When the Qlik Server level allows it, QSDA captures detailed data about steps involved in opening an app. You can use this data to understand where time is spent opening an app.

QSDA saves data captured from two types of app opens:

•"Cold" -- the app is not in Qlik server memory and must be read from disk.
 

•"Warm" -- the app is already in Qlik server memory but QSDA must establish a session with the app.

QSDA has open data only for app opens that QSDA initiates. If an app is already in memory because it was loaded by a Hub user for example, QSDA will not have any Cold open data for this app.