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Diffstat (limited to 'man/man8/tc-hfsc.8')
| -rw-r--r-- | man/man8/tc-hfsc.8 | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/man/man8/tc-hfsc.8 b/man/man8/tc-hfsc.8 new file mode 100644 index 0000000..fd0df8f --- /dev/null +++ b/man/man8/tc-hfsc.8 @@ -0,0 +1,61 @@ +.TH HFSC 8 "31 October 2011" iproute2 Linux +. +.SH NAME +HFSC \- Hierarchical Fair Service Curve's control under linux +. +.SH SYNOPSIS +.nf +tc qdisc add ... hfsc [ \fBdefault\fR CLASSID ] + +tc class add ... hfsc [ [ \fBrt\fR SC ] [ \fBls\fR SC ] | [ \fBsc\fR SC ] ] [ \fBul\fR SC ] + +\fBrt\fR : realtime service curve +\fBls\fR : linkshare service curve +\fBsc\fR : rt+ls service curve +\fBul\fR : upperlimit service curve + +\(bu at least one of \fBrt\fR, \fBls\fR or \fBsc\fR must be specified +\(bu \fBul\fR can only be specified with \fBls\fR or \fBsc\fR +. +.IP "SC := [ [ \fBm1\fR BPS ] \fBd\fR SEC ] \fBm2\fR BPS" +\fBm1\fR : slope of the first segment +\fBd\fR : x\-coordinate of intersection +\fBm2\fR : slope of the second segment +.PP +.IP "SC := [ [ \fBumax\fR BYTE ] \fBdmax\fR SEC ] \fBrate\fR BPS" +\fBumax\fR : maximum unit of work +\fBdmax\fR : maximum delay +\fBrate\fR : rate +.PP +.fi +For description of BYTE, BPS and SEC \- please see \fBUNITS\fR +section of \fBtc\fR(8). +. +.SH DESCRIPTION (qdisc) +HFSC qdisc has only one optional parameter \- \fBdefault\fR. 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 +\fBdefault\fR is not specified, unclassified packets will be dropped. +. +.SH DESCRIPTION (class) +HFSC class is used to create a class hierarchy for HFSC scheduler. For +explanation of the algorithm, and the meaning behind \fBrt\fR, \fBls\fR, +\fBsc\fR and \fBul\fR service curves \- please refer to \fBtc\-hfsc\fR(7). + +As you can see in \fBSYNOPSIS\fR, 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, \fBm1\fR is simply +\fBumax\fR/\fBdmax\fR. + +Both \fBm2\fR and \fBrate\fR are mandatory. If you omit other +parameters, you will specify linear service curve. +. +.SH "SEE ALSO" +. +\fBtc\fR(8), \fBtc\-hfsc\fR(7), \fBtc\-stab\fR(8) + +Please direct bugreports and patches to: <netdev@vger.kernel.org> +. +.SH "AUTHOR" +. +Manpage created by Michal Soltys (soltys@ziu.info) |