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 Sep 29 15:45:40 2026 Auto Mode Machine = Linux oleg122-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-oleg122-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 3444 19365 546928 801764 64 8 3035 10327 799377 754443 64 16 3774 39929 484710 754443 64 32 4465 30090 1204796 842003 64 64 5092 51903 1452528 1429325 128 4 2915 7021 476031 24801 128 8 2207 19423 853794 460514 128 16 3422 20796 1022989 388809 128 32 8421 86260 1642783 533771 128 64 8197 61540 1000121 1030846 128 128 5474 66876 1504659 1561553 256 4 7504 5315 555248 278546 256 8 5328 7642 70856 598249 256 16 10752 47931 921029 1048775 256 32 18292 47075 1300235 991629 256 64 7241 106927 1112909 1610276 256 128 10478 42681 2081678 557844 256 256 27714 123677 1938842 2607399 512 4 5344 3823 158558 483035 512 8 11985 15166 418955 455476 512 16 9467 5693 946109 731480 512 32 11431 44248 782951 973559 512 64 19345 26241 1296159 1142396 512 128 8518 63769 895230 1410215 512 256 23381 78504 1350783 1542947 512 512 20337 21567 697505 489532 1024 4 3186 9216 380529 455708 1024 8 16978 21034 630888 915809 1024 16 24796 37128 511256 773476 1024 32 35566 77482 1154621 966071 1024 64 31255 44825 1034481 727244 1024 128 16209 64614 1032244 997019 1024 256 20190 59569 992182 618710 1024 512 29249 42933 911726 888894 2048 4 7001 4779 194788 472654 2048 8 15490 13546 374945 377582 2048 16 13689 22816 796263 847316 2048 32 27525 38251 1164925 537683 2048 64 37475 50503 876720 748851 2048 128 28334 41970 1390450 303909 2048 256 27722 50277 1552826 208981 2048 512 13474 28913 159801 341727 4096 4 6403 6085 169381 179295 4096 8 7472 10741 251289 302890 4096 16 9457 11744 245782 343077 4096 32 23820 36950 714464 475122 4096 64 20451 30240 315807 637902 4096 128 36725 38005 223656 264685 4096 256 45196 36718 1701009 250184 4096 512 37026 76897 865405 487790 8192 4 5707 6199 363215 274255 8192 8 10956 2421 352632 373618 8192 16 16893 19222 547227 644323 8192 32 17774 29510 532710 546278 8192 64 22229 18880 362670 296565 8192 128 22022 33381 893928 609390 8192 256 31987 39221 298902 542518 8192 512 30861 51231 910823 758462 16384 4 5402 6275 398947 329924 16384 8 8888 10252 523565 272974 16384 16 14554 16404 317562 472936 16384 32 12448 19190 515058 407157 16384 64 25946 27794 927015 631341 16384 128 32669 38815 419348 784300 16384 256 30400 32802 854265 860361 16384 512 35105 43724 842978 698767 32768 4 4879 5470 164607 172685 32768 8 6198 7598 528737 292911 32768 16 10551 17802 601036 256597 32768 32