are the key indicators of whether more vCPUs are needed.
Option A (VM CPU Ready Time) is correct:
High CPU Ready Time means the VM is waiting for CPU resources, indicating CPU contention.
Option B (VM CPU Usage) is correct:
If CPU usage is consistently high, adding more vCPUs may improve performance.
Option C (Host CPU Usage) is incorrect:
Host-wide CPU usage does not indicate whether a specific VM needs more vCPUs.
Option D (Host Memory Swap Out Rate) is incorrect:
Memory swapping affects RAM performance, not CPU allocation.
Nutanix Prism Central Guide Analyzing VM CPU Performance
Nutanix KB Understanding CPU Ready Time and VM Performance
43 comments · newest first
CH
Cheryl
10 months ago
Surprised no one mentioned the impact of overcommitting vCPUs!
CH
Charlie
10 months ago
Wait, why would Host Memory Swap Out Rate matter here?
MA
Marion
10 months ago
I think Host CPU Usage is also important to consider.
AR
Armanda
10 months ago
Agree, those two metrics are key for this!
SO
Sonia
11 months ago
Definitely check VM CPU Usage and CPU Ready Time!
AN
Anissa
11 months ago
I agree with the others about CPU Usage, but I'm uncertain about the second metric. Could it be something else entirely?
BL
Blossom
11 months ago
I feel like Host CPU Usage might also be relevant, but I can't recall if it directly impacts the VM's performance.
DY
Dyan
11 months ago
I remember practicing a question like this where CPU Ready Time was definitely one of the metrics to check.
JO
Josue
11 months ago
I think we should look at VM CPU Usage and VM CPU Ready Time, but I'm not entirely sure if both are necessary.
CA
Casey
12 months ago
I'm a bit confused. Shouldn't we also look at the host memory swap out rate? Wouldn't that give us more information about the overall system performance?
ET
Ettie
12 months ago
Okay, I think I've got this. We need to analyze the VM's CPU usage and CPU ready time to see if the CPU is the bottleneck. Adding more vCPUs could help if the CPU is maxed out.
OW
Owen
1 year ago
Hmm, I'm not sure about this one. Do we also need to consider the host CPU usage? I want to make sure I'm not missing anything.
DA
Daniela
1 year ago
This seems straightforward - we need to look at the VM's CPU usage and CPU ready time to determine if adding more vCPUs would help.
LA
Lashawn
1 year ago
Alright, alright, let's get serious here. VM CPU Ready Time and Host CPU Usage are the two key metrics to focus on. Everything else is just noise.
MA
Mammie
1 year ago
D) Host Memory Swap Out Rate
AN
Annett
1 year ago
I agree, those are the two main metrics to consider.
JU
Juan
1 year ago
C) Host CPU Usage
NA
Nan
1 year ago
A) VM CPU Ready Time
JA
Jamal
1 year ago
Hold up, hold up. What if the administrator is just really bored and wants an excuse to add more vCPUs? *winks* Just sayin'.
CH
Chaya
1 year ago
C) Host CPU Usage
MI
Ming
1 year ago
A) VM CPU Ready Time
HU
Hubert
2 years ago
I dunno, man. Shouldn't we also look at the host memory usage? Maybe the poor VM is just starving for resources, ya know? *scratches head*
ED
Edna
1 year ago
True, we should also check if the VM is actually using the CPU efficiently and if the host is swapping memory.
AL
Alfreda
1 year ago
D) Host Memory Swap Out Rate
JE
Jettie
1 year ago
B) VM CPU Usage
RA
Rana
1 year ago
Yeah, those are good metrics to start with. Let's see if the CPU is waiting too long or if the host is overloaded.
TI
Tijuana
1 year ago
C) Host CPU Usage
ST
Staci
1 year ago
A) VM CPU Ready Time
EL
Elvis
1 year ago
True, we should also check if the VM is actually using the CPU efficiently and if the host is swapping memory too much.
AU
Audria
1 year ago
D) Host Memory Swap Out Rate
CH
Chaya
1 year ago
B) VM CPU Usage
EL
Elvis
1 year ago
Yeah, those are good metrics to start with. Let's see if the CPU is waiting too long and if the host is overloaded.
DE
Dexter
1 year ago
C) Host CPU Usage
BR
Brice
1 year ago
A) VM CPU Ready Time
JU
Jutta
2 years ago
Yes, analyzing both VM CPU Ready Time and Host CPU Usage would give us a comprehensive view.
SO
Soledad
2 years ago
B and C, hands down. Can't ignore the actual CPU usage on both the VM and the host. That's the core of the problem, right?
AN
Annamae
2 years ago
I also think we should look at Host CPU Usage to get a better understanding.
MI
Miriam
2 years ago
VM CPU Ready Time and Host CPU Usage for sure! Gotta analyze those metrics to see if adding more vCPUs will really help. Anything else is just a distraction.
AR
Arlen
1 year ago
Let's focus on VM CPU Ready Time and Host CPU Usage to make an informed decision about adding more vCPUs.
JO
Joaquin
1 year ago
Definitely, those two metrics will give us a good indication of whether adding more vCPUs is necessary.
CO
Cory
1 year ago
I agree, VM CPU Ready Time and Host CPU Usage are key metrics to consider.
VA
Val
2 years ago
I agree, that's an important metric to consider.
MA
Malcolm
2 years ago
I think we should analyze VM CPU Ready Time.