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: Thu Sep 25 09:51:37 2025 Auto Mode Machine = Linux oleg242-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-oleg242-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 8237 20505 292475 222989 64 8 15180 33161 727850 380864 64 16 18464 14722 500060 603489 64 32 22702 71586 955947 1255511 64 64 28961 86042 1017549 1232453 128 4 14628 20343 244721 254947 128 8 17078 38138 362798 353482 128 16 18301 56484 621518 669577 128 32 23022 78434 592699 604036 128 64 20002 106209 1175271 1007629 128 128 38577 125354 962469 1009524 256 4 15987 20563 286728 163261 256 8 21118 37708 457143 401878 256 16 21337 60506 715443 621448 256 32 44336 73817 868157 720726 256 64 32511 107290 1036624 1075025 256 128 45610 133337 1224606 1325925 256 256 63728 158701 214799 1967260 512 4 18019 19940 264996 246248 512 8 30927 34674 370971 330748 512 16 41758 61754 626672 586454 512 32 53211 93999 795127 668413 512 64 53753 124097 1190529 966113 512 128 79776 163782 1462061 1515722 512 256 73468 135233 1500891 1312798 512 512 80088 177290 1807941 2150051 1024 4 18568 19848 256832 248424 1024 8 29258 37294 423115 474068 1024 16 46049 62393 644038 661496 1024 32 58753 97597 1047091 839384 1024 64 73153 114811 1245710 1080004 1024 128 61616 138454 1512415 1291406 1024 256 84782 118107 1317957 1061060 1024 512 79533 157562 718125 1560781 2048 4 18409 19813 272992 244012 2048 8 29748 34570 441669 459089 2048 16 41194 49420 728342 639998 2048 32 65084 84366 979936 839040 2048 64 88059 120513 930068 1005870 2048 128 93850 148471 1620190 1237420 2048 256 88589 165589 1781107 1348963 2048 512 111104 164127 1910655 1517172 4096 4 19311 21804 301043 298672 4096 8 32683 35562 547586 468169 4096 16 49621 57088 709507 640208 4096 32 63555 85913 1029671 897645 4096 64 91921 120608 1263801 1139338 4096 128 86025 119274 1472290 989805 4096 256 108230 118570 1635118 1502550 4096 512 97698 138477 1761711 1598751 8192 4 18341 19788 294751 269439 8192 8 31532 33668 485912 479316 8192 16 47612 53808 790118 687706 8192 32 69446 87819 1057717 980367 8192 64 86021 120530 1248591 1149893 8192 128 87726 125624 1648676 1224299 8192 256 92161 134350 1789774 1351585 8192 512 94490 149217 1460264 1339466 16384 4 18615 20167 274319 249649 16384 8 29084 34002 485956 390849 16384 16 50043 57070 830790 671883 16384 32 64210 86677 1063755 883808 16384 64 87465 110049 1340872 1119286 16384 128 84253 126713 1141826 1360329 16384 256 92122 134834 1515921 1459483 16384 512 94788 139615 1748551 1158203 32768 4 18227 20410 277925 275099 32768 8 30856 34504 487531 470988 32768 16