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 16:44:29 2026 Auto Mode Machine = Linux oleg104-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-oleg104-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 1813 13074 695778 524487 64 8 3256 21483 901377 695778 64 16 5917 33471 328238 418250 64 32 5917 58345 1279447 1232453 64 64 7020 90145 1638743 1638743 128 4 3545 7787 482881 540217 128 8 6325 20473 836500 727658 128 16 5065 15138 976473 1024942 128 32 11158 40415 2098744 1162547 128 64 9686 55652 1133103 1278855 128 128 7439 96545 1471662 1997245 256 4 4081 10401 658411 533190 256 8 10143 33866 861885 1219045 256 16 7778 9469 523315 479390 256 32 14357 44047 414283 1103757 256 64 7133 11471 1400278 1254656 256 128 9198 71407 1610276 1123389 256 256 14286 69869 1729594 2097948 512 4 9059 4525 591299 504956 512 8 14219 19530 341803 179648 512 16 18595 15913 951980 610287 512 32 15674 27565 770037 906185 512 64 20640 17257 349707 623578 512 128 9200 52588 1322500 420349 512 256 25684 42237 869494 1655979 512 512 15761 76740 1842059 2135087 1024 4 8586 6038 75472 334217 1024 8 13377 19247 899129 535011 1024 16 9509 18303 493515 1004011 1024 32 17338 23655 321700 505182 1024 64 15778 23993 1431748 1338494 1024 128 19024 64605 1514549 89549 1024 256 49694 81244 1094034 1190795 1024 512 24532 48473 611661 1670669 2048 4 8303 11334 595662 298025 2048 8 9526 8543 181494 345187 2048 16 10358 25038 564206 375782 2048 32 8619 15259 260855 1739978 2048 64 67121 51684 702319 819821 2048 128 16600 70818 1571864 690242 2048 256 24791 40718 1582579 1402711 2048 512 23436 56988 256770 462202 4096 4 4218 5352 230866 158067 4096 8 7043 9236 147555 128369 4096 16 7879 9126 389506 489485 4096 32 13548 15469 657783 574389 4096 64 14483 25137 665143 373615 4096 128 13691 30128 730908 324744 4096 256 23714 29557 381344 463609 4096 512 28328 37362 442907 337119 8192 4 3654 1962 325078 335106 8192 8 12113 9751 533993 479457 8192 16 21316 17628 591310 307541 8192 32 27486 28749 903590 771075 8192 64 31041 35568 894230 547079 8192 128 34194 27905 691596 738350 8192 256 34662 31937 740163 487449 8192 512 22743 39825 698442 1035125 16384 4 5372 4824 227701 203714 16384 8 8836 8413 234505 350797 16384 16 11544 17039 286183 242273 16384 32 13323 27628 794795 667588 16384 64 20271 35481 931274 829566 16384 128 21571 25250 1017014 469360 16384 256 25372 43158 1152183 811972 16384 512 35137 47859 963647 931488 32768 4 5953 6479 216542 203238 32768 8 9682 8577 338508 204207 32768 16 13723 16460 429828 316923 32768 32