2012-03-27 22:41:26 +02:00
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#!/bin/sh
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# tcp_retries revision 2 (Feb 2012)
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#
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# TCP retransmission rate. Useful for network debugging.
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#
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# Required privileges: none
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#
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# OS: Linux with procfs
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#
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# Author: Artem Sheremet <dot.doom@gmail.com>
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#
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#%# family=auto
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#%# capabilities=autoconf
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TCPSTAT=/proc/net/tcp
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2011-10-23 00:01:39 +02:00
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case $1 in
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2012-03-27 22:41:26 +02:00
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autoconf)
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[ -r $TCPSTAT -o -r ${TCPSTAT}6 ] && echo "yes" || echo "no"
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;;
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2011-10-23 00:01:39 +02:00
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config)
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2012-03-27 22:41:26 +02:00
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cat <<CONFIG
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2011-10-23 00:01:39 +02:00
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graph_title TCP retransmissions
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graph_vlabel Rate, retrs/sockets
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graph_category network
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2012-03-27 22:41:26 +02:00
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graph_info TCP sockets retransmission counters from $TCPSTAT
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2011-10-23 00:01:39 +02:00
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rate.label Retransmission rate
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rate.draw LINE2
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2012-03-27 22:41:26 +02:00
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rate.min 0
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CONFIG
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;;
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2011-10-23 00:01:39 +02:00
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esac
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cat /proc/net/tcp* | awk '
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{
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TOTAL += $7;
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COUNT++;
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}
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END {
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printf "rate.value %.3f\n", TOTAL/COUNT
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}
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'
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