Hfsc configuration problems

[Bill Marquette]

On 2/22/06, Christopher McGee <chris at xecu.net> wrote:
> Jon Simola wrote:
>
> >On 2/22/06, Christopher McGee <chris at xecu.net> wrote:
> >
> >
> >>I've been trying to get hfsc working properly, but I'm obviously doing
> >>something wrong because I keep getting errors like this:
> >>
> >>pfctl: link-sharing sc exceeds parent's sc
> >>
> >>
> >
> >Yeah, the percentages in link-sharing are calculated against the
> >physical interface, but bandwidth is against the parent queue
> >(usually).
> >
> >Here's my working sample, which does not make any great sense either.
> >I had just started playing with upperlimit, which should be settable
> >on multiple queues.
> >
> ># backbone queueing
> >altq on em0 hfsc bandwidth 100Mb queue { q_em0_high, q_em0_high_bulk,
> >q_em0_med, q_em0_med_bulk, q_em0_low, q_em0_low_bulk }
> >queue q_em0_high bandwidth 10% hfsc(linkshare 1%) priority 7
> >queue q_em0_high_bulk bandwidth 40% hfsc(linkshare 4%) priority 6
> >queue q_em0_med bandwidth 10% hfsc(linkshare 1%) priority 5
> >queue q_em0_med_bulk bandwidth 20% hfsc(linkshare 2%) priority 4
> >queue q_em0_low bandwidth 10% hfsc(linkshare 1%) priority 1
> >queue q_em0_low_bulk bandwidth 10% hfsc(linkshare 1% default) priority 0
> >
> ># vlan trunk queueing
> >altq on em1 hfsc(ecn upperlimit 500Mb) queue { q_cust, q_dmz }
> >queue q_cust hfsc(ecn realtime 2Mb upperlimit 40Mb ) \
> >  { q_cust_h, q_cust_hb, q_cust_m, q_cust_mb, q_cust_l, q_cust_lb }
> >queue   q_cust_h bandwidth 10% hfsc(linkshare 1%) priority 5
> >queue   q_cust_hb bandwidth 40% hfsc(linkshare 4%) priority 4
> >queue   q_cust_m bandwidth 10% hfsc(linkshare 1%) priority 4
> >queue   q_cust_mb bandwidth 20% hfsc(linkshare 2%) priority 2
> >queue   q_cust_l bandwidth 10% hfsc(linkshare 1%) priority 1
> >queue   q_cust_lb bandwidth 5% hfsc(linkshare 1% default) priority 0
> >queue q_dmz hfsc(ecn realtime 50Mb upperlimit 90Mb) \
> >  { q_dmz_h, q_dmz_hb, q_dmz_l, q_dmz_lb }
> >queue   q_dmz_h bandwidth 10% hfsc(linkshare 5%) priority 7
> >queue   q_dmz_hb bandwidth 40% hfsc(linkshare 10%) priority 4
> >queue   q_dmz_l bandwidth 10% hfsc(linkshare 2%) priority 3
> >queue   q_dmz_lb bandwidth 20% hfsc(linkshare 5% ) priority 0
> >
> >
> >
> >
> >>Here's my current configuration:
> >>
> >>altq on $ext_if bandwidth 100Mb hfsc queue { queue1, queue2, queue3 }
> >>queue queue1 bandwidth 500Kb priority 7 hfsc(realtime 128Kb red)
> >>queue queue2 { queue2_1, queue2_2, queue2_3, queue2_4, queue2_5 }
> >>  queue queue2_1 priority 5 hfsc(realtime 3Mb linkshare 100% default red)
> >>  queue queue2_2 bandwidth 1.5Mb priority 3 hfsc(red)
> >>  queue queue2_3 bandwidth 1Mb hfsc(red)
> >>  queue queue2_4 bandwidth 4Mb hfsc(red)
> >>  queue queue2_5 priority 3 hfsc(linkshare 100% red)
> >>queue queue3 { queue3_1, queue3_2 }
> >>  queue queue3_1 hfsc(linkshare 100% red)
> >>  queue queue3_2 hfsc(linkshare 100% red)
> >>
> >>I've given some minimum bandwidth to queues. I want queue2_1, 2_5, 3_1,
> >>3_2 to be able to utilize all of the spare bandwidth when they need it.
> >>I've read over the man pages, however, documentation on hfsc seems
> >>fairly limited.
> >>
> >>Chris
> >>_______________________________________________
> >>freebsd-pf at freebsd.org mailing list
> >>http://lists.freebsd.org/mailman/listinfo/freebsd-pf
> >>To unsubscribe, send any mail to "freebsd-pf-unsubscribe at freebsd.org"
> >>
> >>
> >>
> I can move the queues to 1 level.  I've even tried.  It seems the
> problem has something to do with allowing multiple queues to have 90 or
> 100% linkshare.  This is where I'm stuck because I'm just not sure how
> to make multiple queues all share the same pool without doing it that way.

Yeah, the link share percentages need to add up to less than 100%. 
Upperlimit is what you want to set, I've never managed to get
linkshare to do anything (apparently) useful.

--Bill