1 #! /bin/sh 2 3 ############################################################################### 4 # # 5 # Copyright (c) 2010 FUJITSU LIMITED # 6 # # 7 # This program is free software; you can redistribute it and/or modify it # 8 # under the terms of the GNU General Public License as published by the Free # 9 # Software Foundation; either version 2 of the License, or (at your option) # 10 # any later version. # 11 # # 12 # Author: Li Zefan <lizf (at] cn.fujitsu.com> # 13 # # 14 ############################################################################### 15 16 LOOP=200 17 18 # Use up to 10% of free memory 19 free_mem=`cat /proc/meminfo | grep '^MemFree' | awk '{ print $2 }'` 20 cpus=`tst_ncpus` 21 22 step=$(( $free_mem / 10 / $LOOP / $cpus )) 23 24 if [ $step -eq 0 ]; then 25 step=1 26 LOOP=50 27 fi 28 29 while true; do 30 new_size=1 31 i=0 32 while [ $i -lt $LOOP ]; do 33 echo $new_size > "$TRACING_PATH"/buffer_size_kb 34 new_size=$(( $new_size + $step )) 35 i=$((i + 1)) 36 done 37 38 i=0 39 while [ $i -lt $LOOP ]; do 40 new_size=$(( $new_size - $step )) 41 echo $new_size > "$TRACING_PATH"/buffer_size_kb 42 i=$((i + 1)) 43 done 44 sleep 1 45 done 46
