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: Thu May 28 09:39:35 2026 Auto Mode Machine = Linux oleg360-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-oleg360-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 1739 3012 144490 120981 64 8 2970 17099 236131 235303 64 16 4422 28802 484710 108686 64 32 2977 16460 639427 238862 64 64 4253 44695 703068 266885 128 4 2258 2716 85328 136893 128 8 5937 8918 227699 236111 128 16 2943 18943 442668 395104 128 32 4278 31310 604036 265015 128 64 8746 33212 597981 955616 128 128 10739 24638 684081 35613 256 4 4315 3841 56749 20841 256 8 7276 7277 291555 235067 256 16 7748 8001 300784 18894 256 32 6681 24035 622890 525878 256 64 8384 62376 610842 759469 256 128 14950 40390 1206714 1036624 256 256 15956 78871 1398455 651223 512 4 4020 4920 43111 44138 512 8 9134 10640 168856 102193 512 16 7443 13416 81461 83511 512 32 13938 17161 391176 151169 512 64 12454 44444 445924 277352 512 128 21628 35704 1233614 429170 512 256 14025 69705 1336492 1312798 512 512 25698 98822 528311 1496706 1024 4 4375 4214 38451 42105 1024 8 8555 9338 135237 83231 1024 16 7467 14839 296024 165593 1024 32 14625 20871 68385 364017 1024 64 13584 26267 247751 301532 1024 128 14510 39345 843505 242027 1024 256 12010 22293 580494 862823 1024 512 39811 69381 1537868 178549 2048 4 3904 2305 26494 23063 2048 8 4504 6201 79134 95487 2048 16 6877 13304 70283 202952 2048 32 13709 23483 106131 618880 2048 64 16099 26282 920402 245414 2048 128 22644 25342 1238848 315032 2048 256 19886 43658 253908 180011 2048 512 31057 54294 1549185 541787 4096 4 4327 2887 27689 40610 4096 8 6543 6019 100313 116728 4096 16 15755 8327 118628 189586 4096 32 20385 14749 201663 266285 4096 64 1290 29454 336676 805968 4096 128 31423 18740 234176 494985 4096 256 29246 28944 1403147 583717 4096 512 18505 36109 993239 546419 8192 4 3945 6520 28076 32342 8192 8 7316 7138 84861 71241 8192 16 19174 10350 389854 79467 8192 32 14569 20179 384110 315635 8192 64 16396 25119 499968 420535 8192 128 28612 34052 407604 391832 8192 256 26663 50893 636364 702095 8192 512 27749 41482 515410 428405 16384 4 4730 6493 48568 44195 16384 8 8882 10885 86550 116797 16384 16 10641 12567 149881 136780 16384 32 15994 21980 269225 192771 16384 64 19895 26424 702180 514187 16384 128 21731 34420 410339 390485 16384 256 33987 40386 979973 599841 16384 512 29705 39349 1094454 789971 32768 4 3965 5229 47265 45765 32768 8