#!/bin/bash #/* # * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more # * contributor license agreements. See the NOTICE file distributed with # * this work for additional information regarding copyright ownership. # * The OpenAirInterface Software Alliance licenses this file to You under # * the OAI Public License, Version 1.0 (the "License"); you may not use this file # * except in compliance with the License. # * You may obtain a copy of the License at # * # * http://www.openairinterface.org/?page_id=698 # * # * Unless required by applicable law or agreed to in writing, software # * distributed under the License is distributed on an "AS IS" BASIS, # * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # * See the License for the specific language governing permissions and # * limitations under the License. # *------------------------------------------------------------------------------- # * For more information about the OpenAirInterface (OAI) Software Alliance: # * contact@openairinterface.org # */ # \author Navid Nikaein, Rohit Gupta # To free unused memory else test setup runs out of memory mem_threshold=0.2 #If free memory is less than this threshold, then VM drop cache is called mem_tot=`vmstat -s -S k |grep "total memory" | awk '{print $1}'` mem_free=`vmstat -s -S k |grep "free memory" | awk '{print $1}'` mem_frac=`bc <<< "scale=4;$mem_free/$mem_tot"` echo $mem_frac #mem_frac=`bc <<< "scale=4;`echo $mem_free`/`echo $mem_tot`"` echo "Total Memory = $mem_tot k " echo "Free Memory = $mem_free k" echo "Fraction free memory = $mem_frac " res=`bc <<< "$mem_frac < 0.2" ` echo "Comparison Result = $res" if [ "$res" == "1" ] then echo "Free memory less than threshold = $mem_threshold" sudo -E bash -c 'echo 3 > /proc/sys/vm/drop_caches ' fi