To balance data collection with device bandwidth and performance, performance analysis uses event-based sampling. When you need complete data, for example, to test or reproduce issues on key devices, you can add a device's Utdid to the whitelist. After you add a device, performance analysis collects all its performance data with 100% sampling. You can add a maximum of 50 Utdids to the whitelist.
Add to whitelist
In the left navigation pane, select Performance Analysis > Whitelist Configuration.
In the Add to Whitelist dialog box, enter the Utdid.
Click OK to add the Utdid to the whitelist.
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