[asterisk-users] Re: Dell PowerEdge 2950 Sharing NIC IRQ with Digium Card

[Benny Amorsen]

>>>>> "M" == Matt  <mhoppes at gmail.com> writes:

M> I guess the question is... is it even possible to have a real-time
M> VoIP card running on PCIe? Or with 1,000 Interrupts a second.. does
M> it simply need to have its own IRQ?

I don't know why you are so fixated on PCIe. PCIe can do shared
interrupts, non-shared interrupts, or even MSI. Just like regular PCI.

1000 interrupts a second is about the same as idle. At 1000 interrupts
a second, the CPU gets perhaps 2 million clock cycles between each
interrupt. Once you reach hundreds of thousands of interrupts a
second, you can have a problem. Before that, you only have problems if
the software is crap.


/Benny