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 May 18 13:48:37 2026 Auto Mode Machine = Linux oleg137-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-oleg137-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 2386 8821 603489 388021 64 8 2552 3912 571375 516414 64 16 2778 32684 877797 633392 64 32 3478 33521 1183548 811459 64 64 4166 23607 217743 1087638 128 4 3503 7039 475609 465304 128 8 4590 13394 172749 213314 128 16 5110 11776 978253 592699 128 32 8667 35021 1024942 1123617 128 64 7606 44863 1165070 1206978 128 128 4512 34305 757430 753179 256 4 3821 6696 599585 312515 256 8 5959 17046 526910 643033 256 16 2880 27703 632429 291239 256 32 4119 11427 1312954 1163562 256 64 9206 50924 561343 693718 256 128 10606 41539 1471270 1619994 256 256 9006 153659 1766587 1924938 512 4 3156 4739 472721 248528 512 8 5620 9400 898225 311057 512 16 15432 8875 548134 532767 512 32 5211 18041 856319 1051242 512 64 7480 19638 1171691 426697 512 128 18299 77810 1365383 1237168 512 256 36415 130881 1145443 1550747 512 512 18888 112949 1205228 614654 1024 4 7241 9422 112490 168749 1024 8 7758 7890 195868 765890 1024 16 16832 13969 953418 929082 1024 32 9010 15511 1090423 982648 1024 64 14130 54824 844833 898941 1024 128 18841 28596 1304348 312206 1024 256 23900 15703 1414304 975285 1024 512 38945 79776 1050164 330845 2048 4 5026 4422 398294 395433 2048 8 9497 6218 283068 730635 2048 16 10600 18945 348960 314790 2048 32 28063 73696 1456709 1016463 2048 64 20865 81269 696793 284126 2048 128 35803 30605 430253 338122 2048 256 26605 35218 1630647 1377297 2048 512 32485 43515 1372675 647280 4096 4 5421 9928 247927 276867 4096 8 6378 7656 412810 296404 4096 16 10887 18335 236068 181335 4096 32 12305 18301 305556 291096 4096 64 29603 25306 825804 624114 4096 128 35281 34325 585129 705834 4096 256 29653 47889 791049 749498 4096 512 35594 31395 344577 1453112 8192 4 1714 4853 238993 200734 8192 8 6125 9823 470373 150253 8192 16 10920 14136 1415331 232635 8192 32 18451 16553 389408 374130 8192 64 19499 39272 497752 494834 8192 128 23903 30070 263087 499452 8192 256 15011 25618 775968 695051 8192 512 24734 28507 1414574 373382 16384 4 3457 4298 248373 176593 16384 8 6353 7227 466382 367452 16384 16 9923 13162 418868 282491 16384 32 14928 18044 448901 246947 16384 64 11030 29089 625798 634547 16384 128 19241 61822 1084317 573011 16384 256 22712 39688 984621 1031610 16384 512 22845 34070 652614 582024 32768 4 3802 5944 228502 270570 32768 8