Messages in this thread |  | | Date | Tue, 27 Aug 2002 13:54:01 -0600 | From | yodaiken@fsmlabs ... | Subject | Re: interrupt latency |
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On Tue, Aug 27, 2002 at 02:01:43PM -0400, Richard B. Johnson wrote: > This cannot be. A stock kernel-2.4.18, running a 133 MHz AMD-SC520, > (like a i586) with a 33 MHz bus, handles interrupts off IRQ7 (the lowest > priority), from the 'printer port' at well over 75,000 per second without > skipping a beat or missing an edge. This means that latency is at least > as good as 1/57,000 sec = 0.013 microseconds.
Assuming you mean 75,000 then ... Thats 0.013 MILLISECONDS which is 13 microseconds and its not likely. I bet that your data source drops data or looks at some handshake pins on the parallel connect.
-- --------------------------------------------------------- Victor Yodaiken Finite State Machine Labs: The RTLinux Company. www.fsmlabs.com www.rtlinux.com
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