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 Jun 2 08:33:55 2025 Auto Mode Machine = Linux oleg143-client.virtnet 3.10.0-7.9-debug #1 SMP Sat Mar 26 23:2 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-oleg143-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 9530 22137 581273 315136 64 8 11317 41664 811459 582535 64 16 14423 64007 763021 821391 64 32 16064 86152 842003 1163036 64 64 15810 122584 1392258 1460430 128 4 16117 23083 327399 398921 128 8 23105 46543 551878 554157 128 16 26256 62435 688467 809997 128 32 19081 73566 1455701 556454 128 64 36027 69373 1346196 1303699 128 128 23933 132110 1618028 1911894 256 4 18191 23406 351147 293548 256 8 27801 34087 491458 644965 256 16 33979 56599 898674 910872 256 32 34316 83821 1254656 1089202 256 64 53521 132107 1190657 1319408 256 128 46478 140361 1325925 1673001 256 256 26016 134304 1894373 1855098 512 4 22391 21870 262438 422084 512 8 30441 40885 610287 542320 512 16 43805 65323 767559 677267 512 32 60406 92187 1286067 953671 512 64 60484 112949 1289930 1160923 512 128 72501 126734 1261144 1434711 512 256 56574 165168 601568 796306 512 512 54930 90665 1204552 1789859 1024 4 19270 22757 364017 319309 1024 8 38166 38571 574977 605965 1024 16 44761 62965 799390 794363 1024 32 65256 70923 1002137 1061060 1024 64 68203 114058 1201790 1039489 1024 128 81672 157898 1402756 1469467 1024 256 92838 170612 1460969 1617808 1024 512 74138 121128 1333093 1584972 2048 4 22926 23679 282565 368085 2048 8 35755 42827 561550 571108 2048 16 58272 69631 822490 840436 2048 32 81985 102738 1023000 1029128 2048 64 92426 81687 1219155 1162403 2048 128 101190 139824 1617749 1639674 2048 256 102155 150910 1499428 1257897 2048 512 118903 156087 1719429 1713598 4096 4 23455 23606 340176 379574 4096 8 40735 43518 550834 510457 4096 16 55656 67046 783652 921923 4096 32 82434 105176 1019407 1171583 4096 64 89455 123723 1350533 967182 4096 128 105044 148589 1464508 1022988 4096 256 126478 149817 1144119 1773166 4096 512 102808 150432 1638392 1787185 8192 4 22158 25167 369957 380296 8192 8 38622 41894 559788 479510 8192 16 62078 70479 766465 713334 8192 32 80902 99709 715338 1086308 8192 64 103790 123239 911234 1320218 8192 128 103533 140048 1333540 1421774 8192 256 126417 171308 1438741 1576582 8192 512 121573 163728 1325361 1532356 16384 4 24020 25324 356312 359085 16384 8 40663 42981 545731 559523 16384 16 61332 57678 775502 756832 16384 32 83381 79399 928117 1134231 16384 64 69343 112116 1396629 1041317 16384 128 100531 126771 1123733 1296109 16384 256 121140 133372 1237279 1513417 16384 512 115705 140733 1443540 1658136 32768 4 20546 22475 346099 362053 32768 8 39267 43491 615036 633751 32768 16 63667 69599 907422 880957 32768 32 90229 104843 1174734 1154980 32768 64 114540 127024 1315182 1354895 32768 128 107688 136715 1564547 1497763 32768 256 126252 157409 1439712 1467442 32768 512 120511 154011 1627578 1484193 65536 4 21158 23096 372950 374748 65536 8 35553 39957 508795 553686 65536 16