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 08:37:26 2026 Auto Mode Machine = Linux oleg337-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-oleg337-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 4686 3679 598110 420873 64 8 1497 14585 710511 340306 64 16 3349 18369 926260 515423 64 32 7498 45261 333540 621657 64 64 7555 14158 1119387 1648808 128 4 6101 3249 290230 490380 128 8 9138 21702 770474 522346 128 16 4876 12434 1076312 831319 128 32 12784 57661 1102844 780556 128 64 5563 35863 1121270 1254941 128 128 8527 77483 1455701 1172704 256 4 3667 7684 315638 345054 256 8 5712 13682 582983 495084 256 16 7691 21386 436870 581719 256 32 12819 35398 1243036 907792 256 64 8443 101865 1237306 1231629 256 128 13049 79133 1237306 131492 256 256 10343 95521 345498 74592 512 4 6383 9020 224966 104786 512 8 7003 25968 859060 465044 512 16 8210 44692 1084694 667582 512 32 30817 26820 859060 949875 512 64 16738 84780 912733 1391032 512 128 17489 19991 1523247 1248678 512 256 22730 47725 1437592 1541840 512 512 26810 63374 1753325 408592 1024 4 6267 5598 185105 187064 1024 8 8003 14481 835140 277277 1024 16 16084 29580 361839 319404 1024 32 26450 21486 1341839 299242 1024 64 32929 34855 566408 355549 1024 128 26069 51969 1294520 1074599 1024 256 19474 83509 897438 1347311 1024 512 28604 49995 1391395 354551 2048 4 6376 6153 362279 206430 2048 8 15586 9974 356727 299720 2048 16 14872 21316 634608 219788 2048 32 24935 24074 726494 426769 2048 64 30331 52581 665535 582968 2048 128 25363 42923 892757 306632 2048 256 24356 36737 1650068 885121 2048 512 45068 66597 1029621 818260 4096 4 6693 9995 408987 257608 4096 8 12467 16541 287395 371281 4096 16 21560 28028 789196 825486 4096 32 31857 25464 679266 509458 4096 64 20257 28286 1129600 838991 4096 128 62271 50537 488150 866671 4096 256 38382 44962 930059 1004153 4096 512 37721 80154 1111188 740677 8192 4 9040 13433 177615 141029 8192 8 12210 14983 389872 506490 8192 16 26091 19394 735899 642805 8192 32 25798 37015 1036186 418920 8192 64 16526 20078 553441 426978 8192 128 36831 31181 440527 431406 8192 256 28352 32285 743849 601780 8192 512 32485 59943 667155 433349 16384 4 7283 5955 349965 253351 16384 8 11684 11678 676773 557485 16384 16 15794 27817 303940 276238 16384 32 25289 34451 674184 690406 16384 64 38194 63107 958687 628724 16384 128 33614 44061 527152 552430 16384 256 42122 63534 731721 438990 16384 512 33454 52802 678290 560962 32768 4 5864 6473 425132 203999 32768 8 9679 10879 201029 245429 32768 16 15033 23730 431953 467385 32768 32 18793 33750 490664 433158 32768 64