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 Jun 10 03:37:59 2025 Auto Mode Machine = Linux oleg131-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-oleg131-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 20592 25186 328238 344233 64 8 22955 57043 537079 551422 64 16 38006 73568 889431 727850 64 32 46742 129816 866463 1734015 64 64 36657 182385 1526887 1484662 128 4 24316 25261 312351 556454 128 8 29969 47111 677178 659704 128 16 40074 81519 843068 767171 128 32 37646 55560 1032829 1684006 128 64 70025 187664 1424795 1142750 128 128 84270 163043 2211113 1579934 256 4 21294 26400 505812 412215 256 8 42043 52278 515279 740100 256 16 39542 107796 797250 731528 256 32 66875 129151 1084800 739590 256 64 97863 174285 1398455 1570244 256 128 111885 233584 1481420 1755037 256 256 109211 198443 1718521 1718521 512 4 26957 31821 559560 209760 512 8 38420 55262 608041 829847 512 16 74159 98613 815353 946526 512 32 101951 161007 1148506 1062161 512 64 121355 163520 1501940 1551867 512 128 121844 230026 1875849 1829505 512 256 147423 200796 1902438 1723770 512 512 148534 234985 2681653 1983258 1024 4 27967 27144 354551 392313 1024 8 41763 48664 572677 673635 1024 16 73807 98764 928479 891292 1024 32 103843 126171 1114185 1224752 1024 64 115366 197535 1026078 1203137 1024 128 138530 210777 1575091 1628234 1024 256 146827 287081 2275110 1664841 1024 512 178928 274828 1893052 2179295 2048 4 25759 28994 344426 359745 2048 8 43249 54520 573319 620803 2048 16 73007 71605 946465 988962 2048 32 101966 129015 1257160 1042239 2048 64 139368 159067 1555075 1460921 2048 128 106037 206514 1668983 1406616 2048 256 151975 211967 1569280 1630647 2048 512 160138 255585 1681397 2098276 4096 4 26953 29185 410091 358947 4096 8 46648 53792 604843 628981 4096 16 74548 87344 791195 930260 4096 32 97068 130533 1120318 1150555 4096 64 130683 182605 1140321 1456068 4096 128 163037 193718 1675299 1606224 4096 256 165493 229994 1946770 1421726 4096 512 170361 241240 1809206 1638392 8192 4 24696 29570 391270 397434 8192 8 49943 52373 580001 624474 8192 16 80556 85825 962516 832603 8192 32 112139 125841 1227273 1304479 8192 64 142869 164652 1454269 1320674 8192 128 179165 211429 1339466 1605009 8192 256 175301 227637 1819630 1517334 8192 512 186219 240073 1738518 1730898 16384 4 28430 30776 424236 413791 16384 8 50105 53715 668134 678564 16384 16 75725 86583 910218 875298 16384 32 114538 137757 1218240 1140954 16384 64 145503 177105 1369901 1414248 16384 128 168769 189908 1480837 1541009 16384 256 170864 232654 1626042 1807037 16384 512 183420 208469 1739477 1823677 32768 4