Menu
▾
▴
[LTP] [PATCH v4 1/8] A library used to test memcg
|
From: Peng H. <pe...@cn...> - 2012-01-26 05:58:34
|
This library includes a set of functions used to test memcg.
Signed-off-by: Peng Haitao <pe...@cn...>
---
.../controllers/memcg/functional/memcg_lib.sh | 410 ++++++++++++++++++++
1 files changed, 410 insertions(+), 0 deletions(-)
create mode 100755 testcases/kernel/controllers/memcg/functional/memcg_lib.sh
diff --git a/testcases/kernel/controllers/memcg/functional/memcg_lib.sh b/testcases/kernel/controllers/memcg/functional/memcg_lib.sh
new file mode 100755
index 0000000..f528c75
--- /dev/null
+++ b/testcases/kernel/controllers/memcg/functional/memcg_lib.sh
@@ -0,0 +1,410 @@
+#! /bin/sh
+
+################################################################################
+## ##
+## Copyright (c) 2012 FUJITSU LIMITED ##
+## ##
+## This program is free software; you can redistribute it and#or modify ##
+## it under the terms of the GNU General Public License as published by ##
+## the Free Software Foundation; either version 2 of the License, or ##
+## (at your option) any later version. ##
+## ##
+## This program is distributed in the hope that it will be useful, but ##
+## WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY ##
+## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License ##
+## for more details. ##
+## ##
+## You should have received a copy of the GNU General Public License ##
+## along with this program; if not, write to the Free Software ##
+## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ##
+## ##
+## Author: Peng Haitao <pe...@cn...> ##
+## ##
+################################################################################
+
+if [ "x$(grep -w memory /proc/cgroups | cut -f4)" != "x1" ]; then
+ echo "WARNING:";
+ echo "Either Kernel does not support for memory resource controller or feature not enabled";
+ echo "Skipping all memcgroup testcases....";
+ exit 0
+fi
+
+cd $LTPROOT/testcases/bin
+
+TEST_PATH=$PWD
+PAGESIZE=`./memcg_getpagesize`
+HUGEPAGESIZE=`grep Hugepagesize /proc/meminfo | awk '{ print $2 }'`
+[ -z $HUGEPAGESIZE ] && HUGEPAGESIZE=0
+HUGEPAGESIZE=$(( $HUGEPAGESIZE * 1024 ))
+PASS=0
+FAIL=1
+
+cur_id=0
+failed=0
+
+# Record the test result of a test case
+# $1 - The result of the test case, $PASS or $FAIL
+# $2 - The output information
+result()
+{
+ local pass=$1
+ local info="$2"
+
+ if [ $pass -eq $PASS ]; then
+ tst_resm TPASS "$info"
+ else
+ tst_resm TFAIL "$info"
+ : $(( failed += 1 ))
+ fi
+}
+
+# Check size in memcg
+# $1 - Item name
+# $2 - Expected size
+check_mem_stat()
+{
+ if [ -e $1 ]; then
+ item_size=`cat $1`
+ else
+ item_size=`grep -w $1 memory.stat | cut -d " " -f 2`
+ fi
+
+ if [ "$2" = "$item_size" ]; then
+ pass=$PASS
+ else
+ pass=$FAIL
+ fi
+
+ result $pass "$1=$item_size/$2"
+}
+
+warmup()
+{
+ pid=$1
+
+ echo "Warming up for test: $cur_id, pid: $pid"
+ kill -s USR1 $pid 2> /dev/null
+ sleep 1
+ kill -s USR1 $pid 2> /dev/null
+ sleep 1
+
+ kill -0 $pid
+ if [ $? -ne 0 ]; then
+ result $FAIL "cur_id=$cur_id"
+ return 1
+ else
+ echo "Process is still here after warm up: $pid"
+ fi
+
+ return 0
+}
+
+# Run test cases which checks memory.stat after make
+# some memory allocation
+# $1 - the parameters of 'process', such as --shm
+# $2 - the -s parameter of 'process', such as 4096
+# $3 - item name in memory.stat
+# $4 - the expected size
+# $5 - check after free ?
+test_mem_stat()
+{
+ echo "Running $TEST_PATH/memcg_process $1 -s $2"
+ $TEST_PATH/memcg_process $1 -s $2 &
+ sleep 1
+
+ warmup $!
