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: Fri Sep 4 08:09:15 2026 Auto Mode Machine = Linux oleg208-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-oleg208-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 1223 8593 109395 581273 64 8 3380 16890 863676 681644 64 16 1905 16414 998622 863676 64 32 1633 49111 1143223 415659 64 64 3142 72397 1013707 1255511 128 4 6298 8816 472262 589446 128 8 2473 10654 780556 566435 128 16 4186 26823 1024942 889145 128 32 7802 35535 1162547 1022989 128 64 7334 31219 1206978 1032829 128 128 8853 18507 1504659 2004703 256 4 7676 9130 380920 410325 256 8 9212 17662 401878 412215 256 16 9939 21162 1099237 514292 256 32 14248 44100 1062263 1036624 256 64 16596 50553 1266495 1286217 256 128 15180 68357 1398455 1391207 256 256 16583 70248 545931 491233 512 4 9431 11411 428485 522018 512 8 12932 19851 476286 584539 512 16 17254 36726 1045103 192257 512 32 21080 46980 784094 620694 512 64 20849 60009 1218910 338143 512 128 24674 55634 1454140 579804 512 256 15081 29520 823167 872320 512 512 26985 78634 1711407 2275345 1024 4 4642 4752 258845 110249 1024 8 14004 21499 482591 532226 1024 16 17215 27291 286659 944612 1024 32 7693 19704 313918 321484 1024 64 32528 65932 1053512 1031252 1024 128 20528 69469 943781 610270 1024 256 29356 71283 1265904 502229 1024 512 15995 37819 1421795 1001903 2048 4 3693 4613 205437 402682 2048 8 12243 16091 661690 718053 2048 16 16130 19290 331238 184342 2048 32 23966 47665 751275 345312 2048 64 14549 29057 675904 710099 2048 128 33523 69624 1440344 1230155 2048 256 22310 30207 854056 353221 2048 512 43268 46763 1288076 517940 4096 4 5624 6971 212822 172376 4096 8 11967 13126 566453 489597 4096 16 31112 37659 881253 692965 4096 32 27435 45527 659678 856005 4096 64 46574 38894 697070 1259539 4096 128 21592 40284 389841 537041 4096 256 42023 56964 835564 913055 4096 512 40443 77515 1702358 578781 8192 4 9703 8629 204826 213677 8192 8 9546 10470 555122 514184 8192 16 13193 20002 333836 501713 8192 32 19255 3702 904803 913268 8192 64 29887 49412 783774 672470 8192 128 36638 49406 899544 908800 8192 256 39892 54883 868705 707663 8192 512 38583 35819 322533 1129778 16384 4 6764 7455 175848 198709 16384 8 11566 16842 335675 426633 16384 16 17830 17750 716463 604197 16384 32 23302 25485 372574 492334 16384 64 21742 31776 706846 592594 16384 128 33314 32903 569205 348603 16384 256 32522 45377 667803 607831 16384 512 33555 34906 331197 333891 32768 4 5871 5256 292065 245018 32768 8 9093 13106 614014 529944 32768 16 20893 16393 862585 632831 32768 32 19383 23151 536961 319133 32768 64 23009 27361 378676 482243 32768 128 25836 42141 701416 637274 32768 256 32200 32272 454151 662903 32768 512 40580 45980 916970 973585 65536 4