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: Tue Sep 15 10:05:13 2026 Auto Mode Machine = Linux oleg652-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-oleg652-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 3328 12436 703068 566551 64 8 4335 11924 852702 718114 64 16 5487 36261 1083249 801764 64 32 4072 43332 1392258 852702 64 64 6903 52125 1518251 1562436 128 4 4792 10814 225027 473930 128 8 6279 13601 1622919 633995 128 16 8776 27711 1165070 877518 128 32 5799 23050 613002 976473 128 64 7487 42653 864797 1455701 128 128 7929 75109 1584598 1749872 256 4 5967 11778 400678 600928 256 8 7667 19576 996229 226968 256 16 8936 29300 241463 980760 256 32 11564 31364 1012194 1049800 256 64 21550 31488 1235882 958864 256 128 19278 21794 1552085 639967 256 256 10118 94189 1579483 2170027 512 4 7843 10358 550523 619799 512 8 9329 12824 882718 826971 512 16 16967 17698 687237 764281 512 32 20881 19734 773643 1150968 512 64 21478 49766 887094 1340664 512 128 13808 76325 1624659 634448 512 256 28111 67351 1718254 448344 512 512 23664 69860 1803387 1230786 1024 4 6995 12719 405078 612446 1024 8 12650 15690 662312 802526 1024 16 18269 23245 1148139 676393 1024 32 27660 45981 1209234 1133893 1024 64 22511 31560 990352 827099 1024 128 31460 84065 919140 669644 1024 256 38470 52202 2124322 1554004 1024 512 38401 90885 1242467 1200447 2048 4 7710 9301 187993 298325 2048 8 8455 20009 603615 796854 2048 16 21177 15529 1180940 633485 2048 32 30577 27104 467357 821861 2048 64 24973 34913 1542232 564317 2048 128 31445 42603 748786 270866 2048 256 32784 58886 704046 1026055 2048 512 43687 57591 473749 754840 4096 4 7258 8384 357015 285077 4096 8 15628 15299 419678 640901 4096 16 20644 26878 464876 510655 4096 32 29611 40649 895073 589445 4096 64 37187 39128 959886 569439 4096 128 54297 56361 644024 926697 4096 256 26622 40655 1394605 1217238 4096 512 43750 68782 836784 852480 8192 4 9107 10735 463401 307368 8192 8 14044 13798 392840 298150 8192 16 17749 23015 824057 572225 8192 32 22054 34581 603460 898932 8192 64 34610 40811 1003063 580001 8192 128 28766 32121 983651 883697 8192 256 31055 41587 943331 805738 8192 512 49583 58066 1098112 1070570 16384 4 9029 3831 463532 457182 16384 8 15261 15731 353430 374542 16384 16 23287 27871 551760 579961 16384 32 23810 32805 580926 655308 16384 64 26388 47154 574314 583269 16384 128 35109 57251 1133689 926752 16384 256 39633 60192 902946 973780 16384 512 46701 64581 893832 706730 32768 4 13055 9653 402154 280418 32768 8 12453 14734 493843 372617 32768 16 23728 29911 734791 749550 32768 32 33138 43533 955699 828580 32768 64 42790 53324 949217 723161 32768 128 49130 62736 845539 747613 32768 256 50267 62821 1155757 733920 32768 512 57192 98426 1135767 926901 65536 4 11774 12604 666219 470658 65536 8 18786 20868 810947 759818 65536 16 29348 34083 1003754 770821 65536 32