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 03:38:48 2025 Auto Mode Machine = Linux oleg108-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-oleg108-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 12429 22906 555990 395452 64 8 15348 38714 538156 566551 64 16 16597 59535 842003 821391 64 32 14305 60095 929467 955947 64 64 19405 114480 1279447 1828508 128 4 15267 24753 348888 354415 128 8 22015 44803 615109 522346 128 16 28144 64320 921183 789741 128 32 27171 82738 1040839 830034 128 64 39383 139890 224181 1939522 128 128 35400 128659 2326073 1579934 256 4 19837 25259 363634 398005 256 8 27462 41933 294272 622890 256 16 42582 65556 782721 785584 256 32 36545 91719 898674 1235882 256 64 55433 120634 1241598 1262029 256 128 55880 158326 1829808 1506359 256 256 61582 173329 1952947 1956506 512 4 21799 27780 338409 488530 512 8 33464 46753 651383 597385 512 16 56115 72029 767559 751971 512 32 68984 92584 1296941 1533034 512 64 81203 142379 1254513 1344020 512 128 87147 131579 1520013 1505098 512 256 77706 185980 1795846 1734911 512 512 95772 195193 1940253 2055390 1024 4 23678 26112 319903 399836 1024 8 43130 44571 740408 699414 1024 16 57710 67885 861957 876737 1024 32 70522 99552 1048113 1210598 1024 64 95015 130996 1517224 1597351 1024 128 99455 151638 1396825 1542286 1024 256 105207 173647 1573360 1695735 1024 512 112096 181914 1673273 1852232 2048 4 23488 24320 367157 393387 2048 8 41347 45351 613926 621746 2048 16 56863 69794 952552 936456 2048 32 80544 111353 1171598 1145354 2048 64 104271 145270 1379066 1323808 2048 128 112706 148914 1476744 1537539 2048 256 126130 190884 1658350 1726687 2048 512 126170 169147 1807720 1804681 4096 4 23204 29904 450799 465039 4096 8 41743 49373 628314 608076 4096 16 65939 83045 1037005 893305 4096 32 89418 95238 1123101 1132429 4096 64 79822 141382 1405558 1329937 4096 128 119731 171783 1711516 1429653 4096 256 140626 202311 1665070 1678573 4096 512 160030 201375 1807492 1806922 8192 4 25673 26751 430838 474950 8192 8 42342 49906 734829 736435 8192 16 67524 73158 825304 882947 8192 32 88527 106772 1225085 1162498 8192 64 108278 136802 1332247 1475755 8192 128 139412 170854 1621522 1576293 8192 256 155936 186529 1708776 1626665 8192 512 141110 185134 1922566 1852096 16384 4