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: Thu May 1 15:13:15 2025 Auto Mode Machine = Linux oleg308-client.virtnet 3.10.0-7.9-debug #1 SMP Sat Mar 26 23:2 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-oleg308-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 6847 7089 394870 367817 64 8 6452 40790 592827 503814 64 16 8067 45708 955947 752329 64 32 8494 87672 1105556 1204796 64 64 9060 112892 1452528 1599680 128 4 11091 14214 373396 340264 128 8 5824 11943 576780 584313 128 16 16221 57402 864797 1022989 128 32 15151 24517 985435 1076312 128 64 12181 110064 633995 1451764 128 128 7961 36833 1778862 1663139 256 4 6604 10351 425951 221262 256 8 23456 15992 521536 169178 256 16 18194 35466 859127 1142514 256 32 27986 98682 1108314 143417 256 64 37183 128058 1362952 1312954 256 128 26332 144382 1619994 1471270 256 256 37914 61085 1686137 2114473 512 4 14813 24177 442524 140894 512 8 16723 41207 713021 459964 512 16 40599 35957 767559 962649 512 32 34181 83252 1120344 1160923 512 64 26834 115110 1190529 1361920 512 128 26809 152025 1467055 835334 512 256 23574 163882 1718254 714207 512 512 36025 180843 2256220 2124526 1024 4 19582 23821 188725 230629 1024 8 26600 32611 631352 552918 1024 16 45653 57752 713591 401706 1024 32 54421 75305 1010864 378117 1024 64 23076 29951 1095150 961314 1024 128 51868 101608 1402756 1340164 1024 256 68673 105535 1768345 1605111 1024 512 42470 166099 1783768 2000631 2048 4 11545 11428 377998 314697 2048 8 18990 40631 755437 405457 2048 16 29879 51111 818884 650121 2048 32 50919 68096 1093450 1112425 2048 64 65645 126146 228700 1284801 2048 128 100352 56250 1530689 783838 2048 256 69828 84569 1688337 1685687 2048 512 101982 107073 1279252 1698016 4096 4 21441 19325 369413 291387 4096 8 31109 36978 580816 435188 4096 16 51703 65711 866497 797846 4096 32 46931 108871 1116968 1064177 4096 64 86641 112250 1132728 1500843 4096 128 83027 116988 881208 1517548 4096 256 80302 123459 1635740 1018440 4096 512 94267 115471 1104331 1793342 8192 4 17512 17640 309472 275473 8192 8 34401 36196 494628 484760 8192 16 42059 60256 948147 781830 8192 32 64183 75173 729726 1093151 8192 64 61756 110260 1117469 1049190 8192 128 76224 97138 1565163 1462564 8192 256 115027 121530 1513124 1649309 8192 512 97604 165308 1729766 1684564 16384 4 15973 16451 211994 132690 16384 8 21910 22760 359778 356382 16384 16 38407 37102 695387 331365 16384 32 38286 92145 521947 863268 16384 64 68954 114953 1119577 1297332 16384 128 84683 115215 1296500 389288 16384 256 78315 101815 1198522 1645313 16384 512