fio_getrusage(&td->ru_start);
memcpy(&td->bw_sample_time, &td->epoch, sizeof(td->epoch));
memcpy(&td->iops_sample_time, &td->epoch, sizeof(td->epoch));
fio_getrusage(&td->ru_start);
memcpy(&td->bw_sample_time, &td->epoch, sizeof(td->epoch));
memcpy(&td->iops_sample_time, &td->epoch, sizeof(td->epoch));