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 21:32:37 2026 Auto Mode Machine = Linux oleg446-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-oleg446-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 1438 9314 603489 571375 64 8 2420 12573 703068 693980 64 16 3626 16064 603489 942521 64 32 2233 29014 1143223 863676 64 64 2198 21396 1638743 1562436 128 4 2258 7039 627328 482881 128 8 5759 18003 168890 618653 128 16 5228 14271 447464 901083 128 32 4933 26091 1231904 962469 128 64 6554 68080 1266785 395104 128 128 8750 59422 1539168 1057236 256 4 3200 3402 417667 604991 256 8 3134 11231 511840 372722 256 16 4494 8240 917096 725596 256 32 10679 39975 1117543 913973 256 64 8511 66060 977189 423098 256 128 5792 34529 1579483 1208072 256 256 14671 77198 1570244 2135500 512 4 4928 6486 392391 541773 512 8 11018 11256 891884 315305 512 16 6574 15502 548274 622855 512 32 5275 32872 316047 582478 512 64 11198 34561 704368 305135 512 128 17046 25767 621413 1305615 512 256 19619 36381 1299295 1166599 512 512 17867 70051 642227 657364 1024 4 9139 6321 566035 379688 1024 8 7750 18547 564844 151296 1024 16 20563 14632 627020 395200 1024 32 9867 41833 761950 257217 1024 64 27124 38628 233247 1081363 1024 128 18203 48962 588125 476910 1024 256 24207 20655 593325 1331440 1024 512 24816 39751 990352 392026 2048 4 5627 4212 143056 153950 2048 8 7883 8112 135798 224833 2048 16 16714 13797 382867 482911 2048 32 15470 21574 453084 997112 2048 64 12654 28976 697529 387583 2048 128 15670 40149 948136 574969 2048 256 34831 60230 1475476 1337619 2048 512 32172 55963 469836 1220541 4096 4 5669 5954 376844 224844 4096 8 9168 7734 295400 177577 4096 16 13895 17804 431711 175500 4096 32 16757 26267 711358 327967 4096 64 23222 54019 135552 213901 4096 128 15281 29294 779882 493251 4096 256 32663 46237 424018 461516 4096 512 24526 69030 769921 671802 8192 4 1797 4516 165669 151971 8192 8 8728 8799 277104 314267 8192 16 14735 27698 325441 425777 8192 32 16895 18367 385160 483274 8192 64 17428 23650 534933 419308 8192 128 39376 29478 1077046 792944 8192 256 28933 46051 715204 282056 8192 512 27318 35503 936441 814717 16384 4 4012 5340 151911 120032 16384 8 8179 9540 337849 300442 16384 16 10879 16289 432650 407509 16384 32 14895 19866 465759 348624 16384 64 19881 24060 532866 399620 16384 128 24058 37770 862272 544050 16384 256 29267 42811 398104 527459 16384 512 29586 33436 774515 633588 32768 4 4485 6073 283090 214980 32768 8 7549 8226