1PPPSTATS(8) System Manager's Manual PPPSTATS(8)
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6 pppstats - print PPP statistics
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9 pppstats [ -a ] [ -d ] [ -v ] [ -r ] [ -z ] [ -c <count> ] [ -w <secs>
10 ] [ interface ]
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13 The pppstats utility reports PPP-related statistics at regular inter‐
14 vals for the specified PPP interface. If the interface is unspecified,
15 it will default to ppp0. The display is split horizontally into input
16 and output sections containing columns of statistics describing the
17 properties and volume of packets received and transmitted by the inter‐
18 face.
19 The options are as follows:
21 -a Display absolute values rather than deltas. With this option,
23 all reports show statistics for the time since the link was ini‐
24 tiated. Without this option, the second and subsequent reports
25 show statistics for the time since the last report.
26 -d Show data rate (kB/s) instead of bytes.
28 -c count
30 Repeat the display count times. If this option is not speci‐
31 fied, the default repeat count is 1 if the -w option is not
32 specified, otherwise infinity.
33 -r Display additional statistics summarizing the compression ratio
35 achieved by the packet compression algorithm in use.
36 -v Display additional statistics relating to the performance of the
38 Van Jacobson TCP header compression algorithm.
39 -w wait
41 Pause wait seconds between each display. If this option is not
42 specified, the default interval is 5 seconds.
43 -z Instead of the standard display, show statistics indicating the
45 performance of the packet compression algorithm in use.
46 The following fields are printed on the input side when the -z option
48 is not used:
49 IN The total number of bytes received by this interface.
51 PACK The total number of packets received by this interface.
53 VJCOMP The number of header-compressed TCP packets received by this
55 interface.
56 VJUNC The number of header-uncompressed TCP packets received by this
58 interface. Not reported when the -r option is specified.
59 VJERR The number of corrupted or bogus header-compressed TCP packets
61 received by this interface. Not reported when the -r option is
62 specified.
63 VJTOSS The number of VJ header-compressed TCP packets dropped on recep‐
65 tion by this interface because of preceding errors. Only
66 reported when the -v option is specified.
67 NON-VJ The total number of non-TCP packets received by this interface.
69 Only reported when the -v option is specified.
70 RATIO The compression ratio achieved for received packets by the
72 packet compression scheme in use, defined as the uncompressed
73 size divided by the compressed size. Only reported when the -r
74 option is specified.
75 UBYTE The total number of bytes received, after decompression of com‐
77 pressed packets. Only reported when the -r option is specified.
78 The following fields are printed on the output side:
80 OUT The total number of bytes transmitted from this interface.
82 PACK The total number of packets transmitted from this interface.
84 VJCOMP The number of TCP packets transmitted from this interface with
86 VJ-compressed TCP headers.
87 VJUNC The number of TCP packets transmitted from this interface with
89 VJ-uncompressed TCP headers. Not reported when the -r option is
90 specified.
91 NON-VJ The total number of non-TCP packets transmitted from this inter‐
93 face. Not reported when the -r option is specified.
94 VJSRCH The number of searches for the cached header entry for a VJ
96 header compressed TCP packet. Only reported when the -v option
97 is specified.
98 VJMISS The number of failed searches for the cached header entry for a
100 VJ header compressed TCP packet. Only reported when the -v
101 option is specified.
102 RATIO The compression ratio achieved for transmitted packets by the
104 packet compression scheme in use, defined as the size before
105 compression divided by the compressed size. Only reported when
106 the -r option is specified.
107 UBYTE The total number of bytes to be transmitted, before packet com‐
109 pression is applied. Only reported when the -r option is speci‐
110 fied.
111 When the -z option is specified, pppstats instead displays the follow‐
113 ing fields, relating to the packet compression algorithm currently in
114 use. If packet compression is not in use, these fields will all dis‐
115 play zeroes. The fields displayed on the input side are:
116 COMPRESSED BYTE
118 The number of bytes of compressed packets received.
119 COMPRESSED PACK
121 The number of compressed packets received.
122 INCOMPRESSIBLE BYTE
124 The number of bytes of incompressible packets (that is, those
125 which were transmitted in uncompressed form) received.
126 INCOMPRESSIBLE PACK
128 The number of incompressible packets received.
129 COMP RATIO
131 The recent compression ratio for incoming packets, defined as
132 the uncompressed size divided by the compressed size (including
133 both compressible and incompressible packets).
134 The fields displayed on the output side are:
136 COMPRESSED BYTE
138 The number of bytes of compressed packets transmitted.
139 COMPRESSED PACK
141 The number of compressed packets transmitted.
142 INCOMPRESSIBLE BYTE
144 The number of bytes of incompressible packets transmitted (that
145 is, those which were transmitted in uncompressed form).
146 INCOMPRESSIBLE PACK
148 The number of incompressible packets transmitted.
149 COMP RATIO
151 The recent compression ratio for outgoing packets.
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154 pppd(8)
155 26 June 1995 PPPSTATS(8)