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: Wed Oct 22 04:28:53 2025 Auto Mode Machine = Linux oleg233-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-oleg233-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 18007 30016 1083249 633392 64 8 24006 37665 385790 512471 64 16 27574 61897 1124074 1734015 64 32 34332 110339 1163036 2006158 64 64 43956 177324 1066042 3203069 128 4 22943 24118 836500 606082 128 8 31792 53041 1319723 637004 128 16 39202 69607 1911894 1579934 128 32 48634 139273 1424795 1471662 128 64 58129 119842 1278855 2326073 128 128 72650 209485 1911894 1487977 256 4 22432 26736 792543 550409 256 8 44336 51447 1248819 782721 256 16 32745 88579 1588832 1924938 256 32 78894 148495 1066483 1523457 256 64 101547 115570 1842366 1829808 256 128 74920 171831 2463808 2350543 256 256 104522 208460 1629830 2613746 512 4 26927 32010 1030064 894857 512 8 45824 58809 1357615 1127995 512 16 57239 70620 1051242 898225 512 32 90109 147210 1402845 1875849 512 64 102232 187474 1201856 1369738 512 128 63586 206850 1610042 1459080 512 256 142891 284253 2246778 2695115 512 512 89951 317027 1753325 2071249 1024 4 24538 30897 620229 789544 1024 8 47661 50446 1115342 1171629 1024 16 73807 98976 2138070 1602715 1024 32 98937 137356 1481633 2236023 1024 64 112416 143152 2541692 1899750 1024 128 116787 154407 2443368 2138070 1024 256 119767 206828 2226749 1605111 1024 512 120344 209451 2056183 2666347 2048 4 25893 27037 814303 752393 2048 8 41727 47478 1189279 794422 2048 16 64178 85643 2072957 1515833 2048 32 101703 115680 1448358 1310279 2048 64 123635 176229 2230685 1771922 2048 128 133403 243576 2415069 2164908 2048 256 98736 220714 2426668 1903457 2048 512 161068 255266 1734007 2522144 4096 4 29507 26378 1114215 742823 4096 8 40563 59305 1579641 1417386 4096 16 77495 79646 1907643 1915727 4096 32 93453 123492 514324 652834 4096 64 121820 178600 2046000 1233317 4096 128 143885 238041 1768421 1341673 4096 256 122825 223679 2377242 1414818 4096 512 127086 256543 2193882 1921297 8192 4 25277 27501 873342 628852 8192 8 40321 49860 1101527 959828 8192 16 67048 72283 1317686 1371273 8192 32 84897 103836 1363275 1279368 8192 64 104620 128093 1711670 1851298 8192 128 107563 171230 1790613 1638065 8192 256 128100 177712 1785124 1382640 8192 512 170354 211811 2254900 2207385 16384 4