[Asterisk-Users] TDM400P: Sharing IRQS?

Andrew Kohlsmith akohlsmith-asterisk at benshaw.com
Thu Jun 3 10:54:03 MST 2004


On Thursday 03 June 2004 12:51, Isamar Maia wrote:
> Finally, TDM400P also has IRQ issues, right?

No, the TDM400P does not have IRQ "issues" -- it's a simple matter of timing 
-- When you're spewing out 8000 interrupts a second (or is it 1000 with 8 
frames each, I don't remember) and the computation that must be performed on 
each interrupt must be done in a timely matter, sharing interrupts leads to 
jittery realtime performance. 

This is true in any system: PC, Embedded, custom.  You can only move so fast.  
If you need realtime performance, you can't share interrupts with another 
device that frequently produces them.  It Just Doesn't Work.

-A.



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