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 Mar 28 19:14:05 2025 Auto Mode Machine = Linux oleg355-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-oleg355-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 15314 24700 516414 507625 64 8 19584 62068 799377 651849 64 16 29780 82702 1452528 877797 64 32 27291 91435 1255511 1124074 64 64 36423 153146 1638743 2467108 128 4 21764 24427 438331 561694 128 8 34887 33906 624409 1040839 128 16 40011 89825 927549 1032829 128 32 49766 91044 1471662 1332828 128 64 55411 151111 1487977 2132084 128 128 54862 198121 1710838 2608629 256 4 27379 25617 528987 600928 256 8 34325 47718 669913 931416 256 16 54585 72792 877379 735537 256 32 73757 129948 1076103 1775350 256 64 65305 214928 2242541 1622442 256 128 90300 217321 2435861 1579483 256 256 96353 227160 2366082 2000242 512 4 21154 32329 599553 632020 512 8 53306 62790 751971 1045103 512 16 67163 87492 1354190 1293037 512 32 75327 160298 1130370 1455126 512 64 106798 110701 1500891 1734911 512 128 102667 180100 1975959 2225819 512 256 125306 245460 2132967 2317080 512 512 129033 247582 1783912 2391924 1024 4 32558 30425 448335 648903 1024 8 56161 50668 905384 649688 1024 16 68376 106256 1199106 1331853 1024 32 99913 142757 1662264 1454537 1024 64 106824 159778 1605111 1490373 1024 128 140851 203699 2120127 1648862 1024 256 159546 255686 1812371 1973059 1024 512 126890 249928 1907343 2369237 2048 4 29861 32166 337670 387950 2048 8 47175 48223 571754 884301 2048 16 76654 83920 1082973 942415 2048 32 100186 123061 1266614 1057248 2048 64 127688 152369 1411238 1379066 2048 128 142331 163958 1666393 844900 2048 256 168629 176461 1533148 2043857 2048 512 169608 210219 2211731 2464260 4096 4 31771 35935 466365 352980 4096 8 48888 49697 635448 704242 4096 16 74514 90152 958547 872614 4096 32 98787 146291 1592526 992034 4096 64 143331 166376 1149939 1117040 4096 128 154460 166633 1225225 1336870 4096 256 167559 206224 1770790 1349154 4096 512 158274 239993 1390879 2316655 8192 4 33135 31797 524089 464133 8192 8 50430 56139 761978 645704 8192 16 83249 86562 851377 920141 8192 32 103861 140153 1294551 1326845 8192 64 148048 170851 1303638 1725336 8192 128 177415 187907 1451934 1811954 8192 256 180910 195442 1931211 2048050 8192 512 211565 223916 2228575 1983039 16384 4 31453 33053 479105 576879 16384 8 53379 47435 740481 610070 16384 16 78655 83357 956845 851998 16384 32 104247 117930 1280603 1434410 16384 64 140818 152972 1406347 1480168 16384 128 167505 174566 1545654 1757360 16384 256 150560 202711 1602831 1647443 16384 512 144153 193751 1642835 1929790 32768 4 30495 34154 560875 524456 32768 8