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 8 06:34:39 2026 Auto Mode Machine = Linux oleg131-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-oleg131-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 2025 1136 889431 703068 64 8 3981 17376 608965 117026 64 16 4626 43870 1518251 295047 64 32 6598 81324 1279447 1526887 64 64 4124 67297 1232453 1679761 128 4 1041 7206 212302 493989 128 8 2855 5358 703810 612303 128 16 6481 52008 859260 681476 128 32 3730 39604 477725 1093856 128 64 13932 63937 969421 1254941 128 128 13638 66843 1598754 1911894 256 4 2822 12886 339920 530031 256 8 12589 14906 826078 347848 256 16 11186 34939 713067 507006 256 32 4715 20545 1093639 992545 256 64 19970 19299 304797 1306564 256 128 26736 88397 1306564 1829808 256 256 33406 58062 1652404 1802167 512 4 6678 15719 489867 984720 512 8 27249 44896 932550 648237 512 16 24161 59715 1118011 859060 512 32 23563 70933 1296159 1012101 512 64 30534 45450 1510391 1038532 512 128 10742 29590 1829505 2381315 512 256 43813 162444 1968713 2132967 512 512 26547 28980 762924 1580419 1024 4 10060 18465 627111 486913 1024 8 28619 21131 733454 984676 1024 16 6886 19339 600963 537555 1024 32 6166 24945 594639 604090 1024 64 13157 114925 1200782 138718 1024 128 80903 153064 841357 743098 1024 256 40056 35722 1558516 815943 1024 512 47572 43700 753528 1081091 2048 4 5337 4810 613882 183330 2048 8 7536 13721 839368 546301 2048 16 21254 20635 1078486 495645 2048 32 12570 40364 842827 447653 2048 64 43094 20079 528910 1202599 2048 128 42313 30643 375650 686052 2048 256 27837 82401 1059464 1480817 2048 512 55615 72196 385461 290870 4096 4 13829 9190 455315 304716 4096 8 12861 9828 282541 348329 4096 16 17308 32943 438823 519990 4096 32 16084 24002 923360 809805 4096 64 36415 56163 577148 414494 4096 128 30819 41397 862148 751268 4096 256 38981 63524 847852 1429653 4096 512 31823 47629 387363 1319112 8192 4 6203 5555 380191 252589 8192 8 9818 9661 303496 267712 8192 16 15839 20696 595006 503536 8192 32 24738 31109 604756 459398 8192 64 31757 37451 354279 418236 8192 128 33649 54953 1346711 1018524 8192 256 36191 55464 1185685 914094 8192 512 38793 52233 677468 704991 16384 4 6116 6381 364080 253948 16384 8 10544 15004 451176 393988 16384 16 17169 25202 504697 292055 16384 32 21023 25601 802077 804161 16384 64 27570 44930 638082 397505 16384 128 27454 46181 804048 1066248 16384 256 40876 55946 817643 1319807 16384 512 34204 67988 1088197 596933 32768 4 5535 5782 240851 183133 32768 8 9080 9875 334465 263847 32768 16 14934 24867 695193 583142 32768 32