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: Sat Sep 5 05:49:55 2026 Auto Mode Machine = Linux oleg339-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-oleg339-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 2711 4665 592827 484710 64 8 2571 10220 743988 43304 64 16 4865 31433 323102 621657 64 32 3941 25038 969761 316997 64 64 2827 40428 1484662 1143223 128 4 4257 2814 615109 581781 128 8 4526 10645 795593 529038 128 16 4913 11030 1057236 563463 128 32 14137 50956 1096089 371073 128 64 12339 42626 1102844 1217930 128 128 4522 90461 1421023 2035099 256 4 4353 5035 410796 298692 256 8 8595 10922 962301 820398 256 16 12388 22469 1169901 300111 256 32 14638 39862 1306564 985259 256 64 20519 23585 365740 1312954 256 128 22897 91852 1400278 1248819 256 256 8872 25343 329894 780445 512 4 2527 6515 180980 255750 512 8 7630 13540 506505 426697 512 16 9557 17610 390536 901241 512 32 22945 48921 1051242 765371 512 64 13029 38429 1375881 1142396 512 128 13303 42695 1394645 1112797 512 256 31090 61413 1237168 1368865 512 512 28653 98441 182271 592441 1024 4 4836 4583 274301 338618 1024 8 13254 22725 658050 525390 1024 16 10723 24436 445591 341906 1024 32 15699 41637 1223356 517415 1024 64 23985 72342 293075 1102176 1024 128 19034 37436 329904 666629 1024 256 21028 78794 997019 1121751 1024 512 39654 42796 1653942 868405 2048 4 5551 5985 288816 249418 2048 8 10517 13686 383379 371491 2048 16 13459 24748 435003 635594 2048 32 26926 18031 523782 462077 2048 64 17525 22257 739376 541924 2048 128 31930 42191 1408461 231361 2048 256 29927 30706 480184 1297807 2048 512 26966 49850 871118 375306 4096 4 5532 6205 294232 190618 4096 8 8860 9727 444776 492601 4096 16 15612 19970 686431 280662 4096 32 18158 25792 888500 755032 4096 64 23505 35046 903024 745013 4096 128 36834 33957 578606 1352659 4096 256 53103 78990 1824383 411870 4096 512 35358 42909 2009857 1019649 8192 4 8063 8002 218494 377281 8192 8 9602 13046 639253 270594 8192 16 15119 25426 706397 423552 8192 32 22175 23698 483989 507148 8192 64 38646 36763 997935 554414 8192 128 41883 43889 653888 453349 8192 256 29451 51540 543341 499910 8192 512 43582 52877 944992 686730 16384 4 5552 5997 247268 152412 16384 8 8636 11043 374662 274430 16384 16 17426 18394 336627 395834 16384 32 22734 29087 1002621 806975 16384 64 27332 34684 1535088 652409 16384 128 25269 45974 750837 460068 16384 256 26681 34687 624888 492708 16384 512 34304 42708 642791 535846 32768 4 4702 5880 371472 234132 32768 8 17414 12579 368291 256117 32768 16