Iozone: Performance Test of File I/O Version $Revision: 3.483 $ Compiled for 64 bit mode. Build: linux-AMD64 Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins Al Slater, Scott Rhine, Mike Wisner, Ken Goss Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR, Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner, Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, Dave Boone, Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root, Fabrice Bacchella, Zhenghua Xue, Qin Li, Darren Sawyer, Vangel Bojaxhi, Ben England, Vikentsi Lapa, Alexey Skidanov, Sudhir Kumar. Run began: Sat Sep 5 01:45:14 2026 Auto Mode Machine = Linux oleg605-client.virtnet 4.18.0rh8.10-debug #2 SMP Mon Jul 14 01 Excel chart generation enabled Excel chart generation enabled Verify Mode. Pattern dbdbdbdb Performance measurements are invalid in this mode. Using maximum file size of 102400 kilobytes. Using Maximum Record Size 512 kB Command line used: iozone -a -M -R -V 0xab -g 100M -q 512k -i0 -i1 -f /mnt/lustre/d4.lustre-rsync-test/d0.iozone-oleg605-client.virtnet/iozone-file Output is in kBytes/sec Time Resolution = 0.000001 seconds. Processor cache size set to 1024 kBytes. Processor cache line size set to 32 bytes. File stride size set to 17 * record size. random random bkwd record stride kB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread 64 4 2024 7982 695778 576282 64 8 4991 11818 901377 470274 64 16 1822 12078 1210227 347801 64 32 4035 60257 1357066 1336792 64 64 3270 76831 1392258 1734015 128 4 3367 6643 613002 538051 128 8 4888 18645 795593 369795 128 16 6833 23730 366763 859260 128 32 7963 55172 1209698 402510 128 64 5791 26901 609522 1165070 128 128 9180 98313 1487977 1349580 256 4 5480 6108 196915 460476 256 8 8234 11990 716876 817898 256 16 8339 22933 1027695 807442 256 32 15966 25887 1437779 654798 256 64 16407 42653 1298662 1267990 256 128 21237 103226 1570244 828628 256 256 15595 89108 1729594 2030503 512 4 5337 9772 614654 348741 512 8 15684 19966 639930 735740 512 16 15672 11860 488086 528962 512 32 10483 29332 1286067 257683 512 64 11889 15273 1454140 1143004 512 128 18639 44348 1158418 1015932 512 256 28747 87699 907717 1071167 512 512 23062 98122 1635797 529483 1024 4 6035 8312 208515 596788 1024 8 12471 10779 928279 313528 1024 16 15950 19386 243813 835303 1024 32 27206 46161 1542286 851870 1024 64 34779 46040 1135391 657748 1024 128 26230 76969 868581 679927 1024 256 29648 47269 1589665 1438461 1024 512 34038 80082 1718120 1565902 2048 4 6867 8429 309884 406993 2048 8 12674 12684 242915 177698 2048 16 13012 20439 389198 466215 2048 32 28388 38724 454186 729084 2048 64 21877 53398 562617 368006 2048 128 38223 43055 915985 1427182 2048 256 32123 40272 325699 1434331 2048 512 25796 47765 1738569 819509 4096 4 7569 6309 228684 306866 4096 8 12156 15421 634650 501956 4096 16 14127 18951 391324 468642 4096 32 28642 38552 520984 371016 4096 64 38148 44634 839319 315465 4096 128 34610 32697 1332826 499882 4096 256 38757 35389 1782364 826121 4096 512 25033 53019 1049228 880305 8192 4 5880 5986 185490 260021 8192 8 12206 12815 487650 221280 8192 16 25619 21683 521322 635975 8192 32 25871 24487 534583 406832 8192 64 25092 35682 446747 365386 8192 128 28235 53694 879827 833876 8192 256 35787 47782 869650 1025149 8192 512 37855 60559 989145 682325 16384 4 8132 8646 407898 413392 16384 8 13130 11461 420998 496981 16384 16 25437 18567 541009 487853 16384 32 22896 29313 1000053 600895 16384 64 26175 34680 1094977 609659 16384 128 30686 39042 995562 671562 16384 256 30828 47361 880524 948983 16384 512 33939 59114 764145 994668 32768 4 5805 6716 301990 231468 32768 8 13641 15170 700141 381884 32768 16 27612 33695 586281 402426 32768 32 23028 32278 922571 646577 32768 64 29704 36075 1194552 733360 32768 128 32502 55819 956763 801838 32768 256 32016 58396 1353600 1249015 32768 512 43192 59804 1579870 520094 65536 4