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 May 16 08:53:51 2025 Auto Mode Machine = Linux oleg334-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-oleg334-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 7639 27600 763021 598110 64 8 9616 51823 1124074 1083249 64 16 11710 65587 799377 1183548 64 32 16477 91031 1562436 1392258 64 64 9757 121639 1768283 1679761 128 4 9654 28848 776042 747933 128 8 15395 47816 983630 1231904 128 16 16720 73687 1346196 247999 128 32 17317 76327 1421023 579270 128 64 23646 115959 1603529 1710838 128 128 19090 135443 2058509 1727352 256 4 14664 27962 723153 753077 256 8 23971 49144 904732 889002 256 16 26170 75985 1306564 654798 256 32 20913 148927 1437779 255969 256 64 24190 79626 833776 1740810 256 128 30317 182739 1729594 1802167 256 256 54959 152654 2049885 2187712 512 4 22236 25002 703215 702295 512 8 25269 52577 399695 1108203 512 16 36524 77655 583744 1245780 512 32 42666 113528 1429934 1875849 512 64 54514 111304 1195832 1497750 512 128 52197 153943 1684557 1823291 512 256 62898 173270 461744 1640796 512 512 77048 100727 1882427 2081286 1024 4 22557 21743 314492 749060 1024 8 36657 49863 1197769 1667426 1024 16 41516 78401 721624 1244266 1024 32 64193 107541 1446698 731954 1024 64 42476 102276 1343518 1510288 1024 128 76964 167950 1625769 1503415 1024 256 98946 132112 1771993 1777861 1024 512 78077 153683 1848247 1831694 2048 4 23119 31047 561257 609353 2048 8 31044 50719 496361 1000480 2048 16 49383 63466 992275 1000480 2048 32 69311 90671 983189 536274 2048 64 63884 98670 1428131 1591080 2048 128 90399 124580 1662523 1090535 2048 256 75972 105593 1414259 1590196 2048 512 108890 197040 1860176 1790015 4096 4 22357 25213 725844 831680 4096 8 32092 43400 779917 619768 4096 16 51821 80276 966964 1297494 4096 32 81460 75896 1380041 819540 4096 64 93820 92993 1120026 851002 4096 128 100889 152875 1337703 1710153 4096 256 83496 156002 1348730 1725266 4096 512 109151 136715 1598156 1802940 8192 4 22790 23610 622438 457551 8192 8 33522 42082 1093569 770729 8192 16 56076 59967 1316828 916117 8192 32 66525 81867 1482441 1177154 8192 64 93611 89105 1673896 1471521 8192 128 95764 148656 1408024 1095906 8192 256 93265 154761 1344708 1471269 8192 512 86002 142387 1828929 1443031 16384 4 17296 19485 671562 840155 16384 8 26799 37333 954453 828356 16384 16 52604 55734 1239153 1237657 16384 32 71247 77390 1376128 1576431 16384 64 79327 105130 1435039 1451560 16384 128 97736 123323 1602532 1417048 16384 256 83689 124685 1113807 1155185 16384 512 89758 122134 992069 1468496 32768 4 22208 27027 695992 759856 32768 8 38710 44034 1035424 1044934 32768 16 59894 71154 1019253 912858 32768 32 67568 101865 1206750 1098643 32768 64 98382 119018 1566562 1440723 32768 128 119456 130249 1490939 1375588 32768 256 111076 139194 1737714 1367323 32768 512 130257 156762 1084640 1883427 65536 4 26147 29306 630360 717517 65536 8 43058 43895 853732 1090431 65536 16