Good you're thinking out the box. That pause might not be a problem, though. The pauses that are a problem when the malicious app can control the timing with an external observer seeing those manipulations. The OS scheduler is usually independent of secret processing. It's just doing it's own thing causing pauses that don't tell you about the secret itself. Theoretically, there could be an esoteric attack in some situation where an OS scheduler would accidentally leak somethinh or be activated to leak something. Not popping into mind righg now, though.
