X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=init.c;h=2341915831d22eff07b88a468283aa24fe029cc2;hp=2ae93a026f2aad21025ea3eae8bfc1491646062b;hb=9ef56d461ae5c4e9a77dd8ea3025658271c79387;hpb=2615cc4b28e7d0e436a625dff92e6a71ccc6c49b

diff --git a/init.c b/init.c
index 2ae93a02..23419158 100644
--- a/init.c
+++ b/init.c
@@ -19,15 +19,23 @@
 #include "filehash.h"
 #include "verify.h"
 #include "profile.h"
+#include "server.h"
 
 #include "lib/getopt.h"
 
-static char fio_version_string[] = "fio 1.51";
+#if FIO_PATCH > 0
+static char fio_version_string[] =	__fio_stringify(FIO_MAJOR) "."	\
+					__fio_stringify(FIO_MINOR) "."	\
+					__fio_stringify(FIO_PATCH);
+#else
+static char fio_version_string[] =	__fio_stringify(FIO_MAJOR) "."	\
+					__fio_stringify(FIO_MINOR);
+#endif
 
 #define FIO_RANDSEED		(0xb1899bedUL)
 
 static char **ini_file;
-static int max_jobs = MAX_JOBS;
+static int max_jobs = FIO_MAX_JOBS;
 static int dump_cmdline;
 
 static struct thread_data def_thread;
@@ -43,11 +51,14 @@ char **job_sections = NULL;
 int nr_job_sections = 0;
 char *exec_profile = NULL;
 int warnings_fatal = 0;
+int terse_version = 2;
+int is_backend = 0;
+int nr_clients = 0;
+int log_syslog = 0;
 
 int write_bw_log = 0;
 int read_only = 0;
 
-static int def_timeout;
 static int write_lat_log;
 
 static int prev_group_jobs;
@@ -64,98 +75,185 @@ static char cmd_optstr[256];
  */
 static struct option l_opts[FIO_NR_OPTIONS] = {
 	{
-		.name		= "output",
+		.name		= (char *) "output",
 		.has_arg	= required_argument,
 		.val		= 'o',
 	},
 	{
-		.name		= "timeout",
+		.name		= (char *) "timeout",
 		.has_arg	= required_argument,
 		.val		= 't',
 	},
 	{
-		.name		= "latency-log",
+		.name		= (char *) "latency-log",
 		.has_arg	= required_argument,
 		.val		= 'l',
 	},
 	{
-		.name		= "bandwidth-log",
+		.name		= (char *) "bandwidth-log",
 		.has_arg	= required_argument,
 		.val		= 'b',
 	},
 	{
-		.name		= "minimal",
+		.name		= (char *) "minimal",
 		.has_arg	= optional_argument,
 		.val		= 'm',
 	},
 	{
-		.name		= "version",
+		.name		= (char *) "version",
 		.has_arg	= no_argument,
 		.val		= 'v',
 	},
 	{
-		.name		= "help",
+		.name		= (char *) "help",
 		.has_arg	= no_argument,
 		.val		= 'h',
 	},
 	{
-		.name		= "cmdhelp",
+		.name		= (char *) "cmdhelp",
 		.has_arg	= optional_argument,
 		.val		= 'c',
 	},
 	{
-		.name		= "showcmd",
+		.name		= (char *) "showcmd",
 		.has_arg	= no_argument,
 		.val		= 's',
 	},
 	{
-		.name		= "readonly",
+		.name		= (char *) "readonly",
 		.has_arg	= no_argument,
 		.val		= 'r',
 	},
 	{
-		.name		= "eta",
+		.name		= (char *) "eta",
 		.has_arg	= required_argument,
 		.val		= 'e',
 	},
 	{
-		.name		= "debug",
+		.name		= (char *) "debug",
 		.has_arg	= required_argument,
 		.val		= 'd',
 	},
 	{
-		.name		= "section",
+		.name		= (char *) "section",
 		.has_arg	= required_argument,
 		.val		= 'x',
 	},
 	{
-		.name		= "alloc-size",
+		.name		= (char *) "alloc-size",
 		.has_arg	= required_argument,
 		.val		= 'a',
 	},
 	{
-		.name		= "profile",
+		.name		= (char *) "profile",
 		.has_arg	= required_argument,
 		.val		= 'p',
 	},
 	{
-		.name		= "warnings-fatal",
+		.name		= (char *) "warnings-fatal",
 		.has_arg	= no_argument,
 		.val		= 'w',
 	},
+	{
+		.name		= (char *) "max-jobs",
+		.has_arg	= required_argument,
+		.val		= 'j',
+	},
+	{
+		.name		= (char *) "terse-version",
+		.has_arg	= required_argument,
+		.val		= 'V',
+	},
+	{
+		.name		= (char *) "server",
+		.has_arg	= no_argument,
+		.val		= 'S',
+	},
+	{	.name		= (char *) "daemonize",
+		.has_arg	= no_argument,
+		.val		= 'D',
+	},
+	{
+		.name		= (char *) "net-port",
+		.has_arg	= required_argument,
+		.val		= 'P',
+	},
+	{
+		.name		= (char *) "client",
+		.has_arg	= required_argument,
+		.val		= 'C',
+	},
 	{
 		.name		= NULL,
 	},
 };
 
