(double)total_written, (double)total_read,
(total_written + total_read)/(0.5 + (t - starttime)));
rprintf(FINFO, "total size is %.0f speedup is %.2f\n",
(double)total_written, (double)total_read,
(total_written + total_read)/(0.5 + (t - starttime)));
rprintf(FINFO, "total size is %.0f speedup is %.2f\n",