2 files changed, 197 insertions, 0 deletions
diff --git a/tools/regression/aio/aiop/Makefile b/tools/regression/aio/aiop/Makefile
new file mode 100644
index 0000000..3d9615c
--- /dev/null
+++ b/tools/regression/aio/aiop/Makefile
@@ -0,0 +1,6 @@
+# $FreeBSD$
+
+PROG=	aiop
+NO_MAN=
+
+.include <bsd.prog.mk>
diff --git a/tools/regression/aio/aiop/aiop.c b/tools/regression/aio/aiop/aiop.c
new file mode 100644
index 0000000..c1f2326
--- /dev/null
+++ b/tools/regression/aio/aiop/aiop.c
@@ -0,0 +1,191 @@
+/*
+ * Copyright (c) 2002 Adrian Chadd <adrian@FreeBSD.org>.
+ * All rights reserved.
+ *
+ * This software was developed for the FreeBSD Project by Marshall
+ * Kirk McKusick and Network Associates Laboratories, the Security
+ * Research Division of Network Associates, Inc. under DARPA/SPAWAR
+ * contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
+ * research program.
+ *
+ * Copyright (c) 1980, 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * 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.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <time.h>
+#include <sys/ioctl.h>
+#include <sys/disk.h>
+#include <aio.h>
+#include <fcntl.h>
+#include <string.h>
+#include <ctype.h>
+#include <assert.h>
+
+/*
+ * This is a bit of a quick hack to do parallel IO testing through POSIX AIO.
+ * Its specifically designed to work under FreeBSD and its derivatives;
+ * note how I cheat by using aio_waitcomplete().
+ *
+ * TODO:
+ *
+ * + Add write support; so we can make sure we're not hitting throughput issues
+ *   with read/modify/write of entire tracks of the disk
+ * + Add in per-op stats - time and offset - so one could start mapping out
+ *   the speed hotspots of the disk
+ * + Add in different distributions - random, normal, left/right skewed normal,
+ *   zipf, etc - and perhaps add the ability to run concurrent distributions
+ *   (so a normal and a zipf; and also a random read; zipf write, etc.)
+ *
+ * Adrian Chadd <adrian@creative.net.au>
+ */
+
+static size_t
+disk_getsize(int fd)
+{
+	off_t mediasize;	
+
+	if (ioctl(fd, DIOCGMEDIASIZE, &mediasize) < 0) {
+		perror("ioctl(DIOCGMEDIASIZE)");
+		exit(1);
+	}
+	return mediasize;
+}
+
+
+void
+set_aio(struct aiocb *a, int fd, off_t offset, int size, char *buf)
+{
+	int r;
+	bzero(a, sizeof(*a));
+	a->aio_fildes = fd;
+	a->aio_nbytes = size;
+	a->aio_offset = offset;
+	a->aio_buf = buf;
+	r = aio_read(a);
+	if (r != 0) {
+		perror("aio_read");
+		exit(1);
+	}
+}
+
+int
+main(int argc, char *argv[])
+{
+	int fd;
+	struct stat sb;
+	struct aiocb *aio;
+	char **abuf;
+	const char *fn;
+	int aio_len;
+	int io_size, nrun;
+	off_t file_size, offset;
+	struct aiocb *a;
+	int i, n;
+        struct timeval st, et, rt;
+        float f_rt;
+
+
+	if (argc < 5) {
+		printf("Usage: %s <file> <io size> <number of runs> <concurrency>\n", argv[0]);
+		exit(1);
+	}
+
+	fn = argv[1];
+	io_size = atoi(argv[2]);
+	nrun = atoi(argv[3]);
+	aio_len = atoi(argv[4]);
+
+	/*
+	 * Random returns values between 0 and (2^32)-1; only good for 4 gig.
+	 * Lets instead treat random() as returning a block offset w/ block size
+	 * being "io_size", so we can handle > 4 gig files.
+	 */
+
+	fd = open(fn, O_RDONLY | O_DIRECT);
+	if (fd < 0) {
+		perror("open");
+		exit(1);
+	}
+	if (fstat(fd, &sb) < 0) {
+		perror("fstat");
+		exit(1);
+	}
+	if (S_ISREG(sb.st_mode)) {
+		file_size = sb.st_size;
+	} else if (S_ISBLK(sb.st_mode) || S_ISCHR(sb.st_mode)) {
+		file_size = disk_getsize(fd);
+	} else {
+		perror("unknown file type\n");
+		exit(1);
+	}
+	printf("File: %s; File size %ld bytes\n", fn, (long) file_size);
+
+	aio = calloc(aio_len, sizeof(struct aiocb));
+	abuf = calloc(aio_len, sizeof(char *));
+	for (i = 0; i < aio_len; i++) {
+		abuf[i] = calloc(1, io_size * sizeof(char));
+	}
+
+	/* Fill with the initial contents */
+        gettimeofday(&st, NULL);
+	for (i = 0; i < aio_len; i++) {
+                offset = random() % (file_size / io_size);
+                offset *= io_size;
+		set_aio(aio + i, fd, offset, io_size, abuf[i]);
+	}
+
+	for (i = 0; i < nrun; i++) {
+		aio_waitcomplete(&a, NULL);
+		n = a - aio;
+		assert(n < aio_len);
+		assert(n >= 0);
+                offset = random() % (file_size / io_size);
+                offset *= io_size;
+		set_aio(aio + n, fd, offset, io_size, abuf[n]);
+	}
+
+        gettimeofday(&et, NULL);
+        timersub(&et, &st, &rt);
+        f_rt = ((float) (rt.tv_usec)) / 1000000.0;
+        f_rt += (float) (rt.tv_sec);
+        printf("Runtime: %.2f seconds, ", f_rt);
+        printf("Op rate: %.2f ops/sec, ", ((float) (nrun))  / f_rt);
+        printf("Avg transfer rate: %.2f bytes/sec\n", ((float) (nrun)) * ((float)io_size) / f_rt);
+
+
+
+	exit(0);
+}