Messages in this thread | | | Subject | Re: PREEMPT_RT vs I-PIPE: the numbers, part 2 | From | Lee Revell <> | Date | Wed, 22 Jun 2005 13:17:40 -0400 |
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On Wed, 2005-06-22 at 11:31 -0400, Karim Yaghmour wrote: > max_ipipe_delay = 27.5us > average_ipipe_delay = 7us > max_preempt_delay = 55us - max_ipipe_delay = 27.5us > average_preempt_delay = 14 us - average_ipipe_delay = 7us
Ingo, what's the status of putting irq 0 back in a thread with PREEMPT_RT? IIRC this had some adverse (maybe unfixable?) effects so it was disabled a few months ago.
I don't think there's much point in comparing i-pipe to PREEMPT_RT if we know that 21usec pipeline effect from the timer IRQ (see list archives) is still there.
Lee
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