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: Fri Oct 24 09:00:00 2025 Auto Mode Machine = Linux oleg241-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-oleg241-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 5617 21375 258159 520419 64 8 8103 35574 998622 874936 64 16 3355 54242 769584 571375 64 32 10361 77856 1124074 673098 64 64 4551 89633 926260 1210227 128 4 14984 22702 617941 540217 128 8 20755 40354 603357 753179 128 16 10925 32931 1022989 766076 128 32 4764 79550 955616 847059 128 64 5804 90967 1074159 1266785 128 128 24372 108397 1336145 2132084 256 4 9917 4384 75921 742146 256 8 7244 5665 52053 721210 256 16 9237 28381 66081 954602 256 32 18310 92557 1549845 738065 256 64 8221 69792 1407621 1361224 256 128 22155 69887 1534342 1391207 256 256 29387 162742 1447470 2049885 512 4 8528 3602 85605 491324 512 8 16391 31894 336817 713021 512 16 21382 24266 1108203 293741 512 32 15736 21784 1556366 130642 512 64 12132 17587 1580419 1112797 512 128 17689 49183 1296941 1442420 512 256 22753 178528 1528669 71388 512 512 31708 225154 1546280 2189509 1024 4 4981 8964 617287 594722 1024 8 19694 27640 839384 761275 1024 16 26462 13645 293576 1076755 1024 32 18842 34181 1104727 1197769 1024 64 20421 107460 1304348 230011 1024 128 29655 35432 257603 1312720 1024 256 23381 178772 1369216 1528563 1024 512 69002 61937 1597351 1796451