Re: Hfsc configuration problems

Wed, 22 Feb 2006 11:14:02 -0800 

Bill Marquette wrote:


On 2/22/06, Christopher McGee <[EMAIL PROTECTED]> wrote:

Jon Simola wrote:


On 2/22/06, Christopher McGee <[EMAIL PROTECTED]> 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
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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
I might be going about this the wrong way, but, this is ultimately what I'm trying to do. One queue has guaranteed 3Mb, another has a guaranteed 4Mb, another has 3Mb guarantee, which leaves about 90Mb as a pool for all of them. If they are backlogged, I want the first 2 queues to be able to utilize the entire 90Mb, and the 3rd queue should be able to utilize about 25Mb of it. This is a simplified example of what I sent earlier. But if I can do this, I can accomplish what I'm trying to and build off it later. 

Chris
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