Network Stack Locking

[Luigi Rizzo]

On Tue, May 25, 2004 at 11:20:49AM -0700, Matthew Dillon wrote:
...
> :Actually, this was the specific point I was making also :-).  The question
> :I was asking was about the depth of the message queues between protocol
> :stack layers in actual measurements -- are you observing substantial
> :coallescing between layers as a result of the queues at this point?  I'm
...
>     It should also be noted that since today's processors are so damn fast,
>     actually maxing out the cpu before maxing out the PCI bus(es), at least
>     on a standard workstation, is difficult.

that's where the soekris comes handy :)
(yes i understand that much of the issues here are related to SMP,
but there lot of evidence that a non-smp 5.x kernel is significantly
slower than the equivalent 4.x code, even on heavy network i/o
loads, so there is certainly something to clean up there too).

cheers
luigi