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: Fri Sep 11 06:55:35 2026 Auto Mode Machine = Linux oleg355-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-oleg355-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 2512 13391 576282 516414 64 8 3546 9882 598110 450541 64 16 9307 50233 1163036 481234 64 32 5184 43325 1279447 1066042 64 64 5387 35026 1484662 1392258 128 4 5055 4676 497653 193899 128 8 9396 16588 185012 819893 128 16 8444 41314 1007629 895074 128 32 6250 60405 1332828 1254941 128 64 15666 41250 826202 992724 128 128 10246 75596 811221 1642783 256 4 5366 10626 153198 338100 256 8 8634 20152 366239 780445 256 16 7648 16513 260692 1112909 256 32 14948 25581 1540948 656399 256 64 22699 53401 1325925 812944 256 128 8208 52096 1224606 1327564 256 256 9823 42298 924200 1334162 512 4 6353 6119 353564 344988 512 8 15514 14461 563820 375381 512 16 16869 38811 816594 476709 512 32 17560 38764 899731 1207261 512 64 25427 85605 1026126 704137 512 128 21111 56769 967855 644733 512 256 41898 114956 1599251 1289156 512 512 27677 32302 949875 1361057 1024 4 5937 5624 542992 106944 1024 8 11153 11777 323762 431533 1024 16 14046 29294 781072 526485 1024 32 13908 21901 821719 396734 1024 64 27431 53750 500007 725770 1024 128 45710 85317 1667426 1385560 1024 256 46607 97728 1640674 1503415 1024 512 26406 60786 121269 1067920 2048 4 5064 6292 268202 342013 2048 8 7050 8182 966050 225027 2048 16 19556 30110 392632 538256 2048 32 14661 25301 211700 253145 2048 64 27275 44335 534007 1015862 2048 128 19806 31950 1675821 381812 2048 256 29516 41616 1464907 1293702 2048 512 31960 75826 622287 641001 4096 4 5999 8020 285717 215977 4096 8 10097 17095 600237 237216 4096 16 16931 22060 485309 361675 4096 32 17464 25108 639398 534452 4096 64 28200 39127 1143129 543154 4096 128 33681 49738 527899 298003 4096 256 28545 52405 1236690 1472290 4096 512 1622 41443 1833535 691070 8192 4 7098 7062 380688 374387 8192 8 10543 12284 474098 425229 8192 16 19981 28936 709196 398485 8192 32 29215 32786 874654 697492 8192 64 30602 47609 838844 377526 8192 128 39161 57811 864682 610570 8192 256 44856 50468 942245 428924 8192 512 35020 50085 919845 734499 16384 4 8386 8866 435672 247398 16384 8 12281 14282 595820 413592 16384 16 13563 22679 708376 374440 16384 32 23119 32371 936490 794262 16384 64 26175 38292 1041775 910471 16384 128 30692 54179 971838 401746 16384 256 41050 57801 759677 692186 16384 512 47289 64786 670762 478952 32768 4 6731 7093 371903 360468 32768 8 12236 14124 562947 493880 32768 16 19021 22749 310511 426327 32768 32 25840 37311 747463 911079 32768 64 33039 31864 429389 348473 32768 128 34142 41218 884142 998170 32768 256 54035 56796 696140 598654 32768 512