ALTQ/pf troubles
Alexander S. Usov
A.S.Usov at KVI.nl
Fri Oct 1 06:55:20 PDT 2004
On Friday 01 October 2004 15:28, Brian Fundakowski Feldman wrote:
> On Mon, Sep 27, 2004 at 10:40:00PM +0200, Alexander S. Usov wrote:
> > Hello !!
> > Just enabling the queueing on the interface with bandwidth == DSL
> > bandwidth results in the appox. factor of 2 drop in the speed of the
> > outgoing transfers.
> >
> > >From my experiments I got an impression that to make this slow-down
> >
> > away I have to specify the bandwith around 700Kb, which is twice bigger
> > than real.
>
> Are you telling ALTQ to process _incoming_ packets?
According to the pf manuals it should process only outgoing packets.
And I believe it's the case as the incoming rate doesn't depends on queieing
state.
Just did an experiment adding only this 2 lines:
===
altq on $ext priq bandwidth 350Kb queue {q}
queue q priority 1 priq(default)
===
and no queue statements in the filtering rules.
If I understand the logick of the pf right, it means to create an outbound
queue on $ext with bandwith 350Kb and put all outgoing traffic into it (due to
the (default) statement).
This results in the outgoing transfer speed of appox. 18KB/s, and incoming is
unaffected and is approx. 117KB/s.
Increasing bandwith in the altq rule to 700Kb, results in the upload speed of
approx. 30-34 KB/s.
Is it a good idea to check the behavior of the ruleset with OpenBSD?
--
Best regards,
Alexander.
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