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: Mon Sep 7 23:01:53 2026 Auto Mode Machine = Linux oleg455-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-oleg455-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 3396 2441 179819 323102 64 8 2513 16028 771797 349613 64 16 2486 15576 1124074 942521 64 32 1839 26879 1452528 1013707 64 64 4189 37471 1562436 1599680 128 4 4266 11547 656477 495814 128 8 6082 17713 695603 723735 128 16 6875 29122 1085013 45070 128 32 8637 59813 1373754 1015251 128 64 8012 78965 1336145 1076312 128 128 10335 63244 1504659 2027414 256 4 6472 6167 560172 453858 256 8 9996 14164 731528 910872 256 16 6429 28441 937106 850282 256 32 14373 47397 540164 856386 256 64 14755 49669 1274008 613985 256 128 7953 45022 1619994 1122215 256 256 13250 100164 1445521 1897721 512 4 5341 5958 594079 145950 512 8 12321 15992 433852 742096 512 16 12390 24521 969603 842214 512 32 8385 34891 1320061 1155924 512 64 16082 52773 922535 617659 512 128 17482 51420 885996 771143 512 256 26141 74537 1523247 1402845 512 512 10443 37772 1380303 2116152 1024 4 4483 6440 165746 113426 1024 8 9203 15152 337076 451303 1024 16 12102 11343 501935 145209 1024 32 11450 39149 442515 774034 1024 64 21451 25287 614989 996094 1024 128 18111 20333 210436 278716 1024 256 26846 25137 677246 910181 1024 512 31311 81159 1019019 1307923 2048 4 5667 6254 182598 255684 2048 8 11861 9268 303941 256035 2048 16 12748 20125 215012 432528 2048 32 13058 16415 665999 461978 2048 64 18653 33482 1094007 1164925 2048 128 13968 31296 488069 128175 2048 256 17384 46167 655129 485422 2048 512 37683 67138 357991 684467 4096 4 5455 5690 255330 245490 4096 8 6519 9046 263172 406510 4096 16 10448 16050 438353 331256 4096 32 18584 22505 603696 384708 4096 64 19921 58954 433301 777235 4096 128 41790 27526 614734 498417 4096 256 46902 59495 1257602 440240 4096 512 40402 46438 1718879 461157 8192 4 5572 6068 282007 290240 8192 8 10539 9807 349160 248846 8192 16 25823 30301 495020 580864 8192 32 18280 25961 541082 356049 8192 64 18410 23019 858697 391043 8192 128 33542 26751 562639 792871 8192 256 40382 41229 1045550 616254 8192 512 30747 34526 366614 272105 16384 4 5285 5395 320639 222963 16384 8 9352 10265 526748 421822 16384 16 14875 23208 440134 607466 16384 32 22169 24177 420717 676660 16384 64 26780 25022 438167 728795 16384 128 24977 31749 788638 1226633 16384 256 27324 42316 740186 533682 16384 512 30730 39527 1104125 742738 32768 4 7111 6541 211954 198487 32768 8 7937 10955 193873 170165 32768 16 12635 14160 372291 306954 32768 32 14061 19627 694810 595804 32768 64