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: Wed Apr 30 23:31:43 2025 Auto Mode Machine = Linux oleg453-client.virtnet 3.10.0-7.9-debug #1 SMP Sat Mar 26 23:2 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-oleg453-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 7988 16260 340306 359444 64 8 5990 30216 546928 621657 64 16 1952 56089 811459 780776 64 32 11666 80398 1002351 983980 64 64 7926 63179 1638743 1526887 128 4 11330 23455 351630 400110 128 8 8771 41130 280086 576780 128 16 12491 61959 814915 985435 128 32 15071 93161 1291158 1391557 128 64 23242 97794 314547 1000121 128 128 13523 44491 1684006 1598754 256 4 12323 18455 341433 329894 256 8 21317 46529 412374 73797 256 16 21315 34233 388501 708831 256 32 20000 88799 847597 717355 256 64 32770 103395 1514860 573946 256 128 28816 150303 1642294 995306 256 256 24187 118399 1662639 2000242 512 4 12841 12351 97242 324060 512 8 18355 28226 541227 581846 512 16 26496 38787 869143 778128 512 32 30651 104894 1199171 1239310 512 64 28923 99150 1015451 1130370 512 128 33277 79850 1442420 1446306 512 256 46297 102116 1753325 1624659 512 512 42327 51277 1795846 2143612 1024 4 19571 21754 390991 365597 1024 8 33124 26207 365069 486913 1024 16 52021 55498 82090 975063 1024 32 76258 65201 866304 938625 1024 64 71131 150743 489521 910953 1024 128 65127 127888 1073525 1204825 1024 256 70586 150253 1665486 824558 1024 512 68835 170924 2068064 1954207 2048 4 20153 22916 321013 372555 2048 8 28761 37785 539236 631900 2048 16 55084 63015 748525 1165557 2048 32 55421 99143 464828 893964 2048 64 73507 98258 783481 864891 2048 128 79432 148159 1520394 1622945 2048 256 68428 171538 1044266 1445191 2048 512 80477 160638 1369829 1713940 4096 4 18792 19897 257011 297565 4096 8 30444 35294 349072 254838 4096 16 42731 63265 804421 748682 4096 32 66373 91131 923757 940290 4096 64 64556 100122 992034 814450 4096 128 87030 125228 1125308 1335935 4096 256 100043 130733 1456685 1153800 4096 512 78236 143886 1213284 1779226 8192 4 18698 18712 293147 304716 8192 8 25413 27150 374612 403544 8192 16 32620 49964 389333 402835 8192 32 34482 41031 813984 1007504 8192 64 62590 92484 806153 1020945 8192 128 65582 78604