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: Mon Sep 7 06:20:00 2026 Auto Mode Machine = Linux oleg309-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-oleg309-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 1602 9478 576282 188269 64 8 2736 24807 333540 743988 64 16 4414 23555 969761 615952 64 32 4535 38120 489126 1049372 64 64 5946 9020 1255511 1638743 128 4 4353 10141 277767 571257 128 8 6602 17427 895074 776042 128 16 5945 13357 1254941 584313 128 32 5506 62312 1440082 1067750 128 64 8134 14165 1349580 1162547 128 128 7850 91245 1487977 1802755 256 4 4106 4201 658008 629094 256 8 5240 15551 867455 468922 256 16 7235 28625 1280084 625794 256 32 13906 41084 1325925 1195962 256 64 8333 10541 1260547 1286217 256 128 5054 49297 1376935 1391207 256 256 5574 9370 1147398 2049885 512 4 4997 7123 212879 343883 512 8 9599 8439 199380 460852 512 16 10122 16511 993834 495633 512 32 8821 28004 1084694 256268 512 64 20522 69500 984720 1158418 512 128 17361 38047 1296159 1326585 512 256 26100 73101 1198502 655558 512 512 16399 56307 982917 741072 1024 4 4438 5633 252766 319689 1024 8 17493 7440 347579 174303 1024 16 10273 15998 727737 784067 1024 32 25013 23520 961529 535879 1024 64 14304 42091 1021928 761950 1024 128 21442 41900 562035 705735 1024 256 18376 86662 1001903 1590254 1024 512 22285 40453 834491 944612 2048 4 7617 8687 296288 232230 2048 8 12517 8088 289264 888876 2048 16 14063 13175 341103 999898 2048 32 16710 18430 1271112 515732 2048 64 21393 34102 536944 430706 2048 128 42984 92602 616835 1403628 2048 256 29502 75986 986010 442716 2048 512 37567 84565 331980 325909 4096 4 6642 11927 252182 252060 4096 8 16663 16640 619858 634041 4096 16 13406 17976 309832 534718 4096 32 24587 25591 387730 591475 4096 64 33166 29654 1721635 633760 4096 128 41501 49613 536203 751433 4096 256 26610 43502 540590 295142 4096 512 50322 88124 475004 1129600 8192 4 7130 8366 195318 263045 8192 8 10376 10036 322609 402811 8192 16 20435 17331 390208 411716 8192 32 34912 25141 943021 928370 8192 64 20935 26689 890037 728828 8192 128 23068 34373 437114 538310 8192 256 45343 49459 1038001 875121 8192 512 45810 55106 959131 813098 16384 4 7872 10138 430344 212831 16384 8 12052 14147 769347 305603 16384 16 15532 15773 332440 541009 16384 32 18465 33098 733001 492722 16384 64 27384 31613 669801 727014 16384 128 19695 31037 1376569 332481 16384 256 21359 57483 859597 1027783 16384 512 26408 32613 492472 358567 32768 4 4077 6751 203382 159733 32768 8 8552 10726 280656 191509 32768 16 13307 17479 392486 384709 32768 32 16493 19447 501454 486373 32768 64 19940 26792 520251 643507 32768 128