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 Aug 27 11:35:57 2026 Auto Mode Machine = Linux oleg419-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-oleg419-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 2697 7923 516414 371894 64 8 1462 16736 703068 551422 64 16 2003 15533 253048 598110 64 32 2103 47369 1183548 831569 64 64 3462 59535 292156 1690338 128 4 2187 6122 533241 284388 128 8 4946 23272 266595 576161 128 16 3501 29843 581781 396271 128 32 6738 61183 1196221 978253 128 64 5299 18918 1057236 1065630 128 128 2570 14288 1022989 69643 256 4 2658 5294 579209 463657 256 8 3659 8830 474937 154766 256 16 9908 23997 951219 527687 256 32 9896 19838 1147398 1004618 256 64 8690 17632 1237306 211582 256 128 9102 15521 1248819 1347557 256 256 9721 18548 1479379 1600674 512 4 2949 4013 530530 378157 512 8 5743 9081 112258 96621 512 16 8797 16562 321585 502358 512 32 7920 29614 791318 942786 512 64 13413 45886 1380303 796306 512 128 14277 73700 1361920 524056 512 256 15529 62023 1245780 709957 512 512 24559 43305 1667552 2160868 1024 4 3809 4474 155031 588125 1024 8 12752 19825 749583 764799 1024 16 18008 17097 119239 92153 1024 32 27853 19580 567906 533615 1024 64 27755 50700 749060 1171629 1024 128 32740 27157 619513 464581 1024 256 16531 48434 210045 1575668 1024 512 28234 66562 1032244 692758 2048 4 5014 11982 292107 301044 2048 8 10115 10916 580997 391451 2048 16 20773 17829 864543 742829 2048 32 17949 34912 1174964 1052971 2048 64 19818 29273 1454489 1198237 2048 128 37481 62368 1467911 147743 2048 256 37953 55272 699460 1393382 2048 512 33778 63964 892015 336572 4096 4 10745 5273 311174 402086 4096 8 8142 12321 226965 205550 4096 16 8487 12769 668196 362598 4096 32 14190 28189 441803 529804 4096 64 20103 36969 502206 929404 4096 128 21787 32496 593703 273870 4096 256 15643 45192 1619091 683019 4096 512 24387 33188 965551 457766 8192 4 1743 6777 303746 212204 8192 8 12433 23888 595305 455362 8192 16 21185 22092 638255 397379 8192 32 19649 56879 1153831 722331 8192 64 33648 32983 1045550 495705 8192 128 29487 39844 778112 559907 8192 256 36232 43936 726240 620606 8192 512 31525 51715 1242900 469807 16384 4 5704 6930 440772 146289 16384 8 8016 10410 520441 437910 16384 16 13255 17024 540992 398676 16384 32 18091 27762 739246 603285 16384 64 24187 32309 437383 448903 16384 128 23536 31576 489745 311506 16384 256 21471 33759 493880 448113 16384 512 24738 37836 971014 833834 32768 4 6128 6810 194971 144255 32768 8 12373 9422 322383 261622 32768 16 10940 12733 342020 310750 32768 32