Andrew wrote: >> Under FreeBSD system calls are currently never preempted, therefore >> non- realtime processes can starve realtime processes, or idletime >> processes can starve normal priority processes. > > Even so an idprio process can't be worse than a normal process.
Practically this means "you will still see a drop in your foreground performance." Theoretically, however, you can construct scenarios where your foreground stuff is starved ad infinitum due to priority inversion. (Since some/most non-CPU resources don't support priorities and preemption.) Lars -- Lars Eggert <[EMAIL PROTECTED]> Information Sciences Institute http://www.isi.edu/larse/ University of Southern California
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