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 Aug 8 08:23:57 2026 Auto Mode Machine = Linux oleg419-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-oleg419-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 2404 13689 647135 495445 64 8 2657 18620 852702 695778 64 16 3368 32144 1083249 877797 64 32 2869 44950 1279447 1105556 64 64 4889 41210 1304314 2067979 128 4 5666 10831 650117 158799 128 8 4597 22302 831319 809997 128 16 6474 28685 1165070 864797 128 32 6104 44154 1451764 824932 128 64 8668 80000 1406136 100390 128 128 8655 41102 2326073 1827299 256 4 5424 8136 205626 621448 256 8 5754 18246 910872 273508 256 16 9588 29585 573946 385433 256 32 8674 31277 470566 490336 256 64 11684 65206 1506359 205469 256 128 12585 60289 273508 357579 256 256 9184 56914 1570244 1752173 512 4 6155 11094 220033 583110 512 8 11834 18498 876951 499089 512 16 11345 20811 317214 545904 512 32 19735 44561 1286067 832743 512 64 15685 33882 1471074 1112797 512 128 24030 80551 664895 973559 512 256 19040 65237 1368865 1652157 512 512 25350 87821 1620980 2135087 1024 4 9710 11508 344208 517977 1024 8 13876 17995 441741 947320 1024 16 18458 18681 249087 601636 1024 32 24360 55788 841357 602311 1024 64 30511 35256 805688 1056883 1024 128 36353 49280 1142641 939446 1024 256 24552 56496 1521524 224716 1024 512 26012 91649 474907 875129 2048 4 11313 13685 475506 397906 2048 8 18463 19409 488430 313537 2048 16 22737 35569 1150570 785343 2048 32 28430 56558 984090 885486 2048 64 45032 44496 877436 335848 2048 128 38628 90812 881579 477515 2048 256 37730 80345 1101583 805371 2048 512 49494 88017 1527152 947300 4096 4 10512 11929 378771 337642 4096 8 17628 17863 380003 709976 4096 16 20102 27590 544687 361105 4096 32 33217 34785 400269 931976 4096 64 43411 47091 889834 312766 4096 128 48105 69301 1000469 340311 4096 256 50312 82542 1042480 770646 4096 512 46515 69988 1091075 560942 8192 4 11756 11706 355478 224481 8192 8 14638 19501 696488 676801 8192 16 22412 27889 811964 534342 8192 32 34776 45486 837719 615194 8192 64 46710 42785 967530 1053921 8192 128 32778 52875 1059903 723228 8192 256 36004 50675 1064995 711237 8192 512 51582 68681 1204176 1013986 16384 4 11543 11744 380431 348869 16384 8 19786 4948 654235 752934 16384 16 27173 24669 810975 746117 16384 32 30490 41806 810688 628126 16384 64 40252 57374 1217139 1091689 16384 128 50404 58577 1017315 887254 16384 256 45400 66700 1275516 835527 16384 512 49051 68352 1590404 1234013 32768 4 11273 12864 457550 386528 32768 8 17922 18369 607669 562037 32768 16 25212 31332 909139 573518 32768 32 33847 42868 920550 959087 32768 64 38402 49035 1482783 1000030 32768 128 47492 46631 995257 990388 32768 256 45871 74898 1073131 884307 32768 512 49392 51253 1252978 1234476 65536 4 11204 12509 658051 518855 65536 8 19471 21478 749652 584041 65536 16 25609 33195 812818 1009786 65536 32 38513 53587 1330787 1029340 65536 64 52476 66904 1415832 1197945 65536 128