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 22:26:26 2026 Auto Mode Machine = Linux oleg116-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-oleg116-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 4700 5795 608965 444572 64 8 6855 29949 666414 344233 64 16 7750 28304 1421755 467815 64 32 6595 21679 1105556 821391 64 64 6621 56586 1492919 1017549 128 4 6591 9454 574312 526444 128 8 4793 14692 93779 237049 128 16 4633 9369 301307 771581 128 32 8240 23134 715059 1057236 128 64 11532 50119 1093856 877518 128 128 5299 76643 887675 1471662 256 4 5745 11827 302564 40448 256 8 3979 8285 773697 615393 256 16 8440 20168 985259 955451 256 32 6071 18983 663292 1044693 256 64 17644 54397 952062 536654 256 128 10812 27121 1552085 1262029 256 256 18503 60208 1219045 330809 512 4 8105 14155 350449 309177 512 8 8383 14425 399620 86151 512 16 7977 17071 583903 335974 512 32 6117 17458 1101383 273188 512 64 20306 27369 323425 771143 512 128 10906 29950 51312 188859 512 256 18219 50378 1459080 929322 512 512 15278 85319 806171 1712772 1024 4 3897 3276 269398 251670 1024 8 10833 9024 737738 147255 1024 16 13935 11788 506672 393860 1024 32 11233 39904 974400 796277 1024 64 17511 43927 1073525 827258 1024 128 9943 21708 436666 156238 1024 256 24188 81038 799985 494196 1024 512 30633 42470 243924 551995 2048 4 6502 8600 113036 169591 2048 8 5416 9170 145083 251632 2048 16 7255 10628 161056 203761 2048 32 7688 17463 338455 264429 2048 64 14234 19901 330740 98660 2048 128 31509 32266 1266614 408134 2048 256 17336 30628 207562 832857 2048 512 38944 109238 620041 361577 4096 4 8482 5045 171774 205831 4096 8 6794 7038 251997 173193 4096 16 18121 41442 640805 631408 4096 32 36421 30991 457705 473747 4096 64 29597 20936 1069210 306193 4096 128 25275 20872 535068 342188 4096 256 18032 35366 583638 1649562 4096 512 18801 34686 498287 368312 8192 4 6268 4119 181898 101717 8192 8 7696 9699 842195 762400 8192 16 19300 15947 519768 251127 8192 32 18373 17192 244238 266346 8192 64 22561 20388 439558 338316 8192 128 31922 64896 478929 695304 8192 256 34303 47814 977912 762045 8192 512 24492 30033 766687 582933 16384 4 8057 5667 239875 168962 16384 8 10456 15136 333653 163262 16384 16 12419 18434 461118 452257 16384 32 21002 22951 781268 555072 16384 64 23359 30585 731495 716112 16384 128 28474 34026 753422 632264 16384 256 25768 42791 361191 371999 16384 512 32026 44764 1104196 619318 32768 4 5599 5358 244860 200356 32768 8