return 0;
}
+static int str_steadystate_cb(void *data, const char *str)
+{
+ struct thread_data *td = data;
+ double val;
+ char *nr;
+ char *pct;
+ long long ll;
+
+ if (td->o.ss != FIO_STEADYSTATE_IOPS &&
+ td->o.ss != FIO_STEADYSTATE_IOPS_SLOPE &&
+ td->o.ss != FIO_STEADYSTATE_BW &&
+ td->o.ss != FIO_STEADYSTATE_BW_SLOPE) {
+ /* should be impossible to get here */
+ log_err("fio: unknown steady state criterion\n");
+ return 1;
+ }
+
+ nr = get_opt_postfix(str);
+ if (!nr) {
+ log_err("fio: steadystate threshold must be specified in addition to criterion\n");
+ free(nr);
+ return 1;
+ }
+
+ /* ENHANCEMENT Allow fio to understand size=10.2% and use here */
+ pct = strstr(nr, "%");
+ if (pct) {
+ *pct = '\0';
+ strip_blank_end(nr);
+ if (!str_to_float(nr, &val, 0)) {
+ log_err("fio: could not parse steadystate threshold percentage\n");
+ free(nr);
+ return 1;
+ }
+
+ dprint(FD_PARSE, "set steady state threshold to %f%%\n", val);
+ free(nr);
+ if (parse_dryrun())
+ return 0;
+
+ td->o.ss_pct = true;
+ td->o.ss_limit.u.f = val;
+
+
+ } else if (td->o.ss == FIO_STEADYSTATE_IOPS ||
+ td->o.ss == FIO_STEADYSTATE_IOPS_SLOPE) {
+ if (!str_to_float(nr, &val, 0)) {
+ log_err("fio: steadystate IOPS threshold postfix parsing failed\n");
+ free(nr);
+ return 1;
+ }
+
+ dprint(FD_PARSE, "set steady state IOPS threshold to %f\n", val);
+ free(nr);
+ if (parse_dryrun())
+ return 0;
+
+ td->o.ss_pct = false;
+ td->o.ss_limit.u.f = val;
+
+ } else { /* bandwidth criterion */
+ if (str_to_decimal(nr, &ll, 1, td, 0, 0)) {
+ log_err("fio: steadystate BW threshold postfix parsing failed\n");
+ free(nr);
+ return 1;
+ }
+
+ dprint(FD_PARSE, "set steady state BW threshold to %lld\n", ll);
+ free(nr);
+ if (parse_dryrun())
+ return 0;
+
+ td->o.ss_pct = false;
+ td->o.ss_limit.u.f = (double) ll;
+
+ }
+
+ return 0;
+}
+
/*
* Return next name in the string. Files are separated with ':'. If the ':'
* is escaped with a '\', then that ':' is part of the filename and does not
.category = FIO_OPT_C_IO,
.group = FIO_OPT_G_MTD,
},
+ {
+ .name = "steadystate",
+ .lname = "Steady state threshold",
+ .alias = "ss",
+ .type = FIO_OPT_STR,
+ .off1 = offsetof(struct thread_options, ss),
+ .cb = str_steadystate_cb,
+ .help = "Define the criterion and limit to judge when a job has reached steady state",
+ .def = "iops_slope:0.01%",
+ .posval = {
+ { .ival = "iops",
+ .oval = FIO_STEADYSTATE_IOPS,
+ .help = "maximum mean deviation of IOPS measurements",
+ },
+ { .ival = "iops_slope",
+ .oval = FIO_STEADYSTATE_IOPS_SLOPE,
+ .help = "slope calculated from IOPS measurements",
+ },
+ { .ival = "bw",
+ .oval = FIO_STEADYSTATE_BW,
+ .help = "maximum mean deviation of bandwidth measurements",
+ },
+ {
+ .ival = "bw_slope",
+ .oval = FIO_STEADYSTATE_BW_SLOPE,
+ .help = "slope calculated from bandwidth measurements",
+ },
+ },
+ .category = FIO_OPT_C_GENERAL,
+ .group = FIO_OPT_G_RUNTIME,
+ },
+ {
+ .name = "steadystate_duration",
+ .lname = "Steady state duration",
+ .alias = "ss_dur",
+ .type = FIO_OPT_STR_VAL_TIME,
+ .off1 = offsetof(struct thread_options, ss_dur),
+ .help = "Stop workload upon attaining steady state for specified duration",
+ .def = "0",
+ .is_seconds = 1,
+ .is_time = 1,
+ .category = FIO_OPT_C_GENERAL,
+ .group = FIO_OPT_G_RUNTIME,
+ },
+ {
+ .name = "steadystate_ramp_time",
+ .lname = "Steady state ramp time",
+ .alias = "ss_ramp",
+ .type = FIO_OPT_STR_VAL_TIME,
+ .off1 = offsetof(struct thread_options, ss_ramp_time),
+ .help = "Delay before initiation of data collection for steady state job termination testing",
+ .def = "0",
+ .is_seconds = 1,
+ .is_time = 1,
+ .category = FIO_OPT_C_GENERAL,
+ .group = FIO_OPT_G_RUNTIME,
+ },
{
.name = NULL,
},