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 Jun 5 07:14:58 2025 Auto Mode Machine = Linux oleg120-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-oleg120-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 7573 16108 147507 307907 64 8 10140 35437 474430 503814 64 16 7855 52328 752329 829001 64 32 7932 67875 1029254 901377 64 64 9772 123771 1452528 1562436 128 4 10703 16891 172527 311445 128 8 15644 37374 360605 210553 128 16 22971 55411 506097 848397 128 32 18812 70448 1065630 1076312 128 64 17121 90782 1332828 1319723 128 128 16641 70988 1663139 1727352 256 4 10860 18478 233787 516270 256 8 15692 24308 550691 340027 256 16 20419 51209 339061 690151 256 32 22235 85907 970126 1208072 256 64 20144 106313 1213534 1048775 256 128 13702 126982 205784 215662 256 256 8253 54455 1540948 1911233 512 4 15368 22935 296785 182209 512 8 18870 25840 522526 486758 512 16 29492 43880 457904 676201 512 32 29807 77073 276744 1166599 512 64 41813 107450 710192 1105920 512 128 47275 70042 1361057 1323315 512 256 45604 91216 1746197 1007827 512 512 60433 141553 604447 1672748 1024 4 16558 22397 222608 311708 1024 8 26501 35400 420670 524812 1024 16 35253 53584 522768 523788 1024 32 47980 62435 420876 524877 1024 64 66171 106734 1017811 1159609 1024 128 48897 118215 1590254 1475525 1024 256 57329 178238 1903117 1512415 1024 512 38527 150143 1875690 1729884 2048 4 19969 25371 445702 230349 2048 8 28241 26771 584635 455317 2048 16 40531 60276 716078 736966 2048 32 45056 78018 928359 1028635 2048 64 54014 69251 691631 887407 2048 128 78996 146671 1143372 703988 2048 256 65634 136887 737789 1025565 2048 512 90946 149424 1815744 758506 4096 4 18519 20595 378104 466504 4096 8 35287 32866 522171 532101 4096 16 47649 58584 498475 511491 4096 32 75207 73008 806611 680072 4096 64 69296 101121 469885 1162309 4096 128 93296 118735 878774 1596967 4096 256 92585 99880 779598 1134598 4096 512 98480 119875 1363610 773421 8192 4 19446 22394 348791 304206 8192 8 26778 33204 362208 304421 8192 16 40596 48479 779436 650311 8192 32 55708 73234 1020188 904589 8192 64 62068 97880 1159164 916117 8192 128 66048 73545 663535 813675 8192 256 92383 82801 1257778 676628 8192 512 89054 112727 1392446 1462066 16384 4 18136 20157 198699 327373 16384 8 28209 33393 520985 522848 16384 16 45535 45738 759500 423710 16384 32 72070 76709 1034919 756033 16384 64 76863 91663 1044562 1204341 16384 128 94812 102517 942204 1436810 16384 256