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Message-ID: <1ba2fa240807201034u1fbe3343tdcc858f7772d2b39@mail.gmail.com> Date: Sun, 20 Jul 2008 20:34:18 +0300 From: "Tomas Winkler" <tomasw@...il.com> To: "David Miller" <davem@...emloft.net> Cc: hadi@...erus.ca, kaber@...sh.net, netdev@...r.kernel.org, johannes@...solutions.net, linux-wireless@...r.kernel.org Subject: Re: [PATCH 20/31]: pkt_sched: Perform bulk of qdisc destruction in RCU. On Sun, Jul 20, 2008 at 8:25 PM, David Miller <davem@...emloft.net> wrote: > From: jamal <hadi@...erus.ca> > Date: Sun, 20 Jul 2008 11:16:03 -0400 > >> IMO, in the case of multiple hardware queues per physical wire, >> and such a netdevice already has a built-in hardware scheduler (they all >> seem to have this feature) then if we can feed the hardware queues >> directly, theres no need for any intermediate buffer(s). >> In such a case, to compare with qdisc arch, its like the root qdisc is >> in hardware. > > They tend to implement round-robin or some similar fairness algorithm > amongst the queues, with zero concern about packet priorities. > > It really is just like a bunch of queues to the phsyical layer, > fairly shared. > > These things are built for parallelization, not prioritization. Except wireless where HW has prioritizing scheduler per physical non-wire. Tomas -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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