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#!/bin/bash
##############################################################################
# Copyright (c) 2015 Ericsson AB and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
# Run a lmbench read memory latency benchmark in a host and
# outputs in json format the array sizes in megabytes and
# load latency over all points in that array in nanosecods
set -e
SIZE=$1
shift
STRIDE=$1
# write the result to stdout in json format
output_json()
{
iter=0
echo [
while read DATA
do
if [ $iter -gt 1 ] && [ -n "$DATA" ]; then
echo ,
fi
echo -n $DATA | awk '/ /{printf "{\"size\": %s, \"latency\": %s}", $1, $2}'
iter=$((iter+1))
done
echo ]
}
/usr/lib/lmbench/bin/x86_64-linux-gnu/lat_mem_rd $SIZE $STRIDE 2>&1 | output_json
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