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: Sat Aug 22 02:25:58 2026 Auto Mode Machine = Linux oleg418-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-oleg418-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 1226 4396 171985 576282 64 8 5641 11204 760859 587635 64 16 1702 29172 267684 969761 64 32 2293 18528 1255511 546928 64 64 4208 40896 1452528 1518251 128 4 2091 3512 612303 561694 128 8 6729 26788 681476 38519 128 16 4120 15423 615109 809997 128 32 11478 49191 1359835 1038825 128 64 3742 35175 1391557 1281909 128 128 13796 54170 1543594 1858934 256 4 4373 8232 278908 409542 256 8 7413 10707 855703 335984 256 16 7913 25649 382685 522297 256 32 13828 13963 1163562 823544 256 64 7241 15647 1148625 1148625 256 128 16467 18706 1481420 507725 256 256 14722 84434 363634 2000242 512 4 2808 10247 395936 502946 512 8 10143 9642 207289 755144 512 16 21302 28668 826971 388487 512 32 17611 40302 925717 872320 512 64 17869 21509 1270094 291904 512 128 28702 59923 1055894 412596 512 256 30651 102997 739795 1594501 512 512 36469 55417 1712772 1695195 1024 4 4703 4354 262355 505420 1024 8 8907 8496 863343 506433 1024 16 11885 10427 832550 559254 1024 32 12241 18502 197000 1010864 1024 64 23361 27798 1307525 1076755 1024 128 27872 19898 754587 1019987 1024 256 36781 89122 1053512 861957 1024 512 44898 84052 1638796 930088 2048 4 4883 5748 206952 164153 2048 8 8710 8606 465887 452893 2048 16 19059 25713 653684 1029251 2048 32 17121 38843 429179 367219 2048 64 17178 46354 794422 632505 2048 128 43484 60169 1279252 1004341 2048 256 19620 42420 1178995 1449336 2048 512 43154 34436 456527 762478 4096 4 6586 9443 254997 161038 4096 8 13702 11812 417922 293032 4096 16 16344 16799 832325 720245 4096 32 15320 24307 793351 770922 4096 64 22835 34285 875594 561694 4096 128 37104 29124 682341 490898 4096 256 25303 38449 791815 331498 4096 512 26370 56466 1013154 665581 8192 4 6921 6483 239482 209310 8192 8 9516 10748 170995 386708 8192 16 13011 23152 343986 218991 8192 32 16991 27786 570989 279048 8192 64 19477 35612 562676 426533 8192 128 26703 31017 363295 421504 8192 256 23824 57917 1209134 1029542 8192 512 40344 46279 1199426 679223 16384 4 6887 6826 133294 148560 16384 8 7185 7830 284143 171178 16384 16 16433 16164 149324 437899 16384 32 16662 23664 618310 406932 16384 64 29135 40235 872552 554261 16384 128 33065 42905 1330643 881100 16384 256 37978 50789 1009484 920237 16384 512 30112 39748 1238661 816137 32768 4 6011 5842 306145 313521 32768 8 9868 12732 500779 465018 32768 16