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 22:08:32 2026 Auto Mode Machine = Linux oleg421-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-oleg421-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 1294 8373 634890 476959 64 8 3941 14437 576282 679917 64 16 1130 9055 727850 727850 64 32 2461 34894 831569 280553 64 64 4143 40324 969761 1562436 128 4 4261 6690 219148 390222 128 8 5387 11429 789741 643108 128 16 6933 20116 985435 225310 128 32 4484 41438 814915 1017175 128 64 4803 79609 643108 688467 128 128 6479 74671 726674 1778862 256 4 4768 8968 406442 300531 256 8 6735 10986 592636 389629 256 16 10957 25480 421107 759469 256 32 5524 22838 913973 178161 256 64 7242 28491 562520 579209 256 128 6484 23075 1319408 1361224 256 256 8272 48884 1543163 1952947 512 4 3069 5259 408281 294264 512 8 4162 21367 544106 374530 512 16 8721 16561 904658 396302 512 32 13531 14859 565751 477663 512 64 12527 24580 841884 279300 512 128 8027 34355 412913 368932 512 256 6546 35679 1201856 382945 512 512 12031 53200 588383 201645 1024 4 3726 3114 538904 92981 1024 8 5475 7973 328416 362879 1024 16 7043 5960 190153 125893 1024 32 17203 18281 254097 181048 1024 64 15988 22576 640867 1073257 1024 128 36286 30172 671948 628212 1024 256 9197 34246 164338 809484 1024 512 16899 99862 1563053 835790 2048 4 6498 12025 158612 177486 2048 8 7106 6374 472628 385981 2048 16 21099 16057 759310 226397 2048 32 16318 31966 255077 971953 2048 64 16193 22193 1060642 752130 2048 128 48098 49775 439589 479407 2048 256 43489 34760 1588726 1488257 2048 512 28677 46572 388617 705723 4096 4 11953 11588 421397 170071 4096 8 7825 6956 396701 184660 4096 16 13577 11412 274953 251194 4096 32 27191 21441 399375 837641 4096 64 22585 27004 363604 534452 4096 128 16454 36535 803781 333908 4096 256 27887 49443 462510 218149 4096 512 43343 51137 227443 558117 8192 4 1788 6369 372872 222554 8192 8 19554 10616 281637 308027 8192 16 11815 13433 959024 243541 8192 32 27302 16962 701007 860158 8192 64 26876 32134 593106 861603 8192 128 35356 54681 614183 800855 8192 256 27273 34314 1243665 639705 8192 512 23628 82356 481001 897242 16384 4 6236 6623 174409 239981 16384 8 8344 10531 374697 291214 16384 16 17453 17792 572605 252991 16384 32 16211 20547 581138 641501 16384 64 30702 35201 1386009 687017 16384 128 27149 39932 873584 910567 16384 256 29113 32682 1060587 734050 16384 512 24994 28880 903742 602306 32768 4 5458 5280 357748 195183 32768 8 9294 10519 471096 365142 32768 16 16403 18026 373221 303370 32768 32 19379 19853