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 24 12:13:59 2025 Auto Mode Machine = Linux oleg317-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-oleg317-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 5740 20125 511494 367817 64 8 5760 22662 576282 592827 64 16 9290 48552 983980 831569 64 32 9745 59974 1105556 969761 64 64 11610 91684 1204796 1526887 128 4 7542 21527 501839 558771 128 8 15216 36908 799146 711270 128 16 19161 53941 1007629 1007629 128 32 16786 78331 1377278 1067750 128 64 23881 95941 819893 1319723 128 128 23682 57834 1508887 1539168 256 4 14802 16431 585845 579209 256 8 25695 34693 808050 592309 256 16 21068 57893 699594 907792 256 32 28959 75409 1254656 996229 256 64 33661 89824 1487577 966633 256 128 20021 106661 1062263 1588832 256 256 24260 133056 1763685 2000242 512 4 8105 17584 471890 296090 512 8 14424 35558 876593 358044 512 16 22299 61069 807687 973118 512 32 18184 72032 1009722 1196499 512 64 23149 89059 1306409 1251589 512 128 30383 121844 1375881 1712772 512 256 49960 116339 1484293 1429934 512 512 45377 124061 1137555 2141475 1024 4 18202 20484 476699 554704 1024 8 24350 36533 859714 401706 1024 16 39130 60619 1066594 882139 1024 32 41283 65932 1508167 1306332 1024 64 41250 101156 1436056 1154311 1024 128 60663 81848 659363 1347734 1024 256 55169 113426 1670669 1554004 1024 512 54666 134067 1197769 901394 2048 4 18300 20832 605402 549235 2048 8 22165 36217 979936 568124 2048 16 43596 53435 1189938 897795 2048 32 50660 79076 1225591 1190763 2048 64 58552 111734 1415424 1325442 2048 128 67818 111080 1515833 1227693 2048 256 82374 129999 1713598 1491617 2048 512 75155 136515 1756343 1545840 4096 4 19355 21773 548828 576335 4096 8 30284 36668 943596 852437 4096 16 43567 57922 1115155 1165621 4096 32 64679 80806 1260648 908180 4096 64 56296 96039 1554485 1279615 4096 128 63060 99550 1573564 1374960 4096 256 71424 120712 1640269 1458169 4096 512 60105 108434 679615 1252651 8192 4 17290 20498 621594 325142 8192 8 30941 34389 833634 904493 8192 16 34780 41190 982133 1042885 8192 32 44374 59588 1370836 989145 8192 64 56640 83797 1194547 1258745 8192 128 65954 106254 1633548 1381640 8192 256 67022 112600 1600002 1530104 8192 512 75626 118401 1407793 1138387 16384 4 16609 19849 600895 550999 16384 8 27991 36962 909567 798285 16384 16 44605 49180 1130723 1057372 16384 32 61787 69976 1506021 1115760 16384 64 70214 97021 1458925 1376211 16384 128 71120 98340 1442995 1274617 16384 256 75544 115074 1711832 1452849 16384 512 96938 141097 1840282 1328045 32768 4 19791 20284 696645 585886 32768 8 27336 31170 910959 837925 32768 16 44102 57059 1108264 744539 32768 32 58688 75150 1335502 1157353 32768 64