Forum Discussion
NimbostratusAVR Metric Definitions
I can not find a complete list of all the AVR Metric definitions and was hoping someone could point me in the correct direction. For example AVG Server Latency is defined by I could not find any references to what AVG Client Network Latency or AVG Server Network Latency is?
What are causes for a N/A value for a given metric? I could see AVG being N/A if the sample pool is 1 transaction but for example I have a lot of URLs that show N/A for AVG Page Load Time or AVG Client TTFB.
Thank you
2 Replies
Nathan_F__F5_Employee
Hi liamterry,
I've been doing some digging on this and I think I may have an answer for you. The documentation is not very clear but I think the "Avg Server Latency" applies specifically to HTTP traffic whereas "Avg Server Network Latency" applies to non-HTTP traffic. I am basing this off of the following release notes.
On that page you will see two sections titled "AVR :: Merged metrics to HTTP statistics tables" and "AVR :: New and updated metrics". As you will see, the HTTP section lists the Avg Server Latency while the New Metrics section lists the "Network" Server Latency.
Regarding the N/A values for page load times and client TTFB, are you seeing those values for a virtual server that doesn't serve HTTP traffic by chance?
- liamterry
Thank your Nathan for your response! That link is very useful.
For the N/A values, the virtual server is serving out HTTPS traffic with the F5s doing the SSL offloading, I have not tested it with just HTTP traffic yet but I will setup a new virtual server and test.
