bin/141340: wrong netstat -w 1 output
Dmitry S. Luhtionov
mitya at cabletv.dp.ua
Thu Dec 10 11:50:04 UTC 2009
>Number: 141340
>Category: bin
>Synopsis: wrong netstat -w 1 output
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Dec 10 11:50:03 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator: Dmitry S. Luhtionov
>Release: 8.0-RELEASE
>Organization:
>Environment:
vpn8# uname -a
FreeBSD vpn8.cabletv.dp.ua 8.0-STABLE FreeBSD 8.0-STABLE #0: Wed Dec 2 10:18:16 EET 2009 mitya at vpn8.cabletv.dp.ua:/usr/src/sys/amd64/compile/vpn8 amd64
vpn8#
>Description:
On high load netstat may incorrect output
This server running mpd-5.3 as pptp server
vpn8# ifconfig -lu | wc -w
1734
vpn8# netstat -w 1 -d -h
input (Total) output
packets errs bytes packets errs bytes colls drops
173K 0 89M 183K 0 129M 0 0
170K 0 89M 181K 0 129M 0 0
170K 0 89M 180K 0 128M 0 0
170K 0 89M 180K 0 127M 0 0
175K 0 91M 184K 0 130M 0 0
173K 0 90M 183K 0 129M 0 0
173K 0 90M 182K 0 129M 0 0
171K 0 89M 180K 0 127M 0 0
171K 0 89M 181K 0 129M 0 0
172K 0 89M 181K 0 128M 0 0
143K 0 88M 156K 0 107M 0 0
174K 0 91M 184K 0 131M 0 0
173K 0 90M 183K 0 130M 0 0
175K 0 91M 186K 0 131M 0 0
177K 0 92M 188K 0 133M 0 0
0 71M 0 0 0
171K 0 89M 179K 0 127M 0 0
171K 0 89M 181K 0 128M 0 0
175K 0 91M 186K 0 131M 0 0
70K 0 83M 52K 0 -20M 0 0
input (Total) output
packets errs bytes packets errs bytes colls drops
174K 0 92M 184K 0 132M 0 0
175K 0 93M 184K 0 132M 0 0
174K 0 92M 184K 0 132M 0 0
135K 0 89M 145K 0 118M 0 0
172K 0 90M 181K 0 129M 0 0
171K 0 89M 182K 0 129M 0 0
172K 0 90M 183K 0 130M 0 0
171K 0 90M 182K 0 130M 0 0
173K 0 91M 183K 0 130M 0 0
^C
vpn8# netstat -w 1
input (Total) output
packets errs bytes packets errs bytes colls
145159 0 82485349 153321 0 117743533 0
136895 0 79084654 145018 0 111877348 0
146279 0 81710082 153952 0 116857455 0
143634 0 80602950 152005 0 116127801 0
144205 0 81175701 151892 0 115836499 0
146342 0 83031415 153968 0 118093209 0
143365 0 80564430 151508 0 115702643 0
145253 0 82320881 153062 0 116675147 0
146909 0 81998714 155485 0 117155601 0
91507 0 76590439 79098 0 35481375 0
145148 0 81429871 153728 0 116617071 0
142632 0 80932248 150865 0 115942720 0
21918 0 74115278 18446744073709486002 0 18446744073585465790 0
142905 0 81095335 150861 0 115144168 0
142216 0 80410366 150408 0 114744557 0
142302 0 81065884 150364 0 115161521 0
141493 0 79316895 148997 0 112673424 0
^C
>How-To-Repeat:
run netstat -w 1 again
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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