Hi Rajashehar,
This is specifically related to the question you mentioned right in the starting.
Q1) What is the meaning of the Bad Result Event or what does it represents?
Ans->
The Bad Result event is generated when we receive what we perceive to be unreliable data. This is set when the sum of these values? dnsRtt + tcpConnectRtt + downLoadRtt are greater or less than 2 ms from the average result value.
So for the Bad result event [A]: 1+1+19=21 which is greater than 2ms than the average of 17
Whereas, for the normal result event [B]: 1+1+18=20 which is equal to the average of 20
What skewed the results on the Bad Result event was one exceptionally quick response of 2ms. Since it is, so far out of the "norm" we throw the result away as potentially unreliable.
Causes of this problem:
~~~~~~~~~~~~~~~~~~~~~~~~~
The two events below are seen and the data in each looks very similar, yet one event is labeled as a "Bad Result" event.
[A]
~~~
[Event Type 0x4560056]
SPM HTTP Bad Result Event -
Test Name: ehealth WebServer
Test Host Address: 101.21.13.9
Source Address: 101.21.13.9
Destination Address: http://ehealth01.ca.com
Test Type: HTTP
Layer 4 Port Number: 0
Current Test Interval: 120 seconds
Packet Size: 0
Sample Count: 5
Test Host Position: EndPoint
DNS Lookup String:
Approximate round trip times in milli-seconds: Min = 2, Avg = 17, Max = 33
DNS Resolution Time (msec): 1
TCP Connect Time (msec): 1
HTTP Page Download Time (msec): 19
Timeout data filtered: TRUE
[B]
~~~~
[Event Type 0x456002e]
SPM HTTP Result Event -
Test Name: ehealth WebServer
Test Host Address: 101.21.13.9
Source Address: 101.21.13.9
Destination Address: http://ehealth01.ca.com
Test Type: HTTP
Layer 4 Port Number: 0
Current Test Interval: 120 seconds
Packet Size: 0
Sample Count: 5
Test Host Position: EndPoint
DNS Lookup String:
Approximate round trip times in milli-seconds: Min = 17, Avg = 20, Max = 33
DNS Resolution Time (msec): 1
TCP Connect Time (msec): 1
HTTP Page Download Time (msec): 18
Timeout data filtered: TRUE
Best Regards
Vanshdeep Khurana