Re: Network Stack Locking

From: Luigi Rizzo (rizzo_at_icir.org)
Date: 05/25/04

  • Next message: Robert Watson: "Re: Network Stack Locking" 
    Date: Tue, 25 May 2004 11:32:08 -0700
To: Matthew Dillon <dillon@apollo.backplane.com>

    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
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