Hi
I have same problem with cbq and start using hfsc. Now i use both of
them. My experience with cbq show me that parent queue must be large
than you want.If you Have 1Mb line declare it like 1.2Mb or 1.4Mb but
do not assign extra bandwidth you add.
--- Wes Santee <[EMAIL PROTECTED]> wrote:
> Wes Santee wrote:
> > [snip]
> > The setup from pf.conf is this:
> >
> > altq on $ext_if bandwidth 54Mb cbq queue { internal, external }
> > queue internal bandwidth 53104Kb priority 7 cbq(borrow)
> > queue external bandwidth 896Kb priority 4 cbq { highq, defaultq,
> lowq }
> > queue highq bandwidth 40% priority 3 cbq(borrow)
> > queue defaultq bandwidth 40% priority 2 cbq(default borrow)
> > queue lowq bandwidth 20% priority 1 qlimit 300 cbq(borrow)
> >
queue external bandwidth 1200Kb priority 4 cbq { highq, defaultq,
lowq }
queue highq bandwidth 360Kb priority 3 cbq(borrow)
queue defaultq bandwidth 360Kb priority 2 cbq(default borrow)
queue lowq bandwidth 180Kb priority 1 qlimit 300 cbq(borrow)
Try this
If someone have other ideas let us know.
> > The internal queue is for wireless traffic coming from and going to
> the
> > internal network. The external queue (and its children) are for
> traffic
> > going upstream to my ISP. The "external" queue is set to my max
> > upstream bandwidth to my ISP, so it can't borrow from the root
> queue.
> > All the child queue's under "external" can (and should) borrow
> against
> > the available upstream bandwidth amount if available.
> >
> > The problem is that packets in lowq are filling up the queue, even
> > though there is plenty of bandwidth available to borrow from the
> parent
> > queue.
>
> Here's some additional details that may help. Note in my original
> e-mail I said that the "external" queue cannot borrow from the root
> queue, as I can't transmit data any faster than 896Kbit/sec to my
> ISP.
>
> However, if I change the external queue to enable borrowing, ala:
>
> altq on $ext_if bandwidth 54Mb cbq queue { internal, external }
> queue internal bandwidth 53104Kb priority 7 cbq(borrow)
> queue external bandwidth 896Kb priority 4 cbq(borrow) { highq,
> defaultq,
> lowq }
> queue highq bandwidth 40% priority 3 cbq(borrow)
> queue defaultq bandwidth 40% priority 2 cbq(default borrow)
> queue lowq bandwidth 20% priority 1 cbq(borrow)
>
> things start painting a very different picture (note I eliminated the
> qlimit keyword also for testing purposes). "pfctl -vvsqueue" now
> gives us:
>
> queue internal bandwidth 53.10Mb priority 7 qlimit 200 cbq( borrow )
> [ pkts: 0 bytes: 0 dropped pkts: 0 bytes:
> 0 ]
> [ qlength: 0/200 borrows: 0 suspends: 0 ]
> [ measured: 0.0 packets/s, 0 b/s ]
> queue external bandwidth 896Kb priority 4 cbq( borrow ) {highq,
> defaultq, lowq}
> [ pkts: 0 bytes: 0 dropped pkts: 0 bytes:
> 0 ]
> [ qlength: 0/ 50 borrows: 1285 suspends: 0 ]
> [ measured: 0.0 packets/s, 0 b/s ]
> queue highq bandwidth 358.40Kb priority 3 cbq( borrow )
> [ pkts: 0 bytes: 0 dropped pkts: 0 bytes:
> 0 ]
> [ qlength: 0/ 50 borrows: 0 suspends: 0 ]
> [ measured: 0.0 packets/s, 0 b/s ]
> queue defaultq bandwidth 358.40Kb priority 2 cbq( borrow default )
> [ pkts: 2781 bytes: 1226812 dropped pkts: 0 bytes:
> 0 ]
> [ qlength: 0/ 50 borrows: 180 suspends: 0 ]
> [ measured: 17.5 packets/s, 66.61Kb/s ]
> queue lowq bandwidth 179.20Kb cbq( borrow )
> [ pkts: 5189 bytes: 6068440 dropped pkts: 0 bytes:
> 0 ]
> [ qlength: 0/ 50 borrows: 4341 suspends: 0 ]
> [ measured: 40.9 packets/s, 398.70Kb/s ]
>
> Now the queue "lowq" is borrowing heavily from its parent queue
> (external) and the queue is not backing up even at the default of 50
> elements.
>
> The strange thing here is that the queue "external" now shows that it
> is
> borrowing from its parent (the root queue), although the amount of
> bandwidth going through its queue is never getting close to its max
> of
> 896Kbit (about the highest I've seen it go is ~700Kbit/sec).
>
> Can anyone explain what is going on? Why won't child queues enabled
> for
> borrowing not fully borrow from their parent if the parent is
> configured
> not to borrow from its parent?
>
> Cheers,
> -Wes
>
>
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