o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
}
+
+static unsigned long long get_rand_start_delay(struct thread_data *td)
+{
+ unsigned long long delayrange;
+ unsigned long r;
+
+ delayrange = td->o.start_delay_high - td->o.start_delay;
+
+ if (td->o.use_os_rand) {
+ r = os_random_long(&td->delay_state);
+ delayrange = (unsigned long long) ((double) delayrange * (r / (OS_RAND_MAX + 1.0)));
+ } else {
+ r = __rand(&td->__delay_state);
+ delayrange = (unsigned long long) ((double) delayrange * (r / (FRAND_MAX + 1.0)));
+ }
+
+ delayrange += td->o.start_delay;
+ return delayrange;
+}
+
/*
* Lazy way of fixing up options that depend on each other. We could also
* define option callback handlers, but this is easier.
if (!o->file_size_high)
o->file_size_high = o->file_size_low;
+ if (o->start_delay_high)
+ o->start_delay = get_rand_start_delay(td);
+
if (o->norandommap && o->verify != VERIFY_NONE
&& !fixed_block_size(o)) {
log_err("fio: norandommap given for variable block sizes, "
os_random_seed(td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], &td->file_size_state);
os_random_seed(td->rand_seeds[FIO_RAND_TRIM_OFF], &td->trim_state);
+ os_random_seed(td->rand_seeds[FIO_RAND_START_DELAY], &td->delay_state);
if (!td_random(td))
return;
init_rand_seed(&td->__file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF]);
init_rand_seed(&td->__trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF]);
+ init_rand_seed(&td->__delay_state, td->rand_seeds[FIO_RAND_START_DELAY]);
if (!td_random(td))
return;
void td_fill_rand_seeds(struct thread_data *td)
{
+ if (td->o.allrand_repeatable) {
+ for (int i = 0; i < FIO_RAND_NR_OFFS; i++)
+ td->rand_seeds[i] = FIO_RANDSEED * td->thread_number
+ + i;
+ }
+
if (td->o.use_os_rand)
td_fill_rand_seeds_os(td);
else