Testing Discover Processing Performance

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

  1. Login to the Discover Portal.
  2. To display the currently active sessions, select Active > Portal. 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.
  3. Open a clock tool in your computer, which displays the seconds hand.
  4. 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.
  5. As soon as a new session appears, note the current value of the seconds hand.
  6. Open the same session in Replay.
  7. In the first hit of the session, open the request.
  8. In the [timestamp] section, review the value for ResponseTimeEx.
  9. 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.