It appears that when an app opens another app to service an activity, both apps will run at nice level 2. Since the activity app will have complete focus until the activity is complete, it might make sense to nice the primary app to a lower priority. For example, the sms app lazy loads its message threads which can be a lot of work. If the user attempts to pick a contact to send a message to, then the contact app is opened which attempts to load all of the contacts. This is also a significant amount of work. The contacts app can appear janky while the sms app is still loading its threads. It would be nice if the sms thread loading was de-prioritized while the user is interacting with contacts.
We don't have interface for nice value AFAIK.
Firefox OS is not being worked on
Status: NEW → RESOLVED
Last Resolved: 4 months ago
Resolution: --- → WONTFIX
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