Messages in this thread | | | Date | Mon, 10 Feb 2003 14:58:22 +0100 | From | Jörn Engel <> | Subject | Re: interrupt latency ? |
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On Fri, 7 February 2003 18:50:52 +0000, SA wrote: > > What latency should I expect for hardware interrupts under k2.4 / i386 ? > > > ie how long should it take between the hardware signalling the interrupt and > the interrupt handler being called?
Upper limit should be ~10,000 clock cycles. Doing some tests on ppc, some rtos was able to react within 200 cycles, linux took 1000 or so. Add whatever time you handler (the c code) takes.
Jörn
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