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bbfa235
(Get the code!)
The duplicate status is not wrong but the information in that bug is dense. Please read it for a more in depth answer
1. a simple change does not necessarily cause all policy to be recompiled. Only policy that is dependent on the change is recompiled.
2. Yes policy compilation can be sped up. There have been a steady stream of improvements, but the low hanging fruit has been fixed. So do not expect dramatic improvements any time soon.
3. Policy compile does not have to be done at boot, it can be done at update time or when an application is launched, and for policy that is part of a system update on the server as part of the image build. However moving compile to application launch time would slow down application launch further which is already considered slow.