Date: Sun, 11 Apr 2010 00:55:11 -0600 From: "Peter" <fbsdq@peterk.org> To: "Z Wing" <zeddersuk@yahoo.co.uk> Cc: freebsd-pf@freebsd.org Subject: Re: (no subject) Message-ID: <7860e51d2b17e3643d8f6c4f1aa81ef6.squirrel@pop.pknet.net> In-Reply-To: <996868.85026.qm@web29002.mail.ird.yahoo.com> References: <996868.85026.qm@web29002.mail.ird.yahoo.com>
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> Hiya all,
>
> Could someone clarify for me the purpose of the
> bandwidth parameter when used with hfsc? Please consider my queue (512Kb
> max upload through the ADSL line):
>
> altq on em1 bandwidth 500Kb
> hfsc queue { ack, dns, ssh, other }
> queue ack bandwidth 95%
> priority 8 qlimit 500 hfsc (realtime 20%)
> queue dns
> bandwidth 95% priority 7 qlimit 500 hfsc (realtime 5%)
> queue
> ssh bandwidth 95% priority 6 qlimit 500 hfsc (realtime 20%)
> {ssh_login, ssh_bulk}
> queue ssh_login bandwidth 95% priority 6
> qlimit 500 hfsc
> queue ssh_bulk bandwidth 95% priority 5 qlimit
> 500 hfsc
> queue other bandwidth 95% priority 5 qlimit 500 hfsc
> (realtime 20% default)
>
> My understanding was that "bandwidth 20%" tells pf that the queue can only
> use 20% of the total parent queue
> bandwidth and the various guides on the Internet say that it cannot go
> above 100% which sort of makes sense. However what I want, for example,
> is the 'other' queue to get all the upload bandwidth as long as there is
> no acks or ssh traffic in the queue. If I set bandwidth 20% for other,
> won't that mean that no matter what, the 'other' queue will only get a
> maximum of 20% of the bandwidth (even if there is no ssh traffic
> waiting?)
As I remember and how I've got it setup:
[http://lists.freebsd.org/pipermail/freebsd-pf/2009-March/005061.html]
hfsc by default borrows from parent [up to 100% or 'upperlimit' you set] -
So if your other queues are not being used, it will borrow from parents
unless you have an upperlimit set.
That link has more info/explanation on how it worked for me.
]Peter[
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