Re: IPS Issues document

[Aman Singla <aman@cthulhu.engr.sgi.com>]

> I agree completely with that - protocol processing and interrupt time alone
> for a 1 Gbps connection can easily saturate a single CPU, even with interrupt
> coalescing and many other tricks.  When you move to a 10 Gbps connection, you
> can't just add more CPUs to deal with the problem, because of both cost and
> the fact that you don't get a perfect speedup as you add more CPUs.  This
> makes techniques that reduce CPU and bus utilization more valuable as network
> speeds increase.

And add to that the fact that indiscriminate interrupt coalescing
trades-off against latency, making a latency sensitive application
suffer in mixed traffic.

:a