Subject: Re: QUESTION: real-time, interrupt latency & atom process
To: None <>
From: David Querbach <>
List: tech-kern
Date: 11/14/2001 08:25:29
For what it's worth, we just measured the interrupt latency on our MPC8260
(embedded powerpc) port.  At a CPU clock of 166 MHZ, the highest priority
interrupt service routine begins to run within 5 to 12 usec after the event.

In our port, we reworked the interrupt routing code for generality; you
could probably do better if the routing code was optimised for speed instead.


David Querbach
Real-Time Systems Inc.