#!/bin/sh

#
# Copyright (c) 2017 Dell EMC Isilon
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#

# Check if M_SELECT leaks: nselect > threads

m=`vmstat -m | grep -w select | awk '{print $2}'`
threads=`vmstat -z  | sed 's/,/ /g' | grep THREAD | awk '{print $4}'`
free=`vmstat -z  | sed 's/,/ /g' | grep THREAD | awk '{print $5}'`
[ $m -le $((threads + free)) ] && exit 0

echo FAIL
vmstat -m | sed -n '1p; /select/p'
vmstat -z | sed -n '1p;/THREAD/p'
exit 1