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 15:52:22 2025 Auto Mode Machine = Linux oleg107-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-oleg107-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 11313 8794 355635 404998 64 8 16410 28132 659861 174444 64 16 14585 52760 866463 179219 64 32 17176 39338 877797 248136 64 64 15271 64842 1392258 1518251 128 4 11873 9440 350711 214079 128 8 8406 7012 549056 127862 128 16 18374 36729 290859 600657 128 32 17220 90782 1067750 361576 128 64 8385 41557 1363288 1440082 128 128 27833 19502 1778862 1802755 256 4 16741 17190 590031 156389 256 8 23362 25251 369897 60911 256 16 11402 28757 156480 226155 256 32 23949 92485 889002 1062263 256 64 33246 132777 1260547 1208072 256 128 18005 148249 1642294 1437779 256 256 40011 203985 1718521 1619994 512 4 13666 13832 296294 261352 512 8 20980 33105 383492 432454 512 16 42688 49488 773364 750919 512 32 30208 96132 1075459 414908 512 64 34662 152826 1279935 1187895 512 128 41304 158910 1347393 1219602 512 256 64949 151031 1605228 1723770 512 512 42335 69613 992456 1975959 1024 4 12818 13197 127360 180507 1024 8 11602 27264 446610 415421 1024 16 30953 55399 541828 693205 1024 32 24599 46117 1131503 768769 1024 64 83182 96943 431533 296720 1024 128 32418 83110 1304348 1540074 1024 256 44646 61287 1587315 1599731 1024 512 67077 195378 1681790 897438 2048 4 15205 6550 220759 295534 2048 8 18366 10823 282565 237502 2048 16 15886 30616 165551 645238 2048 32 43432 33329 558956 759915 2048 64 25036 45493 224193 863760 2048 128 51958 116078 984090 958825 2048 256 71821 84290 421575 1427182 2048 512 108802 100186 1454489 2056087 4096 4 6857 10144 116575 117864 4096 8 18112 16742 253701 245283 4096 16 25429 29912 280140 343049 4096 32 37158 29244 1000236 452354 4096 64 33606 50380 272593 691431 4096 128 54571 67124 830354 1029178 4096 256 53577 70229 1019165 579758 4096 512 49431 50609 706821 1097838 8192 4 11162 11978 95464 153996 8192 8 3103 19710 365288 101629 8192 16 29276 20348 434379 355000 8192 32 34655 73598 784974 682257 8192 64 54054 50769 946189 913876 8192 128 55730 54887 370492 1111972 8192 256 52832 50207 857176 1178567 8192 512 48661 62712 1147359 1194506 16384 4 9058 8899 227957 138666 16384 8 18358 23309 240505 257987 16384 16 21361 33332 299908 269247 16384 32 44383 40061 571691 371274 16384 64 73037 71087 345791 345990 16384 128 50822 53148 434485 747448 16384 256 49312 60413 1262928 1252889 16384 512 58159 60204 280595 685325 32768 4 9404 10185 76334 144490 32768 8 16867 14907 220818 362073 32768 16 26773 31376 466190 375221 32768 32 31051 49901 735121 740368 32768 64 48634 65024 650623 707457 32768 128 62089 57424 515585 853378 32768 256 49979 65625 330896 463256 32768 512 63810 76267 481025 730367 65536 4