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: Wed Aug 19 01:10:10 2026 Auto Mode Machine = Linux oleg404-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-oleg404-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 3186 7682 551422 378715 64 8 2085 16310 100658 771797 64 16 4087 44942 1049372 877797 64 32 3244 14250 1124074 983980 64 64 3814 62677 1780008 1638743 128 4 6353 10048 603357 259633 128 8 9570 16601 649331 335794 128 16 9276 51902 703810 940549 128 32 6990 22731 1067750 259633 128 64 3553 21011 1196221 274080 128 128 3562 63967 1436229 1827299 256 4 3541 12855 540164 202180 256 8 8912 14137 413644 673696 256 16 9232 23456 721210 833776 256 32 6638 17208 144634 901693 256 64 5849 24772 1062263 992545 256 128 4934 47546 1405778 999940 256 256 12032 42460 744204 1814348 512 4 5769 5883 66692 215485 512 8 5929 8288 668413 241295 512 16 13790 17558 810124 248672 512 32 15902 62585 766464 890404 512 64 12756 34042 555938 562049 512 128 26454 66700 1429934 1225169 512 256 14322 48224 808599 1004057 512 512 21917 101565 1570020 2063289 1024 4 11080 7308 253602 340308 1024 8 15457 4837 447168 172948 1024 16 6900 32767 1046071 480539 1024 32 26566 19401 536682 407654 1024 64 7854 16048 1256277 543817 1024 128 14273 53023 1361836 1056623 1024 256 23464 18438 1376236 1010864 1024 512 25206 31432 1115342 186763 2048 4 3643 4232 136961 368006 2048 8 8443 13764 791640 316052 2048 16 13602 9869 424030 462102 2048 32 19343 25600 141096 882756 2048 64 20780 20865 275788 343448 2048 128 11496 56483 281086 703758 2048 256 26520 24612 892015 1039590 2048 512 13052 35547 228548 1386635 4096 4 4563 3785 132488 223179 4096 8 4367 7083 199552 204656 4096 16 8717 8991 255585 336980 4096 32 18241 44571 820009 619679 4096 64 16652 30406 529820 315465 4096 128 35434 33382 785264 488261 4096 256 26721 24171 548023 510336 4096 512 40966 32526 802354 852268 8192 4 4691 6244 373740 337605 8192 8 8394 10478 449095 407623 8192 16 14005 16658 454206 305523 8192 32 12790 37978 469024 563877 8192 64 22777 23616 478222 378733 8192 128 27246 30969 471069 471502 8192 256 25431 50836 997820 714401 8192 512 36685 33176 624486 523913 16384 4 5022 4342 246479 255740 16384 8 7494 9834 259915 396920 16384 16 10763 12428 360738 273778 16384 32 16390 29296 1006748 733032 16384 64 19037 27987 488738 342017 16384 128 25316 44260 654416 634278 16384 256 30953 45416 970561 744290 16384 512 32746 49786 880479 407135 32768 4