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@cn.fujitsu.com>                                     ##
22## Restructure for LTP: Shi Weihua <shiwh@cn.fujitsu.com>                     ##
23## Added memcg enable/disable functinality: Rishikesh K Rajak                 ##
24##                                              <risrajak@linux.vnet.ibm.com  ##
25##                                                                            ##
26################################################################################
27
28cd $LTPROOT/testcases/bin
29export TCID="memcg_stress_test"
30export TST_TOTAL=2
31export TST_COUNT=0
32
33if [ "x$(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
38fi
39
40RUN_TIME=$(( 15 * 60 ))
41
42cleanup()
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
51do_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
66run_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
97testcase_1()
98{
99	run_stress 150 $(( ($mem-150) / 150 )) 5 $RUN_TIME
100
101	tst_resm TPASS "stress test 1 passed"
102}
103
104testcase_2()
105{
106	run_stress 1 $mem 5 $RUN_TIME
107
108	tst_resm TPASS "stress test 2 passed"
109}
110
111echo 3 > /proc/sys/vm/drop_caches
112sleep 2
113mem_free=`cat /proc/meminfo | grep MemFree | awk '{ print $2 }'`
114swap_free=`cat /proc/meminfo | grep SwapFree | awk '{ print $2 }'`
115
116mem=$(( $mem_free + $swap_free / 2 ))
117mem=$(( mem / 1024 ))
118
119date
120export TST_COUNT=$(( $TST_COUNT + 1 ))
121testcase_1
122export TST_COUNT=$(( $TST_COUNT + 1 ))
123testcase_2
124date
125
126exit 0
127