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: Tue Sep 15 01:04:36 2026 Auto Mode Machine = Linux oleg114-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-oleg114-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 10940 524487 528618 64 8 1676 26004 571375 117435 64 16 1242 14440 1049372 998622 64 32 4142 38508 1163036 889431 64 64 4406 59974 1304314 1722886 128 4 4313 3193 239695 553586 128 8 3700 14573 831319 691126 128 16 7677 25015 1114289 711270 128 32 7094 37036 1377278 460514 128 64 8491 65746 1142750 1196221 128 128 7605 86608 1471662 2098744 256 4 6632 7556 527947 312970 256 8 8211 19051 833776 452329 256 16 11194 24736 1075025 1036624 256 32 5140 32056 1093639 1112909 256 64 7731 20560 1398455 388501 256 128 7359 32417 1147398 1076103 256 256 13374 31651 1126926 1868008 512 4 6011 7821 531712 445184 512 8 10434 18983 133261 705062 512 16 8783 31387 649806 984268 512 32 23854 27454 853257 712076 512 64 17777 50970 1115109 664895 512 128 17942 32932 1042566 835334 512 256 17983 66440 1354190 531186 512 512 23920 79788 837942 910797 1024 4 2881 4744 569563 305304 1024 8 6771 7025 120897 186617 1024 16 18998 35193 798795 825668 1024 32 7604 14223 914249 852039 1024 64 14445 48238 1139005 688207 1024 128 15340 20495 310020 147063 1024 256 28190 75194 1092921 1316341 1024 512 26166 68604 1466957 230678 2048 4 4332 5355 196225 116568 2048 8 9142 10124 221957 300601 2048 16 11647 16285 325230 248970 2048 32 25171 30659 1158327 623235 2048 64 12533 91801 231779 295229 2048 128 38334 33642 1591375 1422220 2048 256 20052 60868 1699696 1462911 2048 512 46344 80106 360183 639426 4096 4 9744 10164 263693 323667 4096 8 22916 27956 533257 494928 4096 16 15924 14885 373647 463921 4096 32 11918 20240 225266 549724 4096 64 44277 46264 432113 453943 4096 128 50525 61849 924404 1463386 4096 256 16522 48480 1827877 1055676 4096 512 23093 44821 1710834 1015130 8192 4 7419 7393 291374 340256 8192 8 2431 16427 391030 601559 8192 16 10143 10106 382805 213021 8192 32 10272 23758 392656 418297 8192 64 16629 45555 1311550 758663 8192 128 22143 26923 983313 462951 8192 256 19500 35697 509578 361647 8192 512 22377 31507 542115 408661 16384 4 4303 5412 720905 429462 16384 8 10629 9093 299168 295037 16384 16 14522 17357 552190 567349 16384 32 20819 19013 555727 425381 16384 64 16960 22811 837023 347596 16384 128 18067 33121 554190 280201 16384 256 24144 35394 1157306 804444 16384 512 34207 44270 1028368 847156 32768 4 5888 5329 235476 308108 32768 8 9012 11967 350137 430959 32768 16 10591 13548 215713 253147 32768 32