}
#endif
+static int str_random_distribution_cb(void *data, const char *str)
+{
+ struct thread_data *td = data;
+ double val;
+ char *nr;
+
+ 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 && !str_to_float(nr, &val)) {
+ log_err("fio: random postfix parsing failed\n");
+ free(nr);
+ return 1;
+ }
+
+ 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;
+}
+
static int check_dir(struct thread_data *td, char *fname)
{
#if 0
.parent = "norandommap",
.def = "0",
},
+ {
+ .name = "random_distribution",
+ .type = FIO_OPT_STR,
+ .off1 = td_var_offset(random_distribution),
+ .cb = str_random_distribution_cb,
+ .help = "Random offset distribution generator",
+ .def = "random",
+ .posval = {
+ { .ival = "random",
+ .oval = FIO_RAND_DIST_RANDOM,
+ .help = "Completely random",
+ },
+ { .ival = "zipf",
+ .oval = FIO_RAND_DIST_ZIPF,
+ .help = "Zipf distribution",
+ },
+ { .ival = "pareto",
+ .oval = FIO_RAND_DIST_PARETO,
+ .help = "Pareto distribution",
+ },
+ },
+ },
{
.name = "nrfiles",
.alias = "nr_files",
.def = "1000",
.parent = "rate",
},
+ {
+ .name = "max_latency",
+ .type = FIO_OPT_INT,
+ .off1 = td_var_offset(max_latency),
+ .help = "Maximum tolerated IO latency (usec)",
+ },
{
.name = "invalidate",
.type = FIO_OPT_BOOL,