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 15:42:55 2026 Auto Mode Machine = Linux oleg319-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-oleg319-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 2403 12274 653436 271200 64 8 4799 21716 866463 718114 64 16 7175 35692 1083249 763021 64 32 5125 35419 1392258 1087638 64 64 2495 87075 1599680 1553394 128 4 8465 13117 692017 609522 128 8 9545 17210 514339 785122 128 16 9522 38321 819893 819893 128 32 10638 74889 303178 1067750 128 64 8889 58503 1377278 1622919 128 128 12186 17178 1579934 2066432 256 4 9573 7320 666586 621448 256 8 13915 28271 573946 489442 256 16 19164 26154 1163562 1032636 256 32 15313 83198 1332507 1266495 256 64 18199 58062 1062263 1019886 256 128 11805 124034 1619994 1549845 256 256 23818 70716 1561112 663292 512 4 8252 10430 516743 259771 512 8 7351 10918 107628 408981 512 16 9678 12697 1038532 873740 512 32 14781 54614 859060 687237 512 64 21197 56338 697505 701378 512 128 36723 61171 1640796 1414860 512 256 22298 95576 1323315 1537424 512 512 38493 142068 1406520 2235086 1024 4 10031 10203 635274 353704 1024 8 18798 16412 904621 433187 1024 16 19479 25569 676286 853394 1024 32 38393 61665 1309518 1111877 1024 64 43541 65691 1544504 1255175 1024 128 19848 55483 1024121 334530 1024 256 20017 75437 1164956 170809 1024 512 32023 71448 1803239 1488307 2048 4 10378 10755 526640 415076 2048 8 10357 14124 589490 204674 2048 16 12348 27309 1168252 344026 2048 32 26937 31271 585312 843158 2048 64 20909 45732 591397 947300 2048 128 27829 71932 1633127 1010960 2048 256 39211 77338 942518 641001 2048 512 35093 54329 486356 1593737 4096 4 6099 7490 269882 149739 4096 8 12332 12964 590276 429209 4096 16 18293 22026 728831 640709 4096 32 26425 25661 636909 622779 4096 64 33636 46933 1472290 885614 4096 128 27626 36012 1036942 1130194 4096 256 29752 56412 626686 788580 4096 512 29739 64386 572704 1526040 8192 4 8102 2154 355665 329710 8192 8 15124 12179 691428 309433 8192 16 20736 18834 592329 553664 8192 32 22613 26139 583388 712609 8192 64 27317 43029 620931 488315 8192 128 29563 39104 922512 1219606 8192 256 39072 57042 894905 761336 8192 512 40093 50065 480974 480610 16384 4 7434 11065 318432 311578 16384 8 13667 13769 570632 522082 16384 16 17223 20874 465059 466141 16384 32 30684 25680 763432 551149 16384 64 29705 34646 314103 221794 16384 128 28482 40989 448297 360199 16384 256 35328 45178 719991 396142 16384 512 38328 50221 303143 912042 32768 4 6605 7125 240433 256579 32768 8 10371 11572 671613 366970 32768 16 17439 23790 866052 523358 32768 32 25248 31760 479814 375529 32768 64 19848 27416 472107 538611 32768 128 30323 43147 758293 453699 32768 256 37859 49575 984140 1030927 32768 512