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: Sun Sep 13 12:36:16 2026 Auto Mode Machine = Linux oleg344-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-oleg344-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 7506 16211 727850 503814 64 8 8067 32222 679917 418250 64 16 10702 45514 955947 1210227 64 32 11134 73648 1143223 1392258 64 64 13122 77474 659861 2467108 128 4 10528 19378 662962 814915 128 8 13576 32603 859260 735635 128 16 18971 55797 907174 883293 128 32 12242 63118 1114289 1508887 128 64 21476 87072 1363288 1391557 128 128 12934 101185 662962 1911894 256 4 11890 15992 820398 483927 256 8 14585 35150 930608 1011241 256 16 24107 46494 1332507 1028679 256 32 26066 73124 1619994 1108314 256 64 34311 106492 1071806 1300235 256 128 36158 124379 907792 1766587 256 256 27661 143092 2000242 2170027 512 4 14487 19298 924123 560729 512 8 24302 31227 499902 690996 512 16 25511 54213 1193838 982467 512 32 38455 81117 1510391 1015932 512 64 31557 89572 1446306 1279935 512 128 48800 116915 1446306 1191189 512 256 48370 143906 1422357 1459080 512 512 34049 153295 1595686 1968713 1024 4 16114 20663 741047 587803 1024 8 23816 36381 999107 857654 1024 16 37916 51064 1475525 1032244 1024 32 47679 78546 1466957 1120288 1024 64 54811 104554 1370965 1076755 1024 128 59187 121961 1378002 1368780 1024 256 65721 144427 1709231 1546729 1024 512 86137 123792 1720874 2316837 2048 4 11425 18994 619683 599863 2048 8 28446 35824 976705 1022026 2048 16 43661 56911 1279824 1068292 2048 32 57631 74829 1197736 1336787 2048 64 76577 105600 1605053 1355348 2048 128 64726 115660 1763917 1358993 2048 256 86380 130074 1882186 1142916 2048 512 85053 144032 1571864 1529599 4096 4 11532 19891 693525 585568 4096 8 28956 33563 995138 1011603 4096 16 47375 55330 1580367 1344719 4096 32 60924 75590 1488361 1165305 4096 64 86155 110711 2090820 1599346 4096 128 88688 111696 1835102 1535726 4096 256 81869 135885 1739239 1575440 4096 512 93107 145413 1914019 1555048 8192 4 17734 18959 813906 616397 8192 8 29352 33338 1152322 989258 8192 16 45615 55158 1192102 974556 8192 32 69124 78348 1588830 1398396 8192 64 75487 101332 1452240 1468063 8192 128 93570 120927 2052699 1761332 8192 256 91093 141419 2017742 1766676 8192 512 95418 135678 1871567 1590669 16384 4 18086 18577 883183 722178 16384 8 29511 33958 1195125 1014117 16384 16 46457 54396 1478702 1253849 16384 32 68133 79243 1579184 1403102 16384 64 80795 98396 1907348 1698169 16384 128 96541 125694 2229139 1864144 16384 256 99358 135602 2201009 1598097 16384 512 113812 160993 2415463 1842750 32768 4 18687 20235 649900 611068 32768 8 30547 32476 1174864 988358 32768 16 44355 54271 1430853 1173219 32768 32 56802 75670 1605561 1397478 32768 64 75344 93556 1587663 1394925 32768 128 82248 114545 1977060 1684738 32768 256 85605 125966 1644561 1706832 32768 512 91729 133867 1780394 1641516 65536 4