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* [LTP]  [PATCH] mm/oom05: new testcase
@ 2012-06-26 15:57 Zhouping Liu
  2012-06-29  2:23 ` Zhouping Liu
  0 siblings, 1 reply; 13+ messages in thread
From: Zhouping Liu @ 2012-06-26 15:57 UTC (permalink / raw)
  To: LTP List

add a new testcase to test OOM on each NUMA node

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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^ permalink raw reply related	[flat|nested] 13+ messages in thread
end of thread, other threads:[~2012-07-10 11:06 UTC | newest]

Thread overview: 13+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2012-06-26 15:57 [LTP] [PATCH] mm/oom05: new testcase Zhouping Liu
2012-06-29  2:23 ` Zhouping Liu
2012-06-29  2:39   ` Wanlong Gao
2012-06-29  4:37     ` Zhouping Liu
2012-07-03  7:41       ` Caspar Zhang
2012-07-03  8:03       ` Jan Stancek
2012-07-03  8:43         ` Zhouping Liu
2012-07-03  8:55           ` Wanlong Gao
2012-07-03  9:27           ` Jan Stancek
2012-07-10 10:37       ` Caspar Zhang
2012-07-10 10:49         ` Jan Stancek
2012-07-10 11:05           ` Caspar Zhang
2012-06-29  7:33     ` Jan Stancek

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