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: Tue Apr 1 07:58:18 2025 Auto Mode Machine = Linux oleg349-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-oleg349-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 22175 24980 484710 520419 64 8 31188 44875 771797 983980 64 16 50592 74321 863676 913649 64 32 45101 125978 821391 913649 64 64 50793 191629 1562436 1780008 128 4 21255 28149 576780 581781 128 8 23951 37100 537512 789741 128 16 52827 87555 1319723 836500 128 32 43126 110154 1319723 1065630 128 64 68227 184187 2004703 1967960 128 128 70875 210141 1732927 1684006 256 4 26305 37437 345387 376512 256 8 35874 69774 613985 519266 256 16 50915 72910 1376935 958864 256 32 83880 163162 973645 1103757 256 64 90269 159502 1967260 1362952 256 128 102155 253671 1766587 1610276 256 256 102311 269459 2639446 2692393 512 4 35131 30199 596058 531712 512 8 44999 56882 510478 660600 512 16 66605 117215 1230786 1216149 512 32 115943 117833 1130370 1213400 512 64 158804 243567 1985091 1803387 512 128 147423 213344 1599251 1760512 512 256 159299 316047 2244430 1700565 512 512 112452 271771 2572435 1992458 1024 4 29620 33307 571154 581123 1024 8 51470 50193 660682 943781 1024 16 67995 90259 695675 916786 1024 32 126606 127743 1273788 781783 1024 64 159079 223826 1744641 1289467 1024 128 138360 313139 1482144 1229309 1024 256 161308 300036 1466957 1599731 1024 512 159801 196847 1510288 1689730 2048 4 26440 40680 443768 471125 2048 8 58725 66718 822805 622287 2048 16 96681 91801 1145965 1271301 2048 32 128798 140198 1569280 749636 2048 64 145466 193755 1917479 1358993 2048 128 151626 290045 2060526 1809243 2048 256 228852 280581 1693997 1856558 2048 512 216514 328728 1776319 1858164 4096 4 36616 24060 455013 377722 4096 8 61806 56484 546993 821028 4096 16 94469 114394 837478 820832 4096 32 142549 125209 1150863 1042227 4096 64 139372 166673 1627990 1991221 4096 128 158489 217781 1814748 1665070 4096 256 210311 278655 1710323 1754156 4096 512 227403 269742 1234469 1948536 8192 4 34951 31519 399746 417530 8192 8 54610 66799 844971 836170 8192 16 95579 95938 789211 849882 8192 32 145829 145348 1021704 1037751 8192 64 174795 214040 1489768 1324033 8192 128 216599 223386 1817705 1432383 8192 256 234895 242998 1404455 1448872 8192 512 223008 240459 1636426 1968835 16384 4 28774 32262 502589 530035 16384 8 52968 60375 793611 601953 16384 16 98182 96992 940643 921545 16384 32 130755 137977 1472461 1313023 16384 64 171081 177267 1940526 1371870 16384 128 199258 168459 1585121 1500366 16384 256 196809 295985 1686458 1447493 16384 512 163323 227227 2191253 1908884 32768 4 31190 31762 317611 508575 32768 8 57141 61555 786557 636162 32768 16 97797 103102 1176252 1034699 32768 32 132359 134043 1395690 1538039 32768 64 166059 184526 1605880 1676886 32768 128