168 lines
3.8 KiB
Bash
Executable File
168 lines
3.8 KiB
Bash
Executable File
#!/bin/sh
|
|
|
|
#
|
|
# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
#
|
|
# Copyright (c) 2019 Dell EMC Isilon
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions
|
|
# are met:
|
|
# 1. Redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer.
|
|
# 2. Redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
# SUCH DAMAGE.
|
|
#
|
|
|
|
# No problems seen.
|
|
|
|
[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
|
|
|
|
. ../default.cfg
|
|
|
|
dir=/tmp
|
|
odir=`pwd`
|
|
cd $dir
|
|
sed '1,/^EOF/d' < $odir/$0 > $dir/shm2.c
|
|
mycc -o shm2 -Wall -Wextra -O0 -g shm2.c || exit 1
|
|
rm -f shm2.c
|
|
|
|
(cd $odir/../testcases/swap; ./swap -t 2m -i 20 -h -l 100) &
|
|
/tmp/shm2
|
|
while pkill swap; do sleep 1; done
|
|
wait
|
|
|
|
rm -rf /tmp/shm2
|
|
exit $s
|
|
|
|
EOF
|
|
#include <sys/types.h>
|
|
#include <sys/resource.h>
|
|
#include <sys/shm.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/time.h>
|
|
#include <sys/wait.h>
|
|
|
|
#include <vm/vm_param.h>
|
|
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#define INCARNATIONS 32
|
|
|
|
static unsigned long size, original;
|
|
static int runtime, utime;
|
|
|
|
static void
|
|
setup(void)
|
|
{
|
|
struct rlimit rlp;
|
|
|
|
size = size / INCARNATIONS;
|
|
original = size;
|
|
if (size == 0)
|
|
errx(1, "Argument too small");
|
|
|
|
if (getrlimit(RLIMIT_DATA, &rlp) < 0)
|
|
err(1,"getrlimit");
|
|
rlp.rlim_cur -= 1024 * 1024;
|
|
|
|
if (size > (unsigned long)rlp.rlim_cur)
|
|
size = rlp.rlim_cur;
|
|
|
|
#if 0
|
|
printf("setup: pid %d. Total %luMb\n",
|
|
getpid(), size / 1024 / 1024 * INCARNATIONS);
|
|
#endif
|
|
|
|
if (size == 0)
|
|
errx(1, "Argument too small");
|
|
|
|
return;
|
|
}
|
|
|
|
static int
|
|
test(void)
|
|
{
|
|
key_t shmkey;
|
|
volatile char *c;
|
|
int page, shmid;
|
|
unsigned long i, j;
|
|
time_t start;
|
|
|
|
shmkey = ftok("/tmp", getpid());
|
|
shmid = -1;
|
|
while (shmid == -1) {
|
|
if ((shmid = shmget(shmkey, size, IPC_CREAT | IPC_EXCL | 0640)) == -1) {
|
|
if (errno != ENOSPC && errno != EEXIST)
|
|
err(1, "shmget (%s:%d)", __FILE__, __LINE__);
|
|
} else
|
|
break;
|
|
size -= 1024;
|
|
}
|
|
if ((c = shmat(shmid, NULL, 0)) == (void *) -1)
|
|
err(1, "shmat");
|
|
if (size != original)
|
|
printf("shm size changed from %ld kb to %ld kb\n",
|
|
original / 1024, size / 1024);
|
|
page = getpagesize();
|
|
start = time(NULL);
|
|
while ((time(NULL) - start) < runtime) {
|
|
i = j = 0;
|
|
while (i < size) {
|
|
c[i] = 1;
|
|
i += page;
|
|
if ((time(NULL) - start) >= runtime)
|
|
break;
|
|
// usleep(utime);
|
|
}
|
|
}
|
|
if (shmdt((void *)c) == -1) {
|
|
if (errno != EINVAL)
|
|
warn("shmdt(%p)", c);
|
|
}
|
|
if (shmctl(shmid, IPC_RMID, NULL) == -1)
|
|
warn("shmctl IPC_RMID");
|
|
|
|
_exit(0);
|
|
}
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
pid_t pids[INCARNATIONS];
|
|
int i, verbose;
|
|
|
|
runtime = 120; /* 2 minutes */
|
|
utime = 1000; /* 0.001 sec */
|
|
verbose = 0;
|
|
size = 512 * 1024 * 1024;
|
|
setup();
|
|
|
|
for (i = 0; i < INCARNATIONS; i++)
|
|
if ((pids[i] = fork()) == 0)
|
|
test();
|
|
|
|
for (i = 0; i < INCARNATIONS; i++)
|
|
if (waitpid(pids[i], NULL, 0) != pids[i])
|
|
err(1, "waitpid(%d)", pids[i]);
|
|
|
|
return (0);
|
|
}
|