Messages in this thread | | | Date | Tue, 10 Oct 2000 15:34:25 +0200 | From | "Andi Kleen" <> | Subject | Re: lowish-latency patch for 2.4.0-test9 |
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On Wed, Oct 11, 2000 at 12:20:16AM +1100, Andrew Morton wrote: > b): disabling local interrupts prior to the final need_resched > check to make this test atomic wrt interrupts. RESTORE_ALL > will do the right thing and an intervening smp_send_reschedule() > will be blocked until the return to user space. > > Seems too simple...
I think with that a
main() { for(;;) getpid(); }
program could kill a lot of your interrupt latency.
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