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 2 18:22:55 2026 Auto Mode Machine = Linux oleg359-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-oleg359-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 2799 6556 361867 592827 64 8 5998 4376 727850 566551 64 16 1971 28636 901377 866463 64 32 4311 27327 1101022 335206 64 64 7140 51525 688639 1188789 128 4 3124 5338 576780 161377 128 8 3689 8683 785122 617941 128 16 12587 25161 595328 390506 128 32 10103 36229 826202 706589 128 64 3907 36251 826202 107206 128 128 5084 75384 1346196 1732927 256 4 7110 9635 450054 367744 256 8 7655 20898 782721 80606 256 16 12157 9338 1089202 334206 256 32 6090 18658 183269 1084800 256 64 15874 41177 1027695 988889 256 128 15228 68764 897923 802014 256 256 8915 54629 1319408 1967260 512 4 4782 5940 549396 514021 512 8 8942 11696 195193 674502 512 16 9266 12436 779258 1003588 512 32 10142 19256 1222379 1118011 512 64 25361 76600 1496706 1230786 512 128 7190 60778 876593 1488408 512 256 12212 42891 269486 1662389 512 512 23680 83197 1207261 2235086 1024 4 3612 6956 364418 367694 1024 8 13465 19855 952573 522196 1024 16 18834 35709 1135391 952573 1024 32 10865 55818 1102176 413382 1024 64 36386 40659 1418508 343630 1024 128 31399 46284 105754 825034 1024 256 52531 49159 128932 265632 1024 512 23464 28040 1718120 1687075 2048 4 5282 6249 189523 248028 2048 8 12947 12078 541787 612045 2048 16 11430 29238 941176 186657 2048 32 18091 28144 385548 539948 2048 64 17893 42049 496734 524166 2048 128 19457 28002 381947 548919 2048 256 20050 28153 1428131 540084 2048 512 21409 67731 284917 1025565 4096 4 5655 6180 170212 117101 4096 8 13215 1330 722122 496243 4096 16 18746 23484 496372 639184 4096 32 25985 35832 867810 495642 4096 64 25170 23344 1498095 800150 4096 128 27541 41431 501107 228077 4096 256 32354 56728 1231548 638210 4096 512 30488 81870 1809968 1853314 8192 4 6446 6332 382162 119888 8192 8 9244 11233 422416 227884 8192 16 16142 17501 282931 268063 8192 32 21234 18952 347739 353561 8192 64 22514 29808 265293 330376 8192 128 22081 33094 369488 419497 8192 256 18190 69971 517140 360467 8192 512 35403 63170 431542 854766 16384 4 5899 10341 204474 188123 16384 8 13457 8490 348959 208309 16384 16 15903 17969 461936 535900 16384 32 18698 28576 507762 336364 16384 64 23598 34255 309793 479456 16384 128 20432 33061 412447 597624 16384 256 25917 37653 709451 486227 16384 512 35129 31889 1046439 628724 32768 4 4901 6061 192147 231492 32768 8