(no subject)

[Z Wing]

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 
xx%" tells pf that the queue can only use xx% 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?)

I think I haven't quite understood this properly but 
perhaps someone could clarify it. I found a lot out from calomel.org's 
excellent page but that's the only bit that confused me.

Thanks
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(no subject)

[Z Wing]

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?)
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hsfc & pf

[Z Wing]

hi Peter,

That link seems to 404, could you recheck it? If hsfc borrows 100% and you 
control it with upperlimit, what s the point of the bandwidth parameter for 
anything other than the first altq line specifying your total bw?
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Re: hsfc & pf

[Z Wing]

Oh I see, so you set that initally but each queue will definitely borrow from 
the parent queue (up to upperlimit)? with cbq you have to specify "borrow" 
don't you, but is my understanding right that borrow is implied with hfsc?

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