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 Sep 7 06:11:56 2026 Auto Mode Machine = Linux oleg206-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-oleg206-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 2485 3575 400168 495445 64 8 3100 14682 546928 720041 64 16 2622 12908 942521 752329 64 32 4973 29479 1124074 821391 64 64 5445 62809 1421755 1421755 128 4 7467 9607 612303 415597 128 8 4605 11344 757430 316028 128 16 7688 22180 853794 319983 128 32 3523 26054 1017175 976473 128 64 7828 49711 601330 1172704 128 128 7846 47978 1294270 985435 256 4 7330 7899 59013 488551 256 8 10178 23069 608074 361674 256 16 10187 37015 572721 828628 256 32 13692 50782 1004618 440454 256 64 19964 61039 680960 522297 256 128 22863 86134 1375171 755195 256 256 9424 56276 1089202 1907837 512 4 9523 11210 516743 223282 512 8 8287 16245 785241 451549 512 16 6912 19892 621413 579804 512 32 19066 51272 984720 393253 512 64 21472 54954 729244 717308 512 128 30710 77004 1105351 722133 512 256 29774 84278 970041 873740 512 512 23770 46305 540681 1476130 1024 4 4223 11389 183445 109109 1024 8 6320 7665 425589 407306 1024 16 21820 29772 726138 567681 1024 32 30935 29924 652254 851364 1024 64 33690 83292 505182 403631 1024 128 15100 24938 1322828 493969 1024 256 11475 53590 1432225 946485 1024 512 48819 26261 1492963 169535 2048 4 3867 5626 255069 406435 2048 8 12318 9224 524838 239055 2048 16 11788 19698 426663 443378 2048 32 14806 30850 500730 495902 2048 64 19732 32373 791640 318951 2048 128 20007 35681 684685 1160362 2048 256 27588 50661 480507 1216910 2048 512 35946 57566 800269 205644 4096 4 6183 10492 314835 245490 4096 8 9333 8341 457607 163487 4096 16 16598 15268 244550 127339 4096 32 25231 32689 766315 431787 4096 64 16950 1524 880485 521395 4096 128 29226 38374 1368935 605996 4096 256 25687 48027 514308 223008 4096 512 25164 48795 643011 408210 8192 4 6462 6082 129774 186975 8192 8 9749 11532 394926 398365 8192 16 10683 14211 567509 534068 8192 32 22211 20770 528206 744058 8192 64 24972 26794 525195 473797 8192 128 23065 31406 534933 871216 8192 256 30712 24158 341844 380616 8192 512 34386 50523 353805 376624 16384 4 4743 5446 197814 124231 16384 8 6673 6454 224509 289429 16384 16 9032 10128 460056 244998 16384 32 10432 17190 953989 537905 16384 64 17212 22527 609367 665281 16384 128 25172 40537 507496 702992 16384 256 21308 35550 436974 508913 16384 512 35672 47857 1331287 795347 32768 4 7865 5436 158593 158579 32768 8