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: Sun Sep 6 22:11:11 2026 Auto Mode Machine = Linux oleg347-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-oleg347-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 1665 10632 512471 153760 64 8 5432 30682 809014 735831 64 16 5795 18545 346008 524487 64 32 6058 41664 1183548 1124074 64 64 6549 84980 1163036 1255511 128 4 4901 13917 435487 452366 128 8 5583 15232 673778 819893 128 16 2532 23894 1175271 955616 128 32 8646 59700 1391557 1076312 128 64 8584 71422 1377278 1303699 128 128 17469 25692 1424795 1911894 256 4 7512 10316 418971 437582 256 8 6190 11691 900936 802614 256 16 11143 44707 955451 1019886 256 32 10253 51302 715443 219184 256 64 21720 36265 777619 1280084 256 128 10772 19483 1514860 1413179 256 256 14072 32845 1552085 2061693 512 4 5717 7243 156342 286185 512 8 9724 19372 167421 503536 512 16 21113 37166 817837 1057974 512 32 14782 31716 1198502 1185272 512 64 38441 78588 1472083 144916 512 128 32761 77015 1204552 1176828 512 256 15762 47136 1562027 1684557 512 512 31734 67995 1854787 1797349 1024 4 9548 9628 327041 552563 1024 8 14401 13998 839876 286927 1024 16 29427 39869 558672 1013967 1024 32 26240 53957 984676 1122630 1024 64 16854 34948 1321607 805084 1024 128 34816 80477 1153071 1265904 1024 256 33289 41639 914444 1558516 1024 512 28006 48755 713591 1115342 2048 4 7285 7353 317126 285438 2048 8 12178 18235 423236 366233 2048 16 19303 21802 446281 605743 2048 32 17531 37383 1286533 741995 2048 64 33199 62576 1496033 446374 2048 128 37457 43077 1599971 801613 2048 256 23276 48176 378481 883119 2048 512 33703 37835 217688 705955 4096 4 6638 7843 428139 343942 4096 8 9979 16387 536136 274365 4096 16 14818 17165 630736 303768 4096 32 18930 35884 755597 378179 4096 64 25798 63417 900610 881841 4096 128 33719 59865 944841 822798 4096 256 38438 36212 1155741 516519 4096 512 49720 59035 449419 276235 8192 4 2206 6998 467099 324360 8192 8 12469 13457 243021 501742 8192 16 19452 16307 464818 415314 8192 32 22278 34344 506058 352998 8192 64 23224 33512 480980 406856 8192 128 24732 50495 605919 442883 8192 256 35775 55465 512864 343265 8192 512 35952 61128 910920 630733 16384 4 6679 9196 237628 291915 16384 8 12364 11939 405272 317327 16384 16 19242 25940 503303 348617 16384 32 24278 32528 862131 487168 16384 64 27573 38897 445871 583264 16384 128 42234 51693 1194356 1108686 16384 256 39442 67826 942152 838954 16384 512 42909 62559 1005452 431360 32768 4 8153 9059 383552 232889 32768 8 10918 16510 415178 386315 32768 16 20118 26765 596249 579288 32768 32 31184 37293 617600 550952 32768 64 36436 50134 1101187 630905 32768 128 39972 60421 700051 663210 32768 256 40754 58558 889878 929327 32768 512 44581 72908 1128650 1101001 65536 4