1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (C) 2012-2013 Intel Corporation
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/param.h>
30#include <sys/ioccom.h>
31
32#include <ctype.h>
33#include <err.h>
34#include <fcntl.h>
35#include <inttypes.h>
36#include <stdbool.h>
37#include <stddef.h>
38#include <stdio.h>
39#include <stdlib.h>
40#include <string.h>
41#include <sysexits.h>
42#include <unistd.h>
43
44#include "nvmecontrol.h"
45
46/* Tables for command line parsing */
47
48static cmd_fn_t perftest;
49
50#define NONE 0xffffffffu
51static struct options {
52	bool		perthread;
53	uint32_t	threads;
54	uint32_t	size;
55	uint32_t	time;
56	const char	*op;
57	const char	*intr;
58	const char	*flags;
59	const char	*dev;
60} opt = {
61	.perthread = false,
62	.threads = 0,
63	.size = 0,
64	.time = 0,
65	.op = NULL,
66	.intr = NULL,
67	.flags = NULL,
68	.dev = NULL,
69};
70
71
72static const struct opts perftest_opts[] = {
73#define OPT(l, s, t, opt, addr, desc) { l, s, t, &opt.addr, desc }
74	OPT("perthread", 'p', arg_none, opt, perthread,
75	    "Report per-thread results"),
76	OPT("threads", 'n', arg_uint32, opt, threads,
77	    "Number of threads to run"),
78	OPT("size", 's', arg_uint32, opt, size,
79	    "Size of the test"),
80	OPT("time", 't', arg_uint32, opt, time,
81	    "How long to run the test in seconds"),
82	OPT("operation", 'o', arg_string, opt, op,
83	    "Operation type: 'read' or 'write'"),
84	OPT("interrupt", 'i', arg_string, opt, intr,
85	    "Interrupt mode: 'intr' or 'wait'"),
86	OPT("flags", 'f', arg_string, opt, flags,
87	    "Turn on testing flags: refthread"),
88	{ NULL, 0, arg_none, NULL, NULL }
89};
90#undef OPT
91
92static const struct args perftest_args[] = {
93	{ arg_string, &opt.dev, "namespace-id" },
94	{ arg_none, NULL, NULL },
95};
96
97static struct cmd perftest_cmd = {
98	.name = "perftest",
99	.fn = perftest,
100	.descr = "Perform low-level performance testing",
101	.ctx_size = sizeof(opt),
102	.opts = perftest_opts,
103	.args = perftest_args,
104};
105
106CMD_COMMAND(perftest_cmd);
107
108/* End of tables for command line parsing */
109
110static void
111print_perftest(struct nvme_io_test *io_test, bool perthread)
112{
113	uint64_t	io_completed = 0, iops, mbps;
114	uint32_t	i;
115
116	for (i = 0; i < io_test->num_threads; i++)
117		io_completed += io_test->io_completed[i];
118
119	iops = io_completed/io_test->time;
120	mbps = iops * io_test->size / (1024*1024);
121
122	printf("Threads: %2d Size: %6d %5s Time: %3d IO/s: %7ju MB/s: %4ju\n",
123	    io_test->num_threads, io_test->size,
124	    io_test->opc == NVME_OPC_READ ? "READ" : "WRITE",
125	    io_test->time, (uintmax_t)iops, (uintmax_t)mbps);
126
127	if (perthread)
128		for (i = 0; i < io_test->num_threads; i++)
129			printf("\t%3d: %8ju IO/s\n", i,
130			    (uintmax_t)io_test->io_completed[i]/io_test->time);
131}
132
133static void
134perftest(const struct cmd *f, int argc, char *argv[])
135{
136	struct nvme_io_test		io_test;
137	int				fd;
138	u_long				ioctl_cmd = NVME_IO_TEST;
139
140	memset(&io_test, 0, sizeof(io_test));
141	if (arg_parse(argc, argv, f))
142		return;
143
144	if (opt.op == NULL)
145		arg_help(argc, argv, f);
146	if (opt.flags != NULL && strcmp(opt.flags, "refthread") == 0)
147		io_test.flags |= NVME_TEST_FLAG_REFTHREAD;
148	if (opt.intr != NULL) {
149		if (strcmp(opt.intr, "bio") == 0 ||
150		    strcmp(opt.intr, "wait") == 0)
151			ioctl_cmd = NVME_BIO_TEST;
152		else if (strcmp(opt.intr, "io") == 0 ||
153		    strcmp(opt.intr, "intr") == 0)
154			ioctl_cmd = NVME_IO_TEST;
155		else {
156			fprintf(stderr, "Unknown interrupt test type %s\n", opt.intr);
157			arg_help(argc, argv, f);
158		}
159	}
160	if (opt.threads <= 0 || opt.threads > 128) {
161		fprintf(stderr, "Bad number of threads %d\n", opt.threads);
162		arg_help(argc, argv, f);
163	}
164	io_test.num_threads = opt.threads;
165	if (strcasecmp(opt.op, "read") == 0)
166		io_test.opc = NVME_OPC_READ;
167	else if (strcasecmp(opt.op, "write") == 0)
168		io_test.opc = NVME_OPC_WRITE;
169	else {
170		fprintf(stderr, "\"%s\" not valid opcode.\n", opt.op);
171		arg_help(argc, argv, f);
172	}
173	if (opt.time == 0) {
174		fprintf(stderr, "No time speciifed\n");
175		arg_help(argc, argv, f);
176	}
177	io_test.time = opt.time;
178	io_test.size = opt.size;
179	open_dev(opt.dev, &fd, 1, 1);
180	if (ioctl(fd, ioctl_cmd, &io_test) < 0)
181		err(EX_IOERR, "ioctl NVME_IO_TEST failed");
182
183	close(fd);
184	print_perftest(&io_test, opt.perthread);
185	exit(0);
186}
187