-FILE *get_f_out()
+static void free_shm(void)
 {
-	return f_out;
+	struct shmid_ds sbuf;
+
+	if (threads) {
+		void *tp = threads;
+
+		threads = NULL;
+		file_hash_exit();
+		fio_debug_jobp = NULL;
+		shmdt(tp);
+		shmctl(shm_id, IPC_RMID, &sbuf);
+	}
+
+	scleanup();
 }
 
-FILE *get_f_err()
+/*
+ * The thread area is shared between the main process and the job
+ * threads/processes. So setup a shared memory segment that will hold
+ * all the job info. We use the end of the region for keeping track of
+ * open files across jobs, for file sharing.
+ */
+static int setup_thread_area(void)
 {
-	return f_err;
+	void *hash;
+
+	if (threads)
+		return 0;
+
+	/*
+	 * 1024 is too much on some machines, scale max_jobs if
+	 * we get a failure that looks like too large a shm segment
+	 */
+	do {
+		size_t size = max_jobs * sizeof(struct thread_data);
+
+		size += file_hash_size;
+		size += sizeof(unsigned int);
+
+		shm_id = shmget(0, size, IPC_CREAT | 0600);
+		if (shm_id != -1)
+			break;
+		if (errno != EINVAL) {
+			perror("shmget");
+			break;
+		}
+
+		max_jobs >>= 1;
+	} while (max_jobs);
+
+	if (shm_id == -1)
+		return 1;
+
+	threads = shmat(shm_id, NULL, 0);
+	if (threads == (void *) -1) {
+		perror("shmat");
+		return 1;
+	}
+
+	memset(threads, 0, max_jobs * sizeof(struct thread_data));
+	hash = (void *) threads + max_jobs * sizeof(struct thread_data);
+	fio_debug_jobp = (void *) hash + file_hash_size;
+	*fio_debug_jobp = -1;
+	file_hash_init(hash);
+	return 0;
 }
 
 /*
@@ -167,6 +265,10 @@ static struct thread_data *get_new_job(int global, struct thread_data *parent)
 
 	if (global)
 		return &def_thread;
+	if (setup_thread_area()) {
+		log_err("error: failed to setup shm segment\n");
+		return NULL;
+	}
 	if (thread_number >= max_jobs) {
 		log_err("error: maximum number of jobs (%d) reached.\n",
 				max_jobs);
@@ -191,7 +293,7 @@ static void put_job(struct thread_data *td)
 {
 	if (td == &def_thread)
 		return;
-	
+
 	profile_td_exit(td);
 
 	if (td->error)
@@ -463,7 +565,7 @@ static int exists_and_not_file(const char *filename)
 	return 1;
 }
 
