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

Zhouping Liu
2012-06-29T02:24:06Z

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);
> + }
> + }
> +
> + 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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--
Thanks,
Zhouping