td->this_io_bytes[ddir] = 0;
td->stat_io_blocks[ddir] = 0;
td->this_io_blocks[ddir] = 0;
td->this_io_bytes[ddir] = 0;
td->stat_io_blocks[ddir] = 0;
td->this_io_blocks[ddir] = 0;
td->bytes_done[ddir] = 0;
td->rate_io_issue_bytes[ddir] = 0;
td->rate_next_io_time[ddir] = 0;
td->bytes_done[ddir] = 0;
td->rate_io_issue_bytes[ddir] = 0;
td->rate_next_io_time[ddir] = 0;
memcpy(&td->start, &td->epoch, sizeof(td->epoch));
memcpy(&td->iops_sample_time, &td->epoch, sizeof(td->epoch));
memcpy(&td->bw_sample_time, &td->epoch, sizeof(td->epoch));
memcpy(&td->start, &td->epoch, sizeof(td->epoch));
memcpy(&td->iops_sample_time, &td->epoch, sizeof(td->epoch));
memcpy(&td->bw_sample_time, &td->epoch, sizeof(td->epoch));