[Asterisk-Users] How many X100P's in a system..

[Steven Critchfield]

On Thu, 2003-05-22 at 17:18, asterisk at sasami.anime.net wrote:
> On Thu, 22 May 2003, Robert Hajime Lanning wrote:
> > I would expect, one of the issues would be latency.  Shared IRQs introduce
> > additional latency for service on that IRQ.
> 
> When you have multiple cards in a system, shared IRQs are often more 
> efficient than single ones. Since you can service multiple cards in a single 
> interrupt.
> 
> It would thus be an advantage for a busy system with multiple x100p's. 
> That is, if the x100p actually supported irq sharing to pci spec.
> 
> I dont think a few hundred extra cycles out of 1billion+/sec (eg most 
> modern systems) is going to incur any noticeable latency in any case.

It would seem in this case, that if the X100Ps could stack on a IRQ,
then only 1 card needs generate interupts, and the rest of the cards
could get serviced at the same time.

Just a thought, I'll probably be told why I am wrong by someone with
knowledge of how this would fail.
-- 
Steven Critchfield  <critch at basesys.com>