-void td_fill_rand_seeds(struct thread_data *td)
+static void td_fill_rand_seeds_os(struct thread_data *td)
 {
 	os_random_seed(td->rand_seeds[0], &td->bsrange_state);
 	os_random_seed(td->rand_seeds[1], &td->verify_state);
@@ -482,9 +584,39 @@ void td_fill_rand_seeds(struct thread_data *td)
 		td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 
 	os_random_seed(td->rand_seeds[4], &td->random_state);
+}
+
+static void td_fill_rand_seeds_internal(struct thread_data *td)
+{
+	init_rand_seed(&td->__bsrange_state, td->rand_seeds[0]);
+	init_rand_seed(&td->__verify_state, td->rand_seeds[1]);
+	init_rand_seed(&td->__rwmix_state, td->rand_seeds[2]);
+
+	if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
+		init_rand_seed(&td->__next_file_state, td->rand_seeds[3]);
+
+	init_rand_seed(&td->__file_size_state, td->rand_seeds[5]);
+	init_rand_seed(&td->__trim_state, td->rand_seeds[6]);
+
+	if (!td_random(td))
+		return;
+
+	if (td->o.rand_repeatable)
+		td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
+
 	init_rand_seed(&td->__random_state, td->rand_seeds[4]);
 }
 
+void td_fill_rand_seeds(struct thread_data *td)
+{
+	if (td->o.use_os_rand)
+		td_fill_rand_seeds_os(td);
+	else
+		td_fill_rand_seeds_internal(td);
+
+	init_rand_seed(&td->buf_state, td->rand_seeds[7]);
+}
+
 /*
  * Initialize the various random states we need (random io, block size ranges,
  * read/write mix, etc).
@@ -540,7 +672,7 @@ static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 	}
 
 	if (profile_td_init(td))
-		return 1;
+		goto err;
 
 	engine = get_engine_name(td->o.ioengine);
 	td->io_ops = load_ioengine(td, engine);
@@ -584,6 +716,12 @@ static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 
 	td->mutex = fio_mutex_init(0);
 
+	td->ts.clat_percentiles = td->o.clat_percentiles;
+	if (td->o.overwrite_plist)
+		td->ts.percentile_list = td->o.percentile_list;
+	else
+		td->ts.percentile_list = NULL;
+
 	td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
 	td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
 	td->ts.lat_stat[0].min_val = td->ts.lat_stat[1].min_val = ULONG_MAX;
@@ -605,12 +743,12 @@ static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 		goto err;
 
 	if (td->o.write_lat_log) {
-		setup_log(&td->ts.lat_log);
-		setup_log(&td->ts.slat_log);
-		setup_log(&td->ts.clat_log);
+		setup_log(&td->lat_log);
+		setup_log(&td->slat_log);
+		setup_log(&td->clat_log);
 	}
 	if (td->o.write_bw_log)
-		setup_log(&td->ts.bw_log);
+		setup_log(&td->bw_log);
 
 	if (!td->o.name)
 		td->o.name = strdup(jobname);
@@ -743,7 +881,7 @@ static int is_empty_or_comment(char *line)
 			return 1;
 		if (line[i] == '#')
 			return 1;
-		if (!isspace(line[i]) && !iscntrl(line[i]))
+		if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
 			return 0;
 	}
 
@@ -753,7 +891,7 @@ static int is_empty_or_comment(char *line)
 /*
  * This is our [ini] type file parser.
  */
-static int parse_jobs_ini(char *file, int stonewall_flag)
+int parse_jobs_ini(char *file, int is_buf, int stonewall_flag)
 {
 	unsigned int global;
 	struct thread_data *td;
@@ -767,14 +905,18 @@ static int parse_jobs_ini(char *file, int stonewall_flag)
 	char **opts;
 	int i, alloc_opts, num_opts;
 
-	if (!strcmp(file, "-"))
-		f = stdin;
-	else
-		f = fopen(file, "r");
+	if (is_buf)
+		f = NULL;
+	else {
+		if (!strcmp(file, "-"))
+			f = stdin;
+		else
+			f = fopen(file, "r");
 
