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: Mon Sep 7 22:13:59 2026 Auto Mode Machine = Linux oleg330-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-oleg330-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 1768 5037 647135 515423 64 8 4037 22439 520419 679917 64 16 5230 32857 998622 404998 64 32 2270 5872 1163036 1083249 64 64 5230 69348 1255511 1879725 128 4 2878 3949 612303 569439 128 8 2918 7954 914904 859260 128 16 7811 45085 1114289 1024942 128 32 5875 66086 1114289 613002 128 64 9409 81223 1231904 1266785 128 128 8747 87142 1332828 1939522 256 4 3596 4720 557554 503913 256 8 3626 7220 844929 565185 256 16 8038 31631 853662 356038 256 32 12989 45397 910872 1023775 256 64 7587 44291 708831 1142514 256 128 7392 21554 1019886 648079 256 256 10931 76812 1561112 1884399 512 4 6008 4782 570107 509026 512 8 7250 13447 749608 282533 512 16 14953 17087 471372 489532 512 32 8595 9854 186984 552221 512 64 7828 18465 1009722 1118011 512 128 10738 68568 615359 690108 512 256 19799 66131 1080328 1358474 512 512 8184 47614 710192 1426135 1024 4 4088 5532 294927 142477 1024 8 5242 6218 678637 247038 1024 16 13064 13739 551428 220925 1024 32 15771 25660 1450607 1071116 1024 64 22924 51717 1365299 1187831 1024 128 28525 54789 678637 1354107 1024 256 34270 77811 1630707 883409 1024 512 31702 47034 1003073 372768 2048 4 6759 6079 311254 202651 2048 8 5971 8481 863066 348012 2048 16 14307 12354 1009416 962910 2048 32 14982 22359 505177 472420 2048 64 33504 44041 488903 698039 2048 128 39503 53443 328627 267043 2048 256 17750 31044 246781 1426234 2048 512 38195 45797 1019479 1540849 4096 4 5989 8694 357766 236650 4096 8 11062 14605 441371 401138 4096 16 13574 13890 697438 254155 4096 32 24483 27200 576741 490253 4096 64 22617 27587 968599 766896 4096 128 41244 46747 1045143 560484 4096 256 36638 104190 479619 686788 4096 512 27735 39165 728954 849823 8192 4 5280 5963 392692 254432 8192 8 2098 8780 482819 318532 8192 16 17256 17104 542227 634051 8192 32 28708 29927 480805 565938 8192 64 19502 29035 470669 387309 8192 128 29032 46311 604076 466674 8192 256 25661 35800 904779 735962 8192 512 29344 35483 850766 563100 16384 4 4788 4880 315167 254698 16384 8 8463 11775 531584 347524 16384 16 14709 21198 746117 618471 16384 32 15259 34426 793565 602687 16384 64 28222 27370 308689 593818 16384 128 26339 40967 329181 421465 16384 256 25098 28891 562850 804594 16384 512 25433 40101 511424 651945 32768 4 5109 5123 186390 285167 32768 8 9302 11827 385166 428463 32768 16 14500 17250 497457 414890 32768 32 21354 21516 744423 570980 32768 64