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 Oct 10 19:13:31 2025 Auto Mode Machine = Linux oleg206-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-oleg206-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 12374 23827 473593 438043 64 8 16559 45646 394870 703068 64 16 21011 69708 566551 533875 64 32 20948 86849 1526887 1336792 64 64 23063 121916 1599680 695778 128 4 10794 16980 319983 254464 128 8 16058 27748 566435 432330 128 16 22342 54890 680612 889145 128 32 29257 82789 1504659 859260 128 64 34839 125972 1705404 1997245 128 128 34087 137033 1885042 2558895 256 4 18668 22194 395076 420283 256 8 26318 38583 677095 474937 256 16 34261 64957 501091 837026 256 32 45804 58742 1280084 1153561 256 64 29038 129807 1881098 605332 256 128 37964 69561 1814348 958864 256 256 57543 173918 1272498 1031644 512 4 18309 19770 425935 400664 512 8 30385 26641 684608 445553 512 16 45418 47587 430978 756207 512 32 34573 44084 663252 732478 512 64 53730 86897 1344020 1394645 512 128 59198 103479 1252318 1842059 512 256 56388 96786 1848401 2180616 512 512 87803 161007 1375881 1842059 1024 4 17566 23492 271699 222217 1024 8 24183 30170 620229 532226 1024 16 42896 74842 1113030 1065800 1024 32 64788 103195 1397280 1153381 1024 64 85077 132869 1479591 868581 1024 128 98177 168504 1896395 2098375 1024 256 105468 192342 995171 2073055 1024 512 107428 162203 2509027 2504637 2048 4 21052 23266 228014 396053 2048 8 36585 37437 714054 644850 2048 16 56704 59431 974268 740971 2048 32 63204 55076 1081337 1079570 2048 64 74025 53180 1164293 1023487 2048 128 94456 105481 1522550 1258634 2048 256 62868 152280 1034831 1221930 2048 512 93515 137505 1498120 1597293 4096 4 19830 21191 335381 326925 4096 8 29670 46154 760514 660337 4096 16 38318 56059 572799 500610 4096 32 81841 89757 1203594 616211 4096 64 74035 107037 1677262 1606825 4096 128 80261 131839 1252194 1446871 4096 256 103922 135114 853878 1254114 4096 512 86869 132900 1751831 1617110 8192 4 21540 24009 441353 351485 8192 8 34218 40092 733448 707852 8192 16 55859 60646 1158539 673287 8192 32 75423 88015 1081317 1122801 8192 64 81738 132550 1831854 1417550 8192 128 97293 148060 1534889 1777000 8192 256 101542 162099 1957506 1912294 8192 512 107783 158085 2229732 1621216 16384 4 23043 24555 432990 419187 16384 8 36156 44744 646103 607627 16384 16 50733 62930 1127365 937512 16384 32 82731 89573 1549592 836463 16384 64 87878 107904 1270094 1190962 16384 128 89484 146766 1882116 1648787 16384 256 112013 125184 1911805 1556083 16384 512 105547 120618 1858247 1940087 32768 4 21239 22001 394097 337644 32768 8 34284 37120 539649 700712 32768 16 49425 60055 1096364 937223 32768 32 67477 89039 1306481 1197789 32768 64 91916 123721 1593092 1230343 32768 128 105356 138036 1644738 1426428 32768 256 106661 140710 2300125 1977544 32768 512 124168 148129 1675332 1368139 65536 4 21087 22655 357854 361444 65536 8 34011 39245 731870 701301 65536 16 47499 61018 774328 1045931 65536 32 70028 86129 1334586 903410 65536 64 69665 117755 1218998 1548801 65536 128