Linux Load Average Percentage (suitable as HAProxy Agent Check)

README.rst

Manual

ABOUT

   loadavgpct - Linux Load Average Percentage
   loadavgpct - Linux Load Average Percentage Capacity

SYNOPSIS

   loadavgpct[cap] [LOADAVG_FIELD_1] [LOADAVG_FIELD_2] [COEFFICIENT]

EXAMPLE

   $ loadavgpctcap 1 2 1
   $ loadavgpct - - 10

loadavgpct

#! /bin/sh

# loadavgpct - Linux Load Average Percentage
# Copyright (C) 2015 Matous Jan Fialka, <http://mjf.cz/>
# Released under the terms of "The MIT License"

export LC_ALL=C
export LANG=C

awk -v A=$1 -v B=$2 -v C=$3 '

	BEGIN {
		A = ((A + 0) == 0) ? 1 : A
		B = ((B + 0) == 0) ? 2 : B
		C = ((C + 0) == 0) ? 0 : C
		N = 0
	}

	(ARGIND == 1) && ($1 == "processor") {
		N++	
	}

	(ARGIND == 2) {
		A = $A
		B = $B
	}

	END {
		printf "%d%%\n", (100*(A + B*C))/(A + C*(B + N) + N)
	}

' /proc/cpuinfo /proc/loadavg

# vi:ft=sh

loadavgpctcap

#! /bin/sh

# loadavgpctcap - Linux Load Average Percentage Capacity
# Copyright (C) 2015 Matous Jan Fialka, <http://mjf.cz/>
# Released under the terms of "The MIT License"

export LC_ALL=C
export LANG=C

awk -v A=$1 -v B=$2 -v C=$3 '

	BEGIN {
		A = ((A + 0) == 0) ? 1 : A
		B = ((B + 0) == 0) ? 2 : B
		C = ((C + 0) == 0) ? 0 : C
		N = 0
	}

	(ARGIND == 1) && ($1 == "processor") {
		N++	
	}

	(ARGIND == 2) {
		A = $A
		B = $B
	}

	END {
		printf "%d%%\n", (100*(C + 1)*N)/(A + C*(B + N) + N)
	}

' /proc/cpuinfo /proc/loadavg

# vi:ft=sh

xinetd-loadavgpct

service loadavgpct
{
	disable		= no
	type		= UNLISTED
	protocol	= tcp
	port		= 5623
	user		= root
	wait		= no
	# server	= /usr/local/sbin/loadavgpct
	server		= /usr/local/sbin/loadavgpctcap
	log_on_success	=
}