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 Jul 4 01:17:13 2026 Auto Mode Machine = Linux oleg308-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-oleg308-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 2936 12613 592827 591520 64 8 7006 6117 383038 621657 64 16 5616 27244 1002351 866463 64 32 2599 20505 1226821 1163036 64 64 5202 41159 1609270 440921 128 4 4716 6378 586868 540217 128 8 11140 13760 677178 568836 128 16 10417 19862 692017 976473 128 32 9513 13319 1359835 1185654 128 64 10179 21015 1436229 1349580 128 128 7023 101185 1436229 1243315 256 4 5045 7825 597916 576720 256 8 11664 19980 1023775 1256123 256 16 8914 13657 833776 625794 256 32 8701 21085 489442 45894 256 64 9889 54828 1347557 1280084 256 128 16878 80733 1534342 1031644 256 256 10814 83495 1814348 2030503 512 4 3240 8847 635198 392966 512 8 5407 14590 143732 444907 512 16 10588 33833 163995 924123 512 32 20921 24130 1073309 554646 512 64 24210 102296 52620 485328 512 128 33094 49703 973559 884536 512 256 42899 106464 601063 273536 512 512 16466 166280 1630828 1875849 1024 4 5134 8230 549031 123536 1024 8 5862 8001 420218 796868 1024 16 15173 24880 534744 476699 1024 32 14675 40310 514071 490920 1024 64 15426 25292 1434617 1226500 1024 128 33495 65131 1217806 872286 1024 256 21507 74111 1095150 1429841 1024 512 32865 116074 1648862 167871 2048 4 5725 5537 219484 180902 2048 8 13284 9027 363305 408697 2048 16 15084 23418 404102 558048 2048 32 15674 32553 1339497 866287 2048 64 17957 42889 826129 1298788 2048 128 27511 78642 859439 1408461 2048 256 25191 33509 361836 327001 2048 512 27738 57196 791932 228262 4096 4 5084 6556 435696 334259 4096 8 10749 13414 230346 252230 4096 16 17377 21241 972713 553140 4096 32 17211 30360 524387 642218 4096 64 28354 32338 492785 611148 4096 128 42424 50366 810302 569514 4096 256 27648 38858 784834 1168952 4096 512 33977 65263 647495 378596 8192 4 5313 7398 391061 362927 8192 8 14731 13574 345244 329764 8192 16 13416 22206 749708 681135 8192 32 14056 24120 895209 435999 8192 64 24971 38250 1089512 1109280 8192 128 33898 44792 1281419 975607 8192 256 33073 58280 616165 751495 8192 512 30161 79030 943021 541620 16384 4 6339 5375 200847 214372 16384 8 9021 11168 388044 258610 16384 16 17735 19614 598326 816012 16384 32 20208 28738 565821 508186 16384 64 27262 39429 563026 519893 16384 128 36603 52778 696861 492130 16384 256 42245 67067 676127 626946 16384 512 47077 67195 588443 1182539 32768 4 6309 7269 295223 267970 32768 8 11735 13751 666122 483560 32768 16 18555 21949 632625 443986 32768 32 25617 40812 844313 665300 32768 64 32559 39968 1077041 502021 32768 128