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 26 21:01:35 2026 Auto Mode Machine = Linux oleg442-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-oleg442-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 3807 8394 598110 532815 64 8 6025 19099 780776 666414 64 16 6033 26822 799377 666414 64 32 4622 69781 1163036 1255511 64 64 5347 42896 1828508 1562436 128 4 4526 9702 579270 563463 128 8 5584 6298 429563 535368 128 16 11231 15044 640042 789741 128 32 4249 36046 859260 819893 128 64 14308 55554 706589 1057236 128 128 5211 38599 1642783 1658003 256 4 1949 3627 624339 600928 256 8 3119 4449 688381 396828 256 16 16733 37635 856386 544547 256 32 9371 44190 850282 1132871 256 64 18435 61259 782721 1071806 256 128 15015 71289 305491 1506359 256 256 7529 19488 1356067 2081678 512 4 6023 13024 470546 193924 512 8 10437 16601 710192 455476 512 16 11289 16135 890404 434994 512 32 7548 51266 1118011 1069035 512 64 18325 68816 1196499 1101383 512 128 16887 69253 797489 1242896 512 256 16205 35974 1492545 651580 512 512 22349 110038 737762 144021 1024 4 10153 10218 371414 227803 1024 8 6497 13318 182533 686776 1024 16 16021 20644 876737 653942 1024 32 17499 42450 140930 528624 1024 64 15985 44637 590470 1275301 1024 128 18828 32616 1273788 1230718 1024 256 19214 84523 1345201 259298 1024 512 38000 57044 445591 811472 2048 4 4776 7251 395834 300559 2048 8 7660 8267 195533 163996 2048 16 10494 18044 1167617 194198 2048 32 25820 34673 326578 1031724 2048 64 29110 32617 833828 1178348 2048 128 34780 47633 732691 751340 2048 256 36440 48158 517440 1399968 2048 512 16480 76369 1049113 359926 4096 4 8092 6933 365943 156431 4096 8 10377 15615 283300 411910 4096 16 1526 18362 459972 276120 4096 32 26209 28888 606359 391699 4096 64 26026 33046 631431 693637 4096 128 25245 40141 625340 369946 4096 256 28275 39403 715356 744852 4096 512 29898 32528 504432 443674 8192 4 5925 6127 208262 170096 8192 8 10618 9382 280433 188699 8192 16 14257 17199 180615 255592 8192 32 18036 24246 349917 630595 8192 64 21699 35421 720046 484418 8192 128 27589 34929 682773 832180 8192 256 46479 60735 733339 629082 8192 512 43528 57377 481688 565985 16384 4 7297 6689 258973 290697 16384 8 10278 16050 583680 416939 16384 16 16056 20353 650883 402386 16384 32 20567 28324 488245 422985 16384 64 26218 32269 515850 419200 16384 128 30320 35567 575844 531412 16384 256 35657 58765 1092123 1204890 16384 512 31716 44184 952059 546043 32768 4 6338 7375 275093 254486 32768 8 9102 11544 421192 325418 32768 16 20374 24077 755126 563256 32768 32