Is it possible to limit a thread to use say max 25% of the CPU? Or is giving the thread a lower priority the only way to go here? What I'm trying to do is avoid lag in the main program while having a secondary CPU-consuming thread running in parallell.
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The thing about thread priorities as I see it is that while you may have a particular amount of usage in mind, all prioritising seems to do is either allow your thread to take over the CPU or get almost completely ignored by it. Trying to code a task scheduler that runs thread THIS_MUCH_AND_NO_MORE is more trouble than it's worth.
If you want fairly reliable fixed usage, you're gonna have to get clever with the sleep() function and units of about 100ms.
