vzcpucheck

#!/bin/bash
#  Copyright (C) 2000-2006 SWsoft. All rights reserved.
#
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software
#  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
VERBOSE=0
CPUINFO=/proc/cpuinfo
VEINFO=/proc/vz/veinfo
FRSHD=/proc/fairsched

function usage()
{
	echo "Usage: vzcpucheck [-v]"
	exit 2
}

if [ $# -eq 1 ]; then
	if [ $1 = "-v" ]; then
		VERBOSE=1
	else
		usage
	fi
elif [ $# -gt 1 ]; then 
	usage
fi

if [ ! -r $FRSHD ]; then
	echo "Can't read $FRSHD: Permission denied" 1>&2
	exit 1;
fi
if [ ! -r $CPUINFO ]; then
	echo "Can't read $CPUINFO: Permission denied" 1>&2
	exit 1;
fi

CPUUTL=`cat  ${CPUINFO} | awk '
{
        if ($1 == "bogomips" || $1 = "BogoMIPS") {
		sum += $3;
	}
}
END {
	print(sum * 25);
}'`

cat ${FRSHD} | awk -v totunits="$CPUUTL" -v verbose="$VERBOSE" '
BEGIN {
        sum = 0;
	fail = 0;
	weight=-1
	id=-1
	getline
	if ($1 == "Version:"){
		getline;
	}
	for (i = 0; i < NF; i++) {
		if ($i == "weight") {
			weight = i;
		}
		if ($i == "id") {
			id = i;
		}
	}
	if (weight == -1) {
		print("ERROR: Unknown format of '$FRSHD' column: weight not found");
		fail = 1
		exit
	}
	if (id == -1) {
		print("ERROR: Unknown format of '$FRSHD' column: id not found");
		fail = 1;
		exit
	}
	if (verbose) {
		print("vpsid\t\tunits");
		print("-----------------------");
	}
}
{
	if ($1 == 0 && $id != 0) {
		if ($weight){
			units = int(500000/$weight);
		} else {
			units = 500000;
		}
		if (verbose) {
			if ($id == 2147483647) {
				print("0\t\t" units);
			} else {
				print($id "\t\t" units);
			}
		}
		sum += units;
	}
}
END {
	if (fail)
		exit 1
	print("Current CPU utilization: " sum);
	print("Power of the node: " int(totunits));
	if (sum > totunits) {
		print("Warning: hardware node is overcommited");
	}
}'