+ if [ $? -ne 0 ]; then
+ return
+ fi
+
+ echo $! > tasks
+ kill -s USR1 $! 2> /dev/null
+ sleep 1
+
+ check_mem_stat $3 $4
+
+ kill -s USR1 $! 2> /dev/null
+ sleep 1
+ if [ $5 -eq 1 ]; then
+ check_mem_stat $3 0
+ fi
+
+ kill -s INT $! 2> /dev/null
+}
+
+# Run test cases which checks memory.max_usage_in_bytes after make
+# some memory allocation
+# $1 - the parameters of 'process', such as --shm
+# $2 - the -s parameter of 'process', such as 4096
+# $3 - item name
+# $4 - the expected size
+# $5 - check after free ?
+test_max_usage_in_bytes()
+{
+ echo "Running $TEST_PATH/memcg_process $1 -s $2"
+ $TEST_PATH/memcg_process $1 -s $2 &
+ sleep 1
+
+ warmup $!
+ if [ $? -ne 0 ]; then
+ return
+ fi
+
+ echo $! > tasks
+ kill -s USR1 $! 2> /dev/null
+ sleep 1
+
+ kill -s USR1 $! 2> /dev/null
+ sleep 1
+
+ check_mem_stat $3 $4
+
+ if [ $5 -eq 1 ]; then
+ echo 0 > $3
+ check_mem_stat $3 0
+ fi
+
+ kill -s INT $! 2> /dev/null
+}
+
+# make some memory allocation
+# $1 - the parameters of 'process', such as --shm
+# $2 - the -s parameter of 'process', such as 4096
+malloc_free_memory()
+{
+ echo "Running $TEST_PATH/memcg_process $1 -s $2"
+ $TEST_PATH/memcg_process $1 -s $2 &
+ sleep 1
+
+ echo $! > tasks
+ kill -s USR1 $! 2> /dev/null
+ sleep 1
+
+ kill -s USR1 $! 2> /dev/null
+ sleep 1
+
+ kill -s INT $! 2> /dev/null
+}
+
+# Test if failcnt > 0, which means page reclamation occured
+# $1 - item name in memcg
+test_failcnt()
+{
+ failcnt=`cat $1`
+ if [ $failcnt -gt 0 ]; then
+ pass=$PASS
+ else
+ pass=$FAIL
+ fi
+
+ result $pass "$1=$failcnt"
+}
+
+# Test process will be killed due to exceed memory limit
+# $1 - the value of memory.limit_in_bytes
+# $2 - the parameters of 'process', such as --shm
+# $3 - the -s parameter of 'process', such as 4096
+# $4 - use mem+swap limitation
+test_proc_kill()
+{
+ echo $1 > memory.limit_in_bytes
+ if [ $4 -eq 1 ]; then
+ if [ -e memory.memsw.limit_in_bytes ]; then
+ echo $1 > memory.memsw.limit_in_bytes
+ else
+ tst_resm TCONF "mem+swap is not enabled"
+ return
+ fi
+ fi
+
+ $TEST_PATH/memcg_process $2 -s $3 &
+ pid=$!
+ sleep 1
+ echo $pid > tasks
+
+ kill -s USR1 $pid 2> /dev/null
+ sleep 1
+
+ ps -p $pid > /dev/null 2> /dev/null
+ if [ $? -ne 0 ]; then
+ wait $pid
+ if [ $? -eq 1 ]; then
+ result $FAIL "process $pid is killed by error"
+ else
+ result $PASS "process $pid is killed"
+ fi
+ else
+ kill -s INT $pid 2> /dev/null
+ result $FAIL "process $pid is not killed"
+ fi
+}
+
+# Test limit_in_bytes will be aligned to PAGESIZE
+# $1 - user input value
+# $2 - expected value
+# $3 - use mem+swap limitation
+test_limit_in_bytes()
+{
+ echo $1 > memory.limit_in_bytes
+ if [ $3 -eq 1 ]; then
+ if [ -e memory.memsw.limit_in_bytes ]; then
+ echo $1 > memory.memsw.limit_in_bytes
+ limit=`cat memory.memsw.limit_in_bytes`
+ else
+ tst_resm TCONF "mem+swap is not enabled"
+ return
+ fi
+ else
+ limit=`cat memory.limit_in_bytes`
+ fi
+
+ if [ $limit -eq $2 ]; then
+ result $PASS "input=$1, limit_in_bytes=$limit"
+ else
+ result $FAIL "input=$1, limit_in_bytes=$limit"
