Re: [LTP] [PATCH] mm/oom05: new testcase

[Wanlong Gao <gaowanlong@cn.fujitsu.com>]

On 06/29/2012 10:23 AM, Zhouping Liu wrote:
> Hi,
> 
> ----- Original Message -----
>> From: "Zhouping Liu" <zliu@redhat.com>
>> To: "LTP List" <ltp-list@lists.sourceforge.net>
>> Sent: Tuesday, June 26, 2012 11:57:35 PM
>> Subject: [LTP]  [PATCH] mm/oom05: new testcase
>>
>> add a new testcase to test OOM on each NUMA node
> 
> I have tested it in several systems with 2 NUMA nodes and 8 NUMA nodes,
> they are all good, any comment?
> 
> Thanks,
> Zhouping
> 
>>
>> Signed-off-by: Zhouping Liu <zliu@redhat.com>
>> ---
>>  runtest/mm                       |    1 +
>>  testcases/kernel/mem/oom/oom05.c |  131
>>  ++++++++++++++++++++++++++++++++++++++
>>  2 files changed, 132 insertions(+)
>>  create mode 100644 testcases/kernel/mem/oom/oom05.c
>>
>> diff --git a/runtest/mm b/runtest/mm
>> index 2dd66f0..a60c04b 100644
>> --- a/runtest/mm
>> +++ b/runtest/mm
>> @@ -77,6 +77,7 @@ oom01 oom01
>>  oom02 oom02
>>  oom03 oom03
>>  oom04 oom04
>> +oom05 oom05
>>  
>>  swapping01 swapping01 -i 5
>>  
>> diff --git a/testcases/kernel/mem/oom/oom05.c
>> b/testcases/kernel/mem/oom/oom05.c
>> new file mode 100644
>> index 0000000..046ddbb
>> --- /dev/null
>> +++ b/testcases/kernel/mem/oom/oom05.c
>> @@ -0,0 +1,131 @@
>> +/*
>> + * Out Of Memory (OOM) on Each NUMA nodes
>> + *
>> + * The program is designed to cope with unpredictable like amount
>> and
>> + * system physical memory, swap size and other VMM technology like
>> KSM,
>> + * memcg, memory hotplug and so on which may affect the OOM
>> + * behaviours. It simply increase the memory consumption 3G each
>> time
>> + * until all the available memory is consumed and OOM is triggered.
>> + *
>> + * Copyright (C) 2012  Red Hat, Inc.
>> + * This program is free software; you can redistribute it and/or
>> + * modify it under the terms of version 2 of the GNU General Public
>> + * License as published by the Free Software Foundation.
>> + *
>> + * This program is distributed in the hope that it would be useful,
>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
>> + *
>> + * Further, this software is distributed without any warranty that
>> it
>> + * is free of the rightful claim of any third person regarding
>> + * infringement or the like.  Any license provided herein, whether
>> + * implied or otherwise, applies only to this software file.  Patent
>> + * licenses, if any, provided herein do not apply to combinations of
>> + * this program with other software, or any other product
>> whatsoever.
>> + *
>> + * You should have received a copy of the GNU General Public License
>> + * along with this program; if not, write the Free Software
>> + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
>> + * 02110-1301, USA.
>> + */
>> +#include <sys/types.h>
>> +#include <sys/stat.h>
>> +#include <sys/wait.h>
>> +#include <errno.h>
>> +#include <fcntl.h>
>> +#include <stdio.h>
>> +#include <stdlib.h>
>> +#include <unistd.h>
>> +#include "test.h"
>> +#include "safe_macros.h"
>> +#include "usctest.h"
>> +#include "mem.h"
>> +
>> +char *TCID = "oom05";
>> +int TST_TOTAL = 1;
>> +
>> +#if HAVE_NUMA_H && HAVE_LINUX_MEMPOLICY_H && HAVE_NUMAIF_H \
>> +	&& HAVE_MPOL_CONSTANTS
>> +#include <numa.h>
>> +#include <numaif.h>
>> +
>> +int main(int argc, char *argv[])
>> +{
>> +	char *msg;
>> +	int lc;
>> +	long nodes[MAXNODES];
>> +	int nnodes, i;
>> +	pid_t pids[MAXNODES];
>> +	int status;
>> +	unsigned long nmasks[MAXNODES];
>> +
>> +	msg = parse_opts(argc, argv, NULL, NULL);
>> +	if (msg != NULL)
>> +		tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
>> +
>> +#if __WORDSIZE == 32
>> +	tst_brkm(TCONF, NULL, "test is not designed for 32-bit system.");
>> +#endif
>> +	nnodes = count_numa(nodes);
>> +	if (nnodes <= 1)
>> +		tst_brkm(TCONF, NULL, "required a NUMA system.");
>> +
>> +	setup();
>> +
>> +	set_sys_tune("overcommit_memory", 1, 1);
>> +
>> +	for (lc = 0; TEST_LOOPING(lc); lc++) {
>> +		Tst_count = 0;
>> +
>> +		for (i = 0; i < nnodes; i++) {
>> +			nmasks[i] = 1 << nodes[i];
>> +			switch (pids[i] = fork()) {
>> +			case -1:
>> +				tst_brkm(TBROK|TERRNO, cleanup, "fork");
>> +			case 0:
>> +				if (set_mempolicy(MPOL_BIND, &nmasks[i],
>> +				    MAXNODES) == -1)
>> +					tst_brkm(TBROK|TERRNO, cleanup,
>> +					    "set_mempolicy");
>> +				tst_resm(TINFO, "start oom on numa node%lu",
>> +				    nodes[i]);
>> +				oom(NORMAL, 0, 0);
>> +				exit(0);
>> +			}
>> +		}

Hi Zhouping,

Does it need get_allowed_nodes() that Jan added?

Thanks,
Wanlong Gao

>> +
>> +		for (i = 0; i < nnodes; i++) {
>> +			if (waitpid(pids[i], &status, WUNTRACED|WCONTINUED) == -1)
>> +				tst_brkm(TBROK|TERRNO, cleanup, "waitpid");
>> +
>> +			if (WIFEXITED(status) && WEXITSTATUS(status) != 0)
>> +				tst_resm(TFAIL, "child[%d] exit with "
>> +				    "status: %d", pids[i], status);
>> +		}
>> +	}
>> +	cleanup();
>> +	tst_exit();
>> +}
>> +
>> +void setup(void)
>> +{
>> +	tst_require_root(NULL);
>> +	tst_sig(FORK, DEF_HANDLER, cleanup);
>> +	TEST_PAUSE;
>> +
>> +	overcommit = get_sys_tune("overcommit_memory");
>> +}
>> +
>> +void cleanup(void)
>> +{
>> +	set_sys_tune("overcommit_memory", overcommit, 0);
>> +
>> +	TEST_CLEANUP;
>> +}
>> +
>> +#else /* no NUMA */
>> +int main(void)
>> +{
>> +	tst_brkm(TCONF, NULL, "no NUMA development packages installed.");
>> +}
>> +#endif
>> --
>> 1.7.10.2
>>
>>
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> 



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