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 Jul 16 16:21:09 2026 Auto Mode Machine = Linux oleg104-client.virtnet 4.18.0rh8.10-debug #2 SMP Mon Jul 14 01 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-oleg104-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 2466 4092 385790 703068 64 8 7121 29466 821391 842003 64 16 9510 31174 789967 1017549 64 32 5850 24777 242312 1066042 64 64 11951 70403 1183548 1279447 128 4 9036 13849 695603 524387 128 8 6497 21835 870405 843068 128 16 12170 49173 1015251 992724 128 32 10542 82801 1185654 1032829 128 64 16379 70531 1346196 1254941 128 128 13227 98674 1755594 1852520 256 4 9573 13679 506050 445202 256 8 7756 23505 970126 907792 256 16 14999 32740 1185399 977189 256 32 28444 64451 1552085 710708 256 64 15237 82129 1391207 973645 256 128 26772 105219 1673001 1272498 256 256 28060 103226 988889 825443 512 4 13520 13610 453074 598217 512 8 15991 18111 232718 520879 512 16 14573 15965 428399 686358 512 32 15084 11736 390252 569653 512 64 10514 80784 1354190 1257451 512 128 43925 97952 1672748 559560 512 256 32925 115887 1455126 2244430 512 512 36404 127713 912733 390181 1024 4 12305 14351 339394 216395 1024 8 18241 21092 672369 652254 1024 16 32634 35507 770010 989212 1024 32 39864 58237 1273410 876022 1024 64 40159 80750 949834 1031252 1024 128 63330 82435 1883092 1396825 1024 256 44725 49980 1131503 926676 1024 512 45173 119751 977950 1160862 2048 4