You can use the following test to check how quickly Discover is processing hits. In an ideal system, the length of time between the DNCA capturing a hit and it appearing in the Short Term Canister is a few seconds.
About this task
Note: If the Short Term Canister is spooling hits to disk,
processing is delayed even more, and this test is not a reliable indicator
of normal system performance.
Procedure
- Login to the Discover Portal.
- To display the currently active sessions, select .
Sort the display order by Time.
Note: These operations
may take up to five seconds to complete and may introduce a lag factor
in the performance measurement.
- Open a clock tool in your computer, which displays the
seconds hand.
- Record the start time of a new session.
- Continue refreshing the Active Sessions page until a new session
begins.
- Start a new session by browsing to the web application through
a new browser window.
- As soon as a new session appears, note the current value
of the seconds hand.
-
Open the same session in Replay.
- In the first hit of the session, open the request.
- In the
[timestamp] section, review the
value for ResponseTimeEx. - The difference in seconds between the above value and the time when the session begun provides a close approximation of the time Discover currently requires to process a new hit into the Short Term Canister.