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 Oct 24 09:06:19 2025 Auto Mode Machine = Linux oleg215-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-oleg215-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 2614 6241 481234 546928 64 8 3465 29261 484710 608965 64 16 5168 42698 901377 842003 64 32 3927 58986 666414 688639 64 64 6200 63809 983980 603489 128 4 8416 13475 299124 486381 128 8 10061 31031 402510 579270 128 16 6518 45552 826202 633995 128 32 13563 60262 1123617 790905 128 64 11783 81630 940549 1243315 128 128 12419 83941 1319723 1521718 256 4 6812 13122 532133 557844 256 8 9247 12450 715443 658008 256 16 8489 47283 785584 839644 256 32 20166 32173 826078 947860 256 64 16311 77622 1260547 1012194 256 128 17975 31734 1445521 1044693 256 256 17007 87912 1704877 2019049 512 4 13907 15144 541227 485767 512 8 16283 31928 601568 680055 512 16 22614 50573 975328 831132 512 32 25317 39351 1198502 1032044 512 64 22298 50813 275997 1096322 512 128 21640 44115 1430887 1267845 512 256 34924 72143 1438555 1240025 512 512 28148 109544 1655979 2024389 1024 4 14104 10749 591853 571762 1024 8 21082 26726 852547 595381 1024 16 21901 26859 960454 704693 1024 32 33577 41057 610617 900637 1024 64 33295 80973 1291406 1121751 1024 128 26416 99319 1330203 1204825 1024 256 40904 73563 1026078 1297649 1024 512 38645 126924 1724328 1540074 2048 4