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: Thu Jul 24 09:50:35 2025 Auto Mode Machine = Linux oleg107-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-oleg107-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 6376 8621 234481 227718 64 8 7451 27492 484710 335206 64 16 5746 40324 581273 955947 64 32 5961 63870 926260 901377 64 64 11795 53732 821391 1492919 128 4 6629 15859 320748 266595 128 8 10335 29058 292922 389091 128 16 12246 48891 785122 566435 128 32 10837 36435 723735 847059 128 64 16274 67329 1048974 859260 128 128 21045 96754 627328 1642783 256 4 12722 15576 251709 229982 256 8 17296 23581 502028 325296 256 16 18000 43664 921029 1040643 256 32 22994 76255 573946 723153 256 64 30936 56650 1089202 947860 256 128 27254 102321 1304976 1254656 256 256 34403 67298 1224606 1439707 512 4