Before you can investigate server latency, you need to have created an HTTP
Analytics profile that is logging statistics internally on the BIG-IP®
system. The HTTP Analytics profile must be associated with one or more
virtual servers, or an iApps®
Note: Newer browsers (Internet Explorer 9 or later, Firefox 3.6 or later, or
Chrome 14 or later) support viewing Analytics charts with no additional plug-in. If
using older browsers (Internet Explorer 8 or earlier, Firefox 3.5 or earlier, or
Chrome 13 or earlier), Adobe®
Flash® Player (version 8 or later) must be installed on the
computer where you plan to view Analytics charts.
You can review statistics concerning server latency on the Analytics charts.
Server latency is how long it takes (in milliseconds ) from the time a
request reaches the BIG-IP system, for it to proceed to the web application server, and
return a response to the BIG-IP system.
On the Main tab, click
The Overview screen opens.
From the Latency menu, choose Server Latency.
A chart shows the server latency for all applications and virtual
servers associated with all Analytics profiles.
To view server latency for a specific application, in the Details table, select
only that application.
The charts show latency only for the selected application.
To view server latency for a specific virtual server:
In the View By list, select Virtual
The charts show latency for all virtual servers.
In the Details list near the charts, click the virtual server you are
The charts show latency only for the selected virtual
If further investigation is needed, in the View By
setting, select other entities to view charts that show latency for other
collected entities included in the Analytics profile, for example, specific pool
members, URLs, countries, or client IP addresses.
Tip: If you are concerned about server latency, you can configure the
Analytics profile so that it sends an alert when the average server latency exceeds
a number of milliseconds for some period of time.