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 May 1 11:14:29 2025 Auto Mode Machine = Linux oleg207-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-oleg207-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 12968 31127 538156 336889 64 8 15717 51122 666414 603489 64 16 19642 79212 1210227 735831 64 32 21347 94128 1518251 1452528 64 64 19693 168954 1255511 2006158 128 4 18496 23468 332467 317523 128 8 21805 40660 514339 544601 128 16 31558 46446 824932 1067750 128 32 26112 50274 940549 1217930 128 64 40830 133889 1508887 1455701 128 128 40986 176323 1521718 2211113 256 4 19827 22612 333376 470566 256 8 28085 46386 713541 764334 256 16 43566 52373 984356 864661 256 32 54749 89420 1028679 1707589 256 64 52108 86453 1802167 1332507 256 128 61466 144712 1514860 1839210 256 256 68049 186322 2285501 1619994 512 4 22516 24096 495176 328622 512 8 36028 39665 854615 629058 512 16 47119 65097 1051242 1018341 512 32 51833 99981 973559 1036527 512 64 72460 142031 1261144 1619757 512 128 79050 144711 1472083 1329871 512 256 85649 131894 1518938 1480200 512 512 75282 125769 1764853 2297251 1024 4 22104 24212 375933 331816 1024 8 34523 45581 694663 725157 1024 16 54621 77271 727244 845498 1024 32 79183 96594 1328146 1158358 1024 64 85475 125551 1424152 1241031 1024 128 109658 141674 1667426 1615374 1024 256 98717 169201 1600327 1289855 1024 512 115289 208434 1988589 1484193 2048 4 24895 28058 318218 296984 2048 8 37709 48696 637197 715600 2048 16 66179 80559 680185 892015 2048 32 79521 104017 694933 735955 2048 64 107477 122994 1462662 1368084 2048 128 122158 170581 845981 1397918 2048 256 135136 190939 1861789 1702391 2048 512 139036 143791 1621413 1905146 4096 4 25232 30509 427958 475780 4096 8 41121 47637 661812 582392 4096 16 71107 85515 1201573 1068612 4096 32 110056 126834 1474944 1279234 4096 64 126115 139685 1216893 1758825 4096 128 142439 153092 1306572 1885865 4096 256 135943 225336 1784772 1845946 4096 512 167409 207466 1712369 1663618 8192 4 26659 26682 455392 406856 8192 8 42494 46858 649230 588676 8192 16 72267 79063 956914 923455 8192 32 94484 102203 1033412 1190532 8192 64 124270 145578 1419248 1182420 8192 128 125755 168569 1351797 1448628 8192 256 143835 187868 1367344 1406122 8192 512 149407 193591 1428156 1473414 16384 4 26562 29784 412103 436336 16384 8 43957 49943 638830 615248 16384 16 69792 86808 927228 1093879 16384 32 92145 114238 1148141 1074147 16384 64 120963 133247 1576756 1469689 16384 128 148170 147260 1411430 1557388 16384 256 148282 193774 1584354 1596575 16384 512 162189 196942 1696952 1795517 32768 4