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The Server RTT in the End-to-End Timing graph has increased significantly while Client RTT and App Response times have remained unchanged. What is the most likely explanation for the issue?
Suggested Answer: D
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In Avi analytics, Server RTT represents the round-trip latency between the Service Engine and the backend pool servers. VMware Avi documentation states that an abnormally high Server RTT can indicate a network issue between the Service Engine and the servers. Because Client RTT and App Response remain unchanged, the issue is most likely on the network path between the Service Engine and one or more pool servers.
24 comments · newest first
SK
Skye
3 days ago
I think it's option D. Networking issues can cause high RTT.
JE
Jennie
8 days ago
High CPU utilization on pool servers could also explain it.
CA
Catarina
13 days ago
Wait, how can the Client RTT stay the same if Server RTT is up?
MA
Mabel
18 days ago
Could be the Service Engine getting overloaded too.
TR
Tresa
23 days ago
I think it's more likely a database server problem.
VI
Vincenza
28 days ago
Definitely sounds like a networking issue.
AL
Alita
1 month ago
Not so sure about that, could be a database issue instead.
RO
Rossana
1 month ago
Wait, how can Client RTT stay the same if Server RTT is up?
CO
Colby
1 month ago
High CPU on pool servers is a possibility too.
TY
Tyra
2 months ago
I think it could be the Service Engine getting overloaded.
GR
Gregg
2 months ago
Definitely sounds like a networking issue.
AN
Annelle
2 months ago
Not sure about that, could it be a database issue instead?
DU
Dudley
2 months ago
Wait, how can RTT go up without affecting Client RTT?
LA
Latrice
2 months ago
High CPU on pool servers could also be a factor.
LO
Lonny
2 months ago
I agree, D makes the most sense here.
AL
Albina
3 months ago
Sounds like a networking issue to me.
VI
Vincenza
3 months ago
Networking issues seem like a plausible explanation, especially if the Client RTT and App Response times are stable. I need to think more about how that would manifest in the graph.
SA
Sanda
3 months ago
I think the Service Engine being overloaded could definitely lead to increased RTT, but I’m not completely confident about how that interacts with the other metrics.
SY
Sylvie
3 months ago
This question feels similar to one we practiced where a database issue was the root cause. I wonder if that's the case here too.
MO
Moira
3 months ago
I remember we discussed how high CPU utilization on servers can affect response times, but I'm not sure if that would specifically cause an increase in Server RTT.
MA
Marguerita
4 months ago
I'm leaning towards option D since networking issues can often cause delays without affecting client-side metrics.
LA
Laila
4 months ago
I think I read that if the Service Engine gets overloaded, it can cause increased RTT. So maybe option C is the answer?
DO
Donte
4 months ago
This sounds similar to a practice question we did about database performance affecting response times. Could it be option B?
GL
Glenn
5 months ago
I remember studying how server performance can impact RTT, but I'm not sure if it's always due to CPU issues.