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      1 #! /bin/sh
      2 
      3 ################################################################################
      4 ##                                                                            ##
      5 ## Copyright (c) 2009 FUJITSU LIMITED                                         ##
      6 ##                                                                            ##
      7 ## This program is free software;  you can redistribute it and#or modify      ##
      8 ## it under the terms of the GNU General Public License as published by       ##
      9 ## the Free Software Foundation; either version 2 of the License, or          ##
     10 ## (at your option) any later version.                                        ##
     11 ##                                                                            ##
     12 ## This program is distributed in the hope that it will be useful, but        ##
     13 ## WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY ##
     14 ## or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License   ##
     15 ## for more details.                                                          ##
     16 ##                                                                            ##
     17 ## You should have received a copy of the GNU General Public License          ##
     18 ## along with this program;  if not, write to the Free Software               ##
     19 ## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA    ##
     20 ##                                                                            ##
     21 ## Author: Li Zefan <lizf (at] cn.fujitsu.com>                                     ##
     22 ## Restructure for LTP: Shi Weihua <shiwh (at] cn.fujitsu.com>                     ##
     23 ## Added memcg enable/disable functinality: Rishikesh K Rajak                 ##
     24 ##                                              <risrajak (at] linux.vnet.ibm.com  ##
     25 ##                                                                            ##
     26 ################################################################################
     27 
     28 cd $LTPROOT/testcases/bin
     29 export TCID="memcg_stress_test"
     30 export TST_TOTAL=2
     31 export TST_COUNT=0
     32 
     33 if [ "x$(grep -w memory /proc/cgroups | cut -f4)" != "x1" ]; then
     34         echo "WARNING:";
     35         echo "Either Kernel does not support for memory resource controller or feature not enabled";
     36         echo "Skipping all memcgroup testcases....";
     37         exit 0
     38 fi
     39 
     40 RUN_TIME=$(( 15 * 60 ))
     41 
     42 cleanup()
     43 {
     44 	if [ -e /dev/memcg ]; then
     45 		umount /dev/memcg 2>/dev/null
     46 		rmdir /dev/memcg 2>/dev/null
     47 	fi
     48 }
     49 
     50 
     51 do_mount()
     52 {
     53 	cleanup;
     54 
     55 	mkdir /dev/memcg 2> /dev/null
     56 	mount -t cgroup -omemory memcg /dev/memcg
     57 }
     58 
     59 
     60 # Run the stress test
     61 #
     62 # $1 - Number of cgroups
     63 # $2 - Allocated how much memory in one process? in MB
     64 # $3 - The interval to touch memory in a process
     65 # $4 - How long does this test run ? in second
     66 run_stress()
     67 {
     68 	do_mount;
     69 
     70 	for i in $(seq 0 $(($1-1)))
     71 	do
     72 		mkdir /dev/memcg/$i 2> /dev/null
     73 		./memcg_process_stress $2 $3 &
     74 		eval pid$i=$!
     75 
     76 		eval echo \$pid$i > /dev/memcg/$i/tasks
     77 	done
     78 
     79 	for i in $(seq 0 $(($1-1)))
     80 	do
     81 		eval /bin/kill -s SIGUSR1 \$pid$i 2> /dev/null
     82 	done
     83 
     84 	sleep $4
     85 
     86 	for i in $(seq 0 $(($1-1)))
     87 	do
     88 		eval /bin/kill -s SIGKILL \$pid$i 2> /dev/null
     89 		eval wait \$pid$i
     90 
     91 		rmdir /dev/memcg/$i 2> /dev/null
     92 	done
     93 
     94 	cleanup;
     95 }
     96 
     97 testcase_1()
     98 {
     99 	run_stress 150 $(( ($mem-150) / 150 )) 5 $RUN_TIME
    100 
    101 	tst_resm TPASS "stress test 1 passed"
    102 }
    103 
    104 testcase_2()
    105 {
    106 	run_stress 1 $mem 5 $RUN_TIME
    107 
    108 	tst_resm TPASS "stress test 2 passed"
    109 }
    110 
    111 echo 3 > /proc/sys/vm/drop_caches
    112 sleep 2
    113 mem_free=`cat /proc/meminfo | grep MemFree | awk '{ print $2 }'`
    114 swap_free=`cat /proc/meminfo | grep SwapFree | awk '{ print $2 }'`
    115 
    116 mem=$(( $mem_free + $swap_free / 2 ))
    117 mem=$(( mem / 1024 ))
    118 
    119 date
    120 export TST_COUNT=$(( $TST_COUNT + 1 ))
    121 testcase_1
    122 export TST_COUNT=$(( $TST_COUNT + 1 ))
    123 testcase_2
    124 date
    125 
    126 exit 0
    127