02-28-2012
Quote:
Originally Posted by
digitalrg
Hi Corona,
Still no go......
Did you get the same value out of it that you put into it?
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LEARN ABOUT SUNOS
tc-hfsc
HFSC(8) Linux HFSC(8)
NAME
HFSC - Hierarchical Fair Service Curve's control under linux
SYNOPSIS
tc qdisc add ... hfsc [ default CLASSID ]
tc class add ... hfsc [ [ rt SC ] [ ls SC ] | [ sc SC ] ] [ ul SC ]
rt : realtime service curve
ls : linkshare service curve
sc : rt+ls service curve
ul : upperlimit service curve
o at least one of rt, ls or sc must be specified
o ul can only be specified with ls or sc
SC := [ [ m1 BPS ] d SEC ] m2 BPS
m1 : slope of the first segment
d : x-coordinate of intersection
m2 : slope of the second segment
SC := [ [ umax BYTE ] dmax SEC ] rate BPS
umax : maximum unit of work
dmax : maximum delay
rate : rate
For description of BYTE, BPS and SEC - please see UNITS section of tc(8).
DESCRIPTION (qdisc)
HFSC qdisc has only one optional parameter - default. CLASSID specifies the minor part of the default classid, where packets not classified
by other means (e.g. u32 filter, CLASSIFY target of iptables) will be enqueued. If default is not specified, unclassified packets will be
dropped.
DESCRIPTION (class)
HFSC class is used to create a class hierarchy for HFSC scheduler. For explanation of the algorithm, and the meaning behind rt, ls, sc and
ul service curves - please refer to tc-hfsc(7).
As you can see in SYNOPSIS, service curve (SC) can be specified in two ways. Either as maximum delay for certain amount of work, or as a
bandwidth assigned for certain amount of time. Obviously, m1 is simply umax/dmax.
Both m2 and rate are mandatory. If you omit other parameters, you will specify linear service curve.
SEE ALSO
tc(8), tc-hfsc(7), tc-stab(8)
Please direct bugreports and patches to: <netdev@vger.kernel.org>
AUTHOR
Manpage created by Michal Soltys (soltys@ziu.info)
iproute2 31 October 2011 HFSC(8)