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 Jul 8 09:29:45 2026 Auto Mode Machine = Linux oleg135-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-oleg135-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 5237 10246 763021 615952 64 8 10776 31448 877797 1392258 64 16 7071 29264 844652 703068 64 32 5823 61542 1336792 1083249 64 64 13710 85657 2444640 1143223 128 4 8599 19533 584950 270626 128 8 8364 31612 1040839 934004 128 16 17172 59560 1642783 1363288 128 32 27509 75607 1346196 1162547 128 64 27909 103050 1471662 1391557 128 128 22495 149014 1114289 1967960 256 4 11086 21351 591330 658008 256 8 22456 36035 984356 1016025 256 16 28786 59000 1084800 1089202 256 32 23279 95845 1479379 1202660 256 64 26756 120188 1391207 2228578 256 128 30552 128195 572721 1600674 256 256 24451 135593 1588832 2842047 512 4 16553 11555 676414 408281 512 8 27363 30616 1024169 884172 512 16 37128 51359 1293037 1201856 512 32 18313 54509 2032051 1108203 512 64 50333 134564 1551867 1434711 512 128 46117 132056 1610042 1614885 512 256 62211 103834 1848401 1614885 512 512 69060 136749 2187279 2360376 1024 4 16325 18107 645587 569865 1024 8 30183 28923 997019 981750 1024 16 34817 51903 1004951 1149368 1024 32 61185 87934 1530742 1292961 1024 64 68910 113249 1402756 1609925 1024 128 87282 145514 1246071 1363133 1024 256 95889 172621 1786736 1747480 1024 512 63808 154407 1599731 2160657 2048 4 18117 16708 836670 757102 2048 8 30750 35400 896671 980272 2048 16 44287 47810 1268110 996072 2048 32 62339 83442 1905146 1659632 2048 64 85330 139872 1894641 1513696 2048 128 75043 108653 1514764 1481839 2048 256 89793 138556 1882599 1871932 2048 512 78878 141536 2472773 1552545 4096 4 16953 19050 785121 623163 4096 8 30661 34266 1060629 1055157 4096 16 47384 54117 1046289 920244