-	if (!f) {
-		perror("fopen job file");
-		return 1;
+		if (!f) {
+			perror("fopen job file");
+			return 1;
+		}
 	}
 
 	string = malloc(4096);
@@ -796,7 +938,10 @@ static int parse_jobs_ini(char *file, int stonewall_flag)
 		 * haven't handled.
 		 */
 		if (!skip_fgets) {
-			p = fgets(string, 4095, f);
+			if (is_buf)
+				p = strsep(&file, "\n");
+			else
+				p = fgets(string, 4095, f);
 			if (!p)
 				break;
 		}
@@ -807,7 +952,7 @@ static int parse_jobs_ini(char *file, int stonewall_flag)
 
 		if (is_empty_or_comment(p))
 			continue;
-		if (sscanf(p, "[%255s]", name) != 1) {
+		if (sscanf(p, "[%255[^\n]]", name) != 1) {
 			if (inside_skip)
 				continue;
 			log_err("fio: option <%s> outside of [] job section\n",
@@ -850,7 +995,14 @@ static int parse_jobs_ini(char *file, int stonewall_flag)
 		num_opts = 0;
 		memset(opts, 0, alloc_opts * sizeof(char *));
 
-		while ((p = fgets(string, 4096, f)) != NULL) {
+		while (1) {
+			if (is_buf)
+				p = strsep(&file, "\n");
+			else
+				p = fgets(string, 4096, f);
+			if (!p)
+				break;
+
 			if (is_empty_or_comment(p))
 				continue;
 
@@ -903,7 +1055,7 @@ static int parse_jobs_ini(char *file, int stonewall_flag)
 	free(string);
 	free(name);
 	free(opts);
-	if (f != stdin)
+	if (!is_buf && f != stdin)
 		fclose(f);
 	return ret;
 }
@@ -918,79 +1070,12 @@ static int fill_def_thread(void)
 	 * fill default options
 	 */
 	fio_fill_default_options(&def_thread);
-
-	def_thread.o.timeout = def_timeout;
-	return 0;
-}
-
-static void free_shm(void)
-{
-	struct shmid_ds sbuf;
-
-	if (threads) {
-		void *tp = threads;
-
-		threads = NULL;
-		file_hash_exit();
-		fio_debug_jobp = NULL;
-		shmdt(tp);
-		shmctl(shm_id, IPC_RMID, &sbuf);
-	}
-
-	scleanup();
-}
-
-/*
- * The thread area is shared between the main process and the job
- * threads/processes. So setup a shared memory segment that will hold
- * all the job info. We use the end of the region for keeping track of
- * open files across jobs, for file sharing.
- */
-static int setup_thread_area(void)
-{
-	void *hash;
-
-	/*
-	 * 1024 is too much on some machines, scale max_jobs if
-	 * we get a failure that looks like too large a shm segment
-	 */
-	do {
-		size_t size = max_jobs * sizeof(struct thread_data);
-
-		size += file_hash_size;
-		size += sizeof(unsigned int);
-
-		shm_id = shmget(0, size, IPC_CREAT | 0600);
-		if (shm_id != -1)
-			break;
-		if (errno != EINVAL) {
-			perror("shmget");
-			break;
-		}
-
-		max_jobs >>= 1;
-	} while (max_jobs);
-
-	if (shm_id == -1)
-		return 1;
-
-	threads = shmat(shm_id, NULL, 0);
-	if (threads == (void *) -1) {
-		perror("shmat");
-		return 1;
-	}
-
-	memset(threads, 0, max_jobs * sizeof(struct thread_data));
-	hash = (void *) threads + max_jobs * sizeof(struct thread_data);
-	fio_debug_jobp = (void *) hash + file_hash_size;
-	*fio_debug_jobp = -1;
-	file_hash_init(hash);
-	atexit(free_shm);
 	return 0;
 }
 
