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 15:41:47 2025 Auto Mode Machine = Linux oleg326-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-oleg326-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 12877 7142 153848 321940 64 8 19207 35145 361867 546928 64 16 20241 69474 780776 842003 64 32 12519 86709 877797 886494 64 64 26959 93440 1526887 1226821 128 4 12078 15539 304727 343091 128 8 13665 40506 214079 538051 128 16 23455 21125 908709 940549 128 32 29472 102245 985435 976473 128 64 21072 109883 1521718 1240443 128 128 26762 132763 1539168 1487977 256 4 19807 10085 124034 343179 256 8 31061 31399 109825 238354 256 16 27300 55067 802614 678807 256 32 47779 99413 1036624 1036624 256 64 36183 125984 1195962 1058076 256 128 84908 72683 1391207 287958 256 256 51947 192779 1985448 1842366 512 4 18944 20054 221371 323864 512 8 28809 35015 522399 500951 512 16 35929 59027 781526 804962 512 32 21893 90000 904658 988345 512 64 20140 138156 218622 260813 512 128 64710 139893 1383861 1270846 512 256 96063 88750 1560891 1270094 512 512 27514 207952 700463 165921 1024 4 7222 13280 350072 336285 1024 8 34368 22040 537825 279169 1024 16 50173 54240 702273 708062 1024 32 17899 93550 241618 995171 1024 64 38638 85008 550862 829175 1024 128 59262 65949 1333507 1265904 1024 256 43626 134897 1140214 662312 1024 512 96304 144486 1273410 441786 2048 4 16544 15768 155587 236352 2048 8 21198 33103 484163 180393 2048 16 28802 68605 726494 561587 2048 32 75073 66432 782624 971513 2048 64 68914 38802 1205468 914620 2048 128 64414 94242 1291174 1297807 2048 256 39382 134833 1503627 1474209 2048 512 113538 189573 1709505 1658350 4096 4 10860 15968 297091 272978 4096 8 23252 31739 184829 158122 4096 16 43145 44615 696505 599629 4096 32 41450 39605 781513 409768 4096 64 60183 74821 1213284 1139036 4096 128 53560 76471 1048652 1360263 4096 256 49079 67625 443193 921923 4096 512 61532 87422 763590 927348 8192 4 15793 13827 238798 294125 8192 8 23269 27190 525227 512573 8192 16 40187 58703 467105 377613 8192 32 51727 61729 968895 524657 8192 64 65775 61744 1106707 1054309 8192 128 67901 64049 1496256 552542 8192 256 73301 97124 388760 1309900 8192 512 72228 97442 1507812 816750 16384 4 13230 4479 287463 249137 16384 8 25485 25460 186245 242359 16384 16 33800 34004 580931 651321 16384 32 41541 56467 861450 706999 16384 64 49266 68488 942966 940695 16384 128 68772 90124 1156741 736726 16384 256 73002 80528 1447981 1663514 16384 512 81670 108700 1032136 905444 32768 4 13399 16429 172113 239995 32768 8 22327 22218 293265 331441 32768 16 32857 44107 855183 333520 32768 32 55465 72537 748795 690916 32768 64 62022 77507 853759 998664 32768 128 68617 92942 1053900 1259627 32768 256 96460 103288 881924 1054207 32768 512 107972 108917 1597982 1646393 65536 4 14932 14658 150044 179268 65536 8 26843 28648 449276 308121 65536 16 41718 41878 514387 515398 65536 32 47618 64613 708045 564926 65536 64 62066 70030 523869 888888 65536 128 66934 81057 816648 545151 65536 256