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: Fri Sep 4 21:11:36 2026 Auto Mode Machine = Linux oleg315-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-oleg315-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 2780 3881 610350 576282 64 8 4624 17728 866463 645579 64 16 4445 17075 1017549 789967 64 32 1317 53464 1232453 1087638 64 64 4208 61303 1484662 1648808 128 4 5729 12052 597981 597981 128 8 5217 11867 921183 761728 128 16 7869 18018 419494 185780 128 32 2920 15667 1269781 1142750 128 64 3806 17075 1123617 1015251 128 128 7396 52246 1561553 1911894 256 4 2919 2483 542347 145438 256 8 5951 7952 513063 255239 256 16 5922 12416 775933 725106 256 32 6439 34900 847597 275544 256 64 4944 22725 1066483 1213534 256 128 7273 59759 1049800 944525 256 256 6347 39311 1523457 1740810 512 4 2905 3006 561462 75050 512 8 9215 6608 625212 520248 512 16 12207 20591 1264113 1066910 512 32 8347 13118 1422357 1193838 512 64 16465 24404 1450212 1221684 512 128 17925 41660 1434711 1476130 512 256 14813 24290 1282994 596058 512 512 22415 89710 1333173 875164 1024 4 7204 6077 286755 366909 1024 8 9862 11122 477653 792019 1024 16 10428 10315 375243 220256 1024 32 8764 32309 851195 856115 1024 64 27692 62721 625468 683062 1024 128 34014 50041 1233545 269178 1024 256 24572 29293 1528019 762491 1024 512 12555 47151 115224 504945 2048 4 3204 4648 626097 360560 2048 8 13898 6567 654082 411241 2048 16 10990 13489 354080 527157 2048 32 33218 31293 507925 364926 2048 64 31442 32451 535839 1242791 2048 128 33372 56613 860817 346231 2048 256 25503 52528 1735408 1541955 2048 512 19292 59616 1735759 1626633 4096 4 6001 5585 165027 270451 4096 8 11972 8245 548845 449419 4096 16 18314 12318 747704 380913 4096 32 31788 44571 421221 511552 4096 64 29115 44042 704994 485707 4096 128 19621 42096 621922 398754 4096 256 31725 33451 1687642 1468640 4096 512 45376 37942 379751 938800 8192 4 5372 2079 240199 153967 8192 8 9123 9979 455368 466275 8192 16 14314 24946 467607 775180 8192 32 20949 19359 831676 798194 8192 64 26994 39056 1091519 794411 8192 128 29122 53153 858075 619431 8192 256 30453 41224 872965 679599 8192 512 46592 38252 868441 451301 16384 4 7737 6926 254563 246486 16384 8 9271 15943 412653 846280 16384 16 18597 21937 591930 653166 16384 32 19953 28871 741224 635703 16384 64 25216 28117 595201 616446 16384 128 22257 62682 525495 993518 16384 256 31824 41748 468330 466822 16384 512 31922 53099 676547 927591 32768 4 3798 6232 182979 128248 32768 8 8992 9368 520241 384668 32768 16 14090 20691 546479 395256 32768 32 21731 19792 736492 960125 32768 64