 static void usage(const char *name)
 {
+	printf("%s\n", fio_version_string);
 	printf("%s [options] [job options] <job file(s)>\n", name);
 	printf("\t--debug=options\tEnable debug logging\n");
 	printf("\t--output\tWrite output to file\n");
@@ -999,6 +1084,7 @@ static void usage(const char *name)
 	printf("\t--bandwidth-log\tGenerate per-job bandwidth logs\n");
 	printf("\t--minimal\tMinimal (terse) output\n");
 	printf("\t--version\tPrint version info and exit\n");
+	printf("\t--terse-version=x Terse version output format\n");
 	printf("\t--help\t\tPrint this page\n");
 	printf("\t--cmdhelp=cmd\tPrint command help, \"all\" for all of"
 		" them\n");
@@ -1011,6 +1097,10 @@ static void usage(const char *name)
 	printf("\t--alloc-size=kb\tSet smalloc pool to this size in kb"
 		" (def 1024)\n");
 	printf("\t--warnings-fatal Fio parser warnings are fatal\n");
+	printf("\t--max-jobs\tMaximum number of threads/processes to support\n");
+	printf("\t--server\tStart a backend fio server\n");
+	printf("\t--client=hostname Talk to remove backend fio server at hostname\n");
+	printf("\t--net-port=port\tUse specified port for client/server connection\n");
 	printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
 	printf("\n                   Jens Axboe <jaxboe@fusionio.com>\n");
 }
@@ -1030,6 +1120,7 @@ struct debug_level debug_levels[] = {
 	{ .name = "mutex",	.shift = FD_MUTEX },
 	{ .name	= "profile",	.shift = FD_PROFILE },
 	{ .name = "time",	.shift = FD_TIME },
+	{ .name = "net",	.shift = FD_NET },
 	{ .name = NULL, },
 };
 
@@ -1114,27 +1205,35 @@ static void fio_options_fill_optstring(void)
 	ostr[c] = '\0';
 }
 
-static int parse_cmd_line(int argc, char *argv[])
+int parse_cmd_line(int argc, char *argv[])
 {
 	struct thread_data *td = NULL;
 	int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
 	char *ostr = cmd_optstr;
+	int daemonize_server = 0;
+	char *cur_client = NULL;
+	int backend = 0;
 
 	while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
 		switch (c) {
 		case 'a':
+			fio_client_add_cmd_option(cur_client, argv[optind-1]);
 			smalloc_pool_size = atoi(optarg);
 			break;
 		case 't':
-			def_timeout = atoi(optarg);
+			fio_client_add_cmd_option(cur_client, argv[optind-1]);
+			def_thread.o.timeout = atoi(optarg);
 			break;
 		case 'l':
+			fio_client_add_cmd_option(cur_client, argv[optind-1]);
 			write_lat_log = 1;
 			break;
 		case 'b':
+			fio_client_add_cmd_option(cur_client, argv[optind-1]);
 			write_bw_log = 1;
 			break;
 		case 'o':
+			fio_client_add_cmd_option(cur_client, argv[optind-1]);
 			f_out = fopen(optarg, "w+");
 			if (!f_out) {
 				perror("fopen output");
@@ -1143,6 +1242,7 @@ static int parse_cmd_line(int argc, char *argv[])
 			f_err = f_out;
 			break;
 		case 'm':
+			fio_client_add_cmd_option(cur_client, argv[optind-1]);
 			terse_output = 1;
 			break;
 		case 'h':
@@ -1151,27 +1251,42 @@ static int parse_cmd_line(int argc, char *argv[])
 		case 'c':
 			exit(fio_show_option_help(optarg));
 		case 's':
+			fio_client_add_cmd_option(cur_client, argv[optind-1]);
 			dump_cmdline = 1;
 			break;
 		case 'r':
+			fio_client_add_cmd_option(cur_client, argv[optind-1]);
 			read_only = 1;
 			break;
 		case 'v':
 			log_info("%s\n", fio_version_string);
 			exit(0);
+		case 'V':
+			fio_client_add_cmd_option(cur_client, argv[optind-1]);
+			terse_version = atoi(optarg);
+			if (terse_version != 2) {
+				log_err("fio: bad terse version format\n");
+				exit_val = 1;
+				do_exit++;
+			}
+			break;
 		case 'e':
+			fio_client_add_cmd_option(cur_client, argv[optind-1]);
 			if (!strcmp("always", optarg))
 				eta_print = FIO_ETA_ALWAYS;
 			else if (!strcmp("never", optarg))
 				eta_print = FIO_ETA_NEVER;
 			break;
 		case 'd':
+			fio_client_add_cmd_option(cur_client, argv[optind-1]);
 			if (set_debug(optarg))
 				do_exit++;
 			break;
 		case 'x': {
 			size_t new_size;
 
