158 lines
3.5 KiB
Bash
Executable File
158 lines
3.5 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2013 EMC Corp.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# Swap test. Variation of testcases/swap.
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# OOM seen: https://people.freebsd.org/~pho/stress/log/swap.txt
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. ../default.cfg
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dir=/tmp
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odir=`pwd`
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cd $dir
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sed '1,/^EOF/d' < $odir/$0 > $dir/swap.c
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mycc -o swap -Wall -Wextra -O2 swap.c || exit 1
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rm -f swap.c
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usermem=`sysctl hw.usermem | sed 's/.* //'`
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if [ `sysctl -n vm.swap_total` -gt 0 ]; then
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size=$((usermem/10*11))
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else
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size=$((usermem/10*8))
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fi
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log=/tmp/swap.log
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tail -F -n 0 /var/log/messages > $log & lpid=$!
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/tmp/swap $((size / 4096))
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kill $lpid
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grep -m 1 "swp_pager_getswapspace" $log && s=1 || s=0
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rm $log
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rm -f /tmp/swap
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exit $s
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EOF
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#include <sys/types.h>
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/resource.h>
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#include <sys/sysctl.h>
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#include <sys/time.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#define RUNTIME (5 * 60)
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#define INCARNATIONS 32
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static unsigned long size, original;
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void
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setup(void)
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{
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struct rlimit rlp;
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size = size / INCARNATIONS;
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original = size;
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if (size == 0)
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errx(1, "Argument too small");
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if (getrlimit(RLIMIT_DATA, &rlp) < 0)
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err(1,"getrlimit");
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rlp.rlim_cur -= 1024 * 1024;
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if (size > (unsigned long)rlp.rlim_cur)
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size = rlp.rlim_cur;
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#if 0
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printf("setup: pid %d. Total %luMb\n",
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getpid(), size / 1024 / 1024 * INCARNATIONS);
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#endif
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if (size == 0)
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errx(1, "Argument too small");
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return;
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}
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int
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test(void)
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{
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volatile char *c;
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int page;
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unsigned long i, j;
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time_t start;
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c = malloc(size);
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while (c == NULL) {
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size -= 1024 * 1024;
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c = malloc(size);
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}
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if (size != original)
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printf("Malloc size changed from %ld Mb to %ld Mb\n",
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original / 1024 / 1024, size / 1024 / 1024);
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page = getpagesize();
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start = time(NULL);
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while ((time(NULL) - start) < RUNTIME) {
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i = j = 0;
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while (i < size) {
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c[i] = 0;
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i += page;
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if (++j % 1024 == 0) {
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if ((time(NULL) - start) >= RUNTIME)
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break;
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if (arc4random() % 100 < 5)
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usleep(1000);
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}
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}
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}
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free((void *)c);
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_exit(0);
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}
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int
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main(int argc, char **argv)
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{
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int i;
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if (argc != 2)
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errx(1, "Usage: %s bytes", argv[0]);
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size = atol(argv[1]) * 4096;
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setup();
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for (i = 0; i < INCARNATIONS; i++)
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if (fork() == 0)
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test();
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for (i = 0; i < INCARNATIONS; i++)
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wait(NULL);
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return (0);
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}
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