-.\" @(#) $Id: pppstats.8,v 1.1 1995/04/28 06:22:53 paulus Exp $
-.TH PPPSTATS 8 "23 Aug 1994"
+.\" @(#) $Id: pppstats.8,v 1.2 1995/05/02 05:50:53 paulus Exp $
+.TH PPPSTATS 8 "2 May 1995"
.SH NAME
pppstats \- print PPP statistics
.SH SYNOPSIS
[
.B -v
] [
+.B -r
+] [
+.B -c
+] [
.B -i
.I <secs>
] [
.I <unit#>
]
.ti 12
-.br
-[
-.I objectfile
-[
-.I corefile
-]]
.SH DESCRIPTION
.B pppstats
prints PPP-related statistics.
.B -v
flag causes
.B pppstats
-to display additional statistics, such as the number of packets tossed.
+to display additional statistics, such as the number of packets tossed
+(that is, which the VJ TCP header decompression code rejected).
+.PP
+The
+.B -r
+flag causes
+.B pppstats
+to display the overall packet compression rate. The rate value is
+between 0 and 1, with 0 meaning that the data is incompressible.
+.PP
+The
+.B -c
+flag is used to specify an alternate display mode that shows
+packet compression statistics: the number of packets and bytes
+uncompressed (that is, before compression or after decompression),
+compressed, and incompressible (packets which did not shrink on
+compression and were transmitted uncompressed), and the recent
+compression rate. This rate reflects the recent performance of the
+compression code rather than the overall rate achieved since
+compression was enabled.
.PP
The
.B -i
flag is used to specify the interval between printouts. The default is
5 seconds.
.PP
-.B pppstats
-must be installed set-group-id to kmem, or the user must have read
-access to /dev/kmem.
+<unit#> specifies which interface to use for gathering statistics.