[cgl_discussion] Prioritized protocol processing project announcement

Stephen Hemminger shemminger at osdl.org
Mon Nov 8 09:43:55 PST 2004


On Mon, 08 Nov 2004 16:36:47 +0900
Takashi Ikebe <ikebe.takashi at lab.ntt.co.jp> wrote:

> Linux Advanced Routing & Traffic Control works only on "sending" traffic 
> classification.

By default, it is only used for output, but there is optional support
for prioritizing and shaping incoming traffic with the same tools.

Read about ingress queue discipline

 http://lartc.org/howto/lartc.adv-qdisc.ingress.html

> Prioratus is works on "receiving" traffic classification.
> Linux kernel treat all receiving traffic as same priority, though the 
> latency of high priority packet arrival is critical for carrier grade 
> systems.
> 
> Stephen Hemminger wrote:
> > On Fri, 5 Nov 2004 11:09:54 -0800
> > Chris Wright <chrisw at osdl.org> wrote:
> > 
> > 
> >>* Takashi Ikebe (ikebe.takashi at lab.ntt.co.jp) wrote:
> >>
> >>>Hello, all.
> >>>NTT announces "prioratus" open source project.
> >>>The prioratus project provides "PRF.33.5 Prioritized protocol
> >>>processing"  GPL implementation.
> >>>First version of implementation is available on the web.
> >>>Prioratus provides high-priority protocol processing mechanism in
> >>>addition to ksoftirq, and makes high priority packets deriver low-latency.
> >>>
> >>>URL is below.
> >>>http://prioratus.sourceforge.net/
> >>
> >>Nice to see you've released this work.  Can you help me understand what
> >>is missing in current combinations of packet prioritzation and scheduler
> >>priorities?  I don't quite see the justification for this work yet.
> > 
> > 
> > Doesn't the existing traffic classification and ingress qdisc do the
> > similar thing but more flexibly. 
> > 	See http://lartc.org
> 
> 
> -- 
> Takashi Ikebe
> NTT Network Service Systems Laboratories
> 9-11, Midori-Cho 3-Chome Musashino-Shi,
> Tokyo 180-8585 Japan
> Tel : +81 422 59 4246, Fax : +81 422 60 4012
> e-mail : ikebe.takashi at lab.ntt.co.jp



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