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executable file 54 lines (46 sloc) 1.92 kb
#!/bin/bash
# collectd - contrib/exec-ksm.sh
# Copyright (C) 2011 Florian Forster
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
#
# Authors:
# Florian Forster <octo at collectd.org>
HOSTNAME="${COLLECTD_HOSTNAME:-$(hostname -f)}"
INTERVAL="${COLLECTD_INTERVAL:-60}"
function read_file() {
local type="$1"
local type_instance="$2"
local file_name="/sys/kernel/mm/ksm/$3"
local ident="$HOSTNAME/exec-ksm/vmpage_number-${type_instance}"
echo "PUTVAL \"$ident\" interval=$INTERVAL N:$(< $file_name)"
}
if [[ 0 -eq $(< /sys/kernel/mm/ksm/run) ]]; then
echo "$0: KSM not active." >&2
exit 1
fi
while sleep "$INTERVAL"
do
read_file vmpage_number shared pages_shared
read_file vmpage_number saved pages_sharing
read_file vmpage_number unshared pages_unshared
read_file vmpage_number volatile pages_volatile
read_file total_operations scan full_scans
done
exit 0
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