X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=options.c;h=ae8598825e048a783da985bf9c6d89b8fb2530a2;hb=2caefeecf95c2e01ccffc3e286d17a84b12f4dc1;hp=05a6a5081fa576810c9071506e634077ec27a401;hpb=e25839d4cb5fefcb5ffce76128a4faedb177e7af;p=fio.git

diff --git a/options.c b/options.c
index 05a6a508..ae859882 100644
--- a/options.c
+++ b/options.c
@@ -734,20 +734,36 @@ static int str_random_distribution_cb(void *data, const char *str)
 	double val;
 	char *nr;
 
-	if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
+	if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
+		val = 1.1;
+	else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
+		val = 0.2;
+	else
 		return 0;
 
 	nr = get_opt_postfix(str);
-	if (!nr)
-		val = 0.6;
-	else if (!str_to_float(nr, &val)) {
+	if (nr && !str_to_float(nr, &val)) {
 		log_err("fio: random postfix parsing failed\n");
 		free(nr);
 		return 1;
 	}
 
-	td->o.zipf_theta = val;
 	free(nr);
+
+	if (td->o.random_distribution == FIO_RAND_DIST_ZIPF) {
+		if (val == 1.00) {
+			log_err("fio: zipf theta must different than 1.0\n");
+			return 1;
+		}
+		td->o.zipf_theta = val;
+	} else {
+		if (val <= 0.00 || val >= 1.00) {
+			log_err("fio: pareto input out of range (0 < input < 1.0)\n");
+			return 1;
+		}
+		td->o.pareto_h = val;
+	}
+
 	return 0;
 }
 
@@ -1511,6 +1527,10 @@ static struct fio_option options[FIO_MAX_OPTS] = {
 			    .oval = FIO_RAND_DIST_ZIPF,
 			    .help = "Zipf distribution",
 			  },
+			  { .ival = "pareto",
+			    .oval = FIO_RAND_DIST_PARETO,
+			    .help = "Pareto distribution",
+			  },
 		},
 	},
 	{