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Result of the following command:
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Signed-Off-By: Pavel Šimerda <psimerda@redhat.com>
62 lines
2.1 KiB
Groff
62 lines
2.1 KiB
Groff
.TH HFSC 8 "31 October 2011" iproute2 Linux
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.
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.SH NAME
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HFSC \- Hierarchical Fair Service Curve's control under linux
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.
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.SH SYNOPSIS
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.nf
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tc qdisc add ... hfsc [ \fBdefault\fR CLASSID ]
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tc class add ... hfsc [ [ \fBrt\fR SC ] [ \fBls\fR SC ] | [ \fBsc\fR SC ] ] [ \fBul\fR SC ]
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\fBrt\fR : realtime service curve
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\fBls\fR : linkshare service curve
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\fBsc\fR : rt+ls service curve
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\fBul\fR : upperlimit service curve
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\(bu at least one of \fBrt\fR, \fBls\fR or \fBsc\fR must be specified
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\(bu \fBul\fR can only be specified with \fBls\fR or \fBsc\fR
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.
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.IP "SC := [ [ \fBm1\fR BPS ] \fBd\fR SEC ] \fBm2\fR BPS"
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\fBm1\fR : slope of the first segment
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\fBd\fR : x\-coordinate of intersection
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\fBm2\fR : slope of the second segment
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.PP
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.IP "SC := [ [ \fBumax\fR BYTE ] \fBdmax\fR SEC ] \fBrate\fR BPS"
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\fBumax\fR : maximum unit of work
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\fBdmax\fR : maximum delay
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\fBrate\fR : rate
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.PP
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.fi
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For description of BYTE, BPS and SEC \- please see \fBUNITS\fR
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section of \fBtc\fR(8).
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.
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.SH DESCRIPTION (qdisc)
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HFSC qdisc has only one optional parameter \- \fBdefault\fR. CLASSID specifies
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the minor part of the default classid, where packets not classified by other
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means (e.g. u32 filter, CLASSIFY target of iptables) will be enqueued. If
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\fBdefault\fR is not specified, unclassified packets will be dropped.
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.
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.SH DESCRIPTION (class)
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HFSC class is used to create a class hierarchy for HFSC scheduler. For
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explanation of the algorithm, and the meaning behind \fBrt\fR, \fBls\fR,
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\fBsc\fR and \fBul\fR service curves \- please refer to \fBtc\-hfsc\fR(7).
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As you can see in \fBSYNOPSIS\fR, service curve (SC) can be specified in two
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ways. Either as maximum delay for certain amount of work, or as a bandwidth
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assigned for certain amount of time. Obviously, \fBm1\fR is simply
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\fBumax\fR/\fBdmax\fR.
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Both \fBm2\fR and \fBrate\fR are mandatory. If you omit other
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parameters, you will specify linear service curve.
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.
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.SH "SEE ALSO"
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.
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\fBtc\fR(8), \fBtc\-hfsc\fR(7), \fBtc\-stab\fR(8)
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Please direct bugreports and patches to: <net...@vger.kernel.org>
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.
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.SH "AUTHOR"
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.
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Manpage created by Michal Soltys (sol...@ziu.info)
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