LARTC - Sep 2006 - HFSC parameter

My problem with HFSC tc command is ... 
tc command''s HFSC have a lot parameter with 4 curve type

SC curve -> umax dmax rate
LS curve -> umax dmax rate
RT curve -> umax dmax rate
UL curve -> umax dmax rate

so i''dont know which parameter are appropriate for my test case
such real time class which curve are appropriate and good working result.

my assumption about umax,dmax,rate ... this is true
first, HFSC will doing with "umax" rate but after delay exceed
"dmax" rate,
HFSC will change rate to "rate" ????

Can everybody tell me all 12 parameter ,what does it mean????

thank you

raku
 		
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Thossapron Apinyapanha napisał(a):
> Can everybody tell me all 12 parameter ,what does it mean????
Nobody knows:)

Is anybody here, who is using HFSC?

Thossapron Apinyapanha wrote:
> tc command''s HFSC have a lot parameter with 4 curve type
> 
> SC curve -> umax dmax rate
> LS curve -> umax dmax rate
> RT curve -> umax dmax rate
> UL curve -> umax dmax rate
> 
> so i''dont know which parameter are appropriate for my test case
> such real time class which curve are appropriate and good working result.
LS = link-share service curve, defines relation of service between
sibling classes. Can be used for intermediate and leaf classes.

UL = upper-limit service curve, limits LS curve.

RS = real-time service curve, defines absolute service guarantees
for leaf classes. Can be used, but does nothing for intermediate
classes.

SC = service curve, sets LS and RS to the same curve. Should usually
be used for leaf-classes instead of RS.
> my assumption about umax,dmax,rate ... this is true
> first, HFSC will doing with "umax" rate but after delay exceed
"dmax" rate,
> HFSC will change rate to "rate" ????
No, this is true for m1, d and m2 (use rate m1 for time d, then m2).
umax, dmax and rate are another way to specify the curve, m2 == rate
and m1 and d are calculated from umax and dmax.