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: Fri Jul 25 06:52:55 2025 Auto Mode Machine = Linux oleg229-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-oleg229-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 10136 19606 271200 236131 64 8 11463 31525 367817 385790 64 16 18901 50157 688639 621657 64 32 12213 69708 901377 866463 64 64 26699 64391 645579 2133730 128 4 12883 19349 247086 241094 128 8 18591 26026 586868 376538 128 16 21455 48891 1093856 303350 128 32 31295 85287 789741 848397 128 64 17967 93845 1229084 1152564 128 128 38049 137208 1406136 1705404 256 4 12056 15212 274698 241517 256 8 24144 35281 435276 397416 256 16 25609 60445 630572 364622 256 32 37069 86656 748875 969251 256 64 43596 124393 1157291 1089202 256 128 52159 84488 1169901 1332507 256 256 52182 159621 1413179 1967260 512 4 18155 19825 252710 184099 512 8 28125 22867 443254 376500 512 16 19844 61010 648041 595397 512 32 39844 90988 927716 749608 512 64 53804 109259 806474 811349 512 128 61971 131314 1351633 1047141 512 256 71981 84740 1537424 1458090 512 512 35545 172269 1840480 2225819 1024 4 11859 18490 268287 234636 1024 8 21501 31816 239076 185345 1024 16 38460 32966 632467 614637 1024 32 44512 76917 914249 549312 1024 64 68738 109764 1312720 1027060 1024 128 64474 95780 910953 1073257 1024 256 46738 80988 1442326 1376236 1024 512 79626 124333 1720874 1096268 2048 4 14031 15045 228724 224609 2048 8 22103 24756 470480 228014 2048 16 37043 44486 639998 574009 2048 32 42995 91168 958718 301530 2048 64 46955 90598 1196235 1057248 2048 128 50366 108688 1320349 1056727 2048 256 57907 152675 1012270 1368956 2048 512 100107 151391 1779262 1391351 4096 4 16013 17198 251396 261625 4096 8 27026 36105 472327 408783 4096 16 33602 55024 695321 564017 4096 32 46554 65935 584313 814953 4096 64 50327 88529 1109752 989122 4096 128 80528 113164 1394605 1235534 4096 256