+			fio_client_add_cmd_option(cur_client, argv[optind-1]);
+
 			if (!strcmp(optarg, "global")) {
 				log_err("fio: can't use global as only "
 					"section\n");
@@ -1186,18 +1301,19 @@ static int parse_cmd_line(int argc, char *argv[])
 			break;
 			}
 		case 'p':
+			fio_client_add_cmd_option(cur_client, argv[optind-1]);
 			exec_profile = strdup(optarg);
 			break;
 		case FIO_GETOPT_JOB: {
 			const char *opt = l_opts[lidx].name;
 			char *val = optarg;
 
+			fio_client_add_cmd_option(cur_client, argv[optind-1]);
+
 			if (!strncmp(opt, "name", 4) && td) {
 				ret = add_job(td, td->o.name ?: "fio", 0);
-				if (ret) {
-					put_job(td);
+				if (ret)
 					return 0;
-				}
 				td = NULL;
 			}
 			if (!td) {
@@ -1219,23 +1335,68 @@ static int parse_cmd_line(int argc, char *argv[])
 			break;
 		}
 		case 'w':
+			fio_client_add_cmd_option(cur_client, argv[optind-1]);
 			warnings_fatal = 1;
 			break;
+		case 'j':
+			fio_client_add_cmd_option(cur_client, argv[optind-1]);
+			max_jobs = atoi(optarg);
+			if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
+				log_err("fio: invalid max jobs: %d\n", max_jobs);
+				do_exit++;
+				exit_val = 1;
+			}
+			break;
+		case 'S':
+			if (nr_clients) {
+				log_err("fio: can't be both client and server\n");
+				do_exit++;
+				exit_val = 1;
+				break;
+			}
+			is_backend = 1;
+			backend = 1;
+			break;
+		case 'D':
+			daemonize_server = 1;
+			break;
+		case 'P':
+			fio_net_port = atoi(optarg);
+			break;
+		case 'C':
+			if (is_backend) {
+				log_err("fio: can't be both client and server\n");
+				do_exit++;
+				exit_val = 1;
+				break;
+			}
+			fio_client_add(optarg);
+			cur_client = optarg;
+			break;
 		default:
 			do_exit++;
 			exit_val = 1;
 			break;
 		}
+		if (do_exit)
+			break;
 	}
 
 	if (do_exit)
 		exit(exit_val);
 
+	if (nr_clients && fio_clients_connect()) {
+		do_exit++;
+		exit_val = 1;
+		return -1;
+	}
+
+	if (is_backend && backend)
+		return fio_start_server(daemonize_server);
+
 	if (td) {
 		if (!ret)
 			ret = add_job(td, td->o.name ?: "fio", 0);
-		if (ret)
-			put_job(td);
 	}
 
 	while (optind < argc) {
@@ -1258,19 +1419,27 @@ int parse_options(int argc, char *argv[])
 	fio_options_fill_optstring();
 	fio_options_dup_and_init(l_opts);
 
-	if (setup_thread_area())
-		return 1;
+	atexit(free_shm);
+
 	if (fill_def_thread())
 		return 1;
 
 	job_files = parse_cmd_line(argc, argv);
 
-	for (i = 0; i < job_files; i++) {
-		if (fill_def_thread())
-			return 1;
-		if (parse_jobs_ini(ini_file[i], i))
-			return 1;
-		free(ini_file[i]);
+	if (job_files > 0) {
+		for (i = 0; i < job_files; i++) {
+			if (fill_def_thread())
+				return 1;
+			if (nr_clients) {
+				if (fio_clients_send_ini(ini_file[i]))
+					return 1;
+				free(ini_file[i]);
+			} else if (!is_backend) {
+				if (parse_jobs_ini(ini_file[i], 0, i))
+					return 1;
+				free(ini_file[i]);
+			}
+		}
 	}
 
 	free(ini_file);
@@ -1281,9 +1450,13 @@ int parse_options(int argc, char *argv[])
 			return 0;
 		if (exec_profile)
 			return 0;
+		if (is_backend || nr_clients)
+			return 0;
 
-		log_err("No jobs(s) defined\n\n");
-		usage(argv[0]);
+		if (job_files > 0) {
+			log_err("No jobs(s) defined\n\n");
+			usage(argv[0]);
+		}
 		return 1;
 	}