+ fi
+}
+
+# Test memory controller doesn't charge hugepage
+# $1 - the value of /proc/sys/vm/nr_hugepages
+# $2 - the parameters of 'process', --mmap-file or --shm
+# $3 - the -s parameter of 'process', such as $HUGEPAGESIZE
+# $4 - 0: expected failure, 1: expected success
+test_hugepage()
+{
+ TMP_FILE=$TEST_PATH/tmp
+ nr_hugepages=`cat /proc/sys/vm/nr_hugepages`
+
+ mkdir /hugetlb
+ mount -t hugetlbfs none /hugetlb
+
+ echo $1 > /proc/sys/vm/nr_hugepages
+
+ $TEST_PATH/memcg_process $2 --hugepage -s $3 > $TMP_FILE 2>&1 &
+ sleep 1
+
+ kill -s USR1 $! 2> /dev/null
+ sleep 1
+
+ check_mem_stat "rss" 0
+
+ echo "TMP_FILE:"
+ cat $TMP_FILE
+
+ if [ $4 -eq 0 ]; then
+ test -s $TMP_FILE
+ if [ $? -eq 0 ]; then
+ result $PASS "allocate hugepage failed as expected"
+ else
+ kill -s USR1 $! 2> /dev/null
+ kill -s INT $! 2> /dev/null
+ result $FAIL "allocate hugepage shoud fail"
+ fi
+ else
+ test ! -s $TMP_FILE
+ if [ $? -eq 0 ]; then
+ kill -s USR1 $! 2> /dev/null
+ kill -s INT $! 2> /dev/null
+ result $PASS "allocate hugepage succeeded"
+ else
+ result $FAIL "allocate hugepage failed"
+ fi
+ fi
+
+ sleep 1
+ rm -rf $TMP_FILE
+ umount /hugetlb
+ rmdir /hugetlb
+ echo $nr_hugepages > /proc/sys/vm/nr_hugepages
+}
+
+# Test the memory charge won't move to subgroup
+# $1 - memory.limit_in_bytes in parent group
+# $2 - memory.limit_in_bytes in sub group
+test_subgroup()
+{
+ mkdir subgroup
+ echo $1 > memory.limit_in_bytes
+ echo $2 > subgroup/memory.limit_in_bytes
+
+ echo "Running $TEST_PATH/memcg_process --mmap-anon -s $PAGESIZE"
+ $TEST_PATH/memcg_process --mmap-anon -s $PAGESIZE &
+ sleep 1
+
+ warmup $!
+ if [ $? -ne 0 ]; then
+ return
+ fi
+
+ echo $! > tasks
+ kill -s USR1 $! 2> /dev/null
+ sleep 1
+ check_mem_stat "rss" $PAGESIZE
+
+ cd subgroup
+ echo $! > tasks
+ check_mem_stat "rss" 0
+
+ # cleanup
+ cd ..
+ echo $! > tasks
+ kill -s INT $! 2> /dev/null
+ sleep 1
+ rmdir subgroup
+}
+
+# Run test cases which test memory.move_charge_at_immigrate
+# $1 - the parameters of 'process', such as --shm
+# $2 - the -s parameter of 'process', such as 4096
+# $3 - some positive value, such as 1
+# $4 - the expected size
+# $5 - the expected size
+test_move_charge()
+{
+ mkdir subgroup_a
+
+ $TEST_PATH/memcg_process $1 -s $2 &
+ sleep 1
+ warmup $!
+ if [ $? -ne 0 ]; then
+ rmdir subgroup_a
+ return
+ fi
+
+ echo $! > subgroup_a/tasks
+ kill -s USR1 $!
+ sleep 1
+
+ mkdir subgroup_b
+ echo $3 > subgroup_b/memory.move_charge_at_immigrate
+ echo $! > subgroup_b/tasks
+
+ cd subgroup_b
+ check_mem_stat memory.usage_in_bytes $4
+ cd ../subgroup_a
+ check_mem_stat memory.usage_in_bytes $5
+
+ cd ..
+ echo $! > tasks
+ kill -s USR1 $!
+ kill -s INT $!
+ sleep 1
+ rmdir subgroup_a subgroup_b
+}
+
+cleanup()
+{
+ killall -9 memcg_process 2>/dev/null
+ if [ -e /dev/memcg ]; then
+ umount /dev/memcg 2>/dev/null
+ rmdir /dev/memcg 2>/dev/null
+ fi
+}
+
+do_mount()
+{
+ cleanup
+
+ mkdir /dev/memcg 2> /dev/null
+ mount -t cgroup -omemory memcg /dev/memcg
+}
--
1.7.1
--
Best Regards,
Peng
|