When running the Memory Controller test # 4, I'm seeing this behavior below.
TEST 4: MEMORY CONTROLLER TESTING
RUNNING SETUP.....
TEST STARTED: Please avoid using system while this test executes
/mnt/tests/kernel/distribution/ltp/20090731/ltp-full-20090731/testcases/bin/run_memctl_test.sh:
line 327: [: 62955520: unary operator expected
TINFO Memory Resource Controller: stat check test fails in first run
/mnt/tests/kernel/distribution/ltp/20090731/ltp-full-20090731/testcases/bin/run_memctl_test.sh:
line 364: [: 78704640: unary operator expected
TFAIL Memory Resource Controller: stat check test FAILED
*** infinite loop here, script exists memctl_test01 remains running ***
^Cincrementing stop
The bash error is due to the 'grep -w "active"' not matching anything so
one of the variables isn't getting set like it is supposed to. I believe
the test was written with an old version of the memory controller what
put a field called memory.stat.active in the file memory.stat. The
current memory controller I am testing appears to have replaced this
field with "rss". There are fields showing anonymous and file backed
pages in memory.stat, but I don't think they are ever going to match the
memory.usage.in.bytes the test is looking for. Rss always matches and I
believe that is what we should update the check in the test to look for.
The attached patch fixes test #4 to compare memory.usage.in.bytes with rss.
--- ltp-full-20090731/testcases/kernel/controllers/memctl/run_memctl_test.sh
2008-05-26 07:26:44.000000000 -0400
+++ run_memctl_test.sh.new 2009-08-24 14:17:12.475154507 -0400
@@ -323,7 +323,7 @@
check_mem_allocated;# $MEM_TOTAL;
# now we can check the memory usage from both files
USAGE_FROM_STAT=`cat /dev/memctl/group_1/memory.stat \
- | grep -w "active" | cut -d" " -f2`;
+ | grep -w "rss" | cut -d" " -f2`;
if [ $USAGE_FROM_USAGE_IN_BYTES -eq $USAGE_FROM_STAT ]
then
echo "memory usage from memory.usage_in_bytes=
$USAGE_FROM_USAGE_IN_BYTES";
@@ -360,7 +360,7 @@
# now we can check the memory usage from both files
USAGE_FROM_STAT=`cat /dev/memctl/group_1/memory.stat \
- | grep -w "active" | cut -d" " -f2`;
+ | grep -w "rss" | cut -d" " -f2`;
if [ $USAGE_FROM_USAGE_IN_BYTESGRP1_MEMUSAGE -eq
$USAGE_FROM_STAT ] \
&& [ $FIRST_STEP_PASS
-eq 1 ]
then
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