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 Mar 11 07:24:58 2025 Auto Mode Machine = Linux oleg260-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-oleg260-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 13467 20062 340306 435202 64 8 19589 32752 818885 852702 64 16 18439 77856 1124074 1124074 64 32 23678 120547 969761 969761 64 64 24410 125507 1484662 1734015 128 4 18784 22268 492178 351630 128 8 21034 26857 785122 805138 128 16 28673 80108 673778 731625 128 32 33498 118076 1196221 814915 128 64 35320 94257 1391557 1048974 128 128 52440 164542 1579934 1778862 256 4 23751 24748 523570 283847 256 8 32237 55171 481109 847597 256 16 48174 76828 805021 1137672 256 32 54087 77015 1272498 1031644 256 64 62257 146449 1729594 1532153 256 128 63728 173441 1552085 1729594 256 256 64891 185774 1673001 1649865 512 4 17016 24906 183642 287796 512 8 38138 42136 682649 452692 512 16 53923 91169 835334 736750 512 32 77929 78107 895230 967855 512 64 98292 142938 1426135 1848401 512 128 98405 117049 1252318 1251589 512 256 95431 204467 2160868 1551867 512 512 108083 173270 2178404 2207515 1024 4 24985 26192 464179 509195 1024 8 39601 46674 671423 593653 1024 16 72556 89872 1041758 1317957 1024 32 85263 108645 1331440 1041758 1024 64 98830 189557 1943594 1786736 1024 128 135754 207699 1495042 1539522 1024 256 133422 203131 1815435 1701108 1024 512 133892 190719 1805514 1790460 2048 4 26775 23826 353047 359866 2048 8 45413 51097 643016 714826 2048 16 67566 61564 1008941 924662 2048 32 104761 105944 1334088 614101 2048 64 126646 156622 833181 1444461 2048 128 90093 167413 1280778 1568134 2048 256 110440 145807 794128 1310279 2048 512 158773 173573 1875611 1503891 4096 4 26900 31161 307575 453392 4096 8 32427 45180 607538 645039 4096 16 71955 79970 822995 763624 4096 32 97440 108523 1040901 872038 4096 64 147183 150971 1079828 1076783 4096 128 158300 181127 1119150 1121562 4096 256 134745 229930 1680050 1102559 4096 512 189542 244331 1225662 1158078 8192 4 26846 25546 479818 502358 8192 8 48437 51453 561747 665527 8192 16 73394 78339 851377 1049831 8192 32 101712 130114 1415798 1546774 8192 64 125214 150596 1673162 1734131 8192 128 149227 182319 1317888 1808330 8192 256 179558 176251 1638690 1685556 8192 512 140216 238778 1803963 1840095 16384 4 30205 28407 441389 462132 16384 8 53303 56889 789209 779859 16384 16 68077 79729 747716 838658 16384 32 101581 112477 1218866 1157228 16384 64 132806 168544 1397936 1402358 16384 128 153794 178428 1507673 1593022 16384 256 160374 212244 1832871 1845224 16384 512 176954 214391 1562736 1950274 32768 4 29729 32894 440696 455293 32768 8 48095 53685 721699 761671 32768 16 77247 90783 1084460 1000823 32768 32 96869 115677 1172419 1258658 32768 64 125967 137821 1230817 1074994 32768 128 155637 181138 1419386 1595792 32768 256 158460 197180 1386188 1559859 32768 512 166169 217448 1788735 1614122 65536 4