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 Sep 16 14:32:42 2026 Auto Mode Machine = Linux oleg345-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-oleg345-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 1307 5107 566551 571375 64 8 1740 26723 929467 712397 64 16 1904 6018 913649 913649 64 32 3779 6154 1163036 1033216 64 64 965 67297 1210227 1679761 128 4 2432 7060 662962 615109 128 8 6124 7899 934004 631014 128 16 4671 11069 1142750 785122 128 32 3754 38566 1436229 299124 128 64 4631 42967 1436229 1030846 128 128 6518 21480 976473 1710838 256 4 7611 8922 533455 522551 256 8 8595 11952 429530 1202660 256 16 4978 37482 566377 603630 256 32 7377 18693 1339154 1103757 256 64 10587 66065 1558845 1354356 256 128 5627 95453 1398455 1430119 256 256 10291 74334 1319408 1829808 512 4 6602 5978 361845 397549 512 8 5126 7191 832420 506863 512 16 16476 23075 1026126 695697 512 32 15809 25524 1227971 1044594 512 64 10696 34056 633699 1610042 512 128 20140 57015 1695195 637650 512 256 7099 40458 1797349 1605228 512 512 15338 49131 144965 2081286 1024 4 5734 10766 296229 490920 1024 8 5899 9509 493742 748016 1024 16 9485 18327 618354 313254 1024 32 16683 30206 477175 531370 1024 64 9467 20212 793189 612795 1024 128 19961 61637 762491 652551 1024 256 25922 22511 729840 781641 1024 512 16814 62109 336733 1577984 2048 4 5815 5943 244680 511341 2048 8 13321 10333 364616 697302 2048 16 7507 30008 541958 433532 2048 32 25159 41430 352859 512256 2048 64 10768 87506 596407 361653 2048 128 36107 46306 585831 830843 2048 256 44639 34831 1441069 510976 2048 512 64892 54916 1537539 423926 4096 4 7313 6802 187760 498229 4096 8 11893 11760 389762 301598 4096 16 14980 20388 356667 597004 4096 32 21182 37721 1348730 553425 4096 64 24991 42093 713603 1422668 4096 128 26304 48964 498663 1194555 4096 256 33472 36016 371964 459148 4096 512 30890 38698 332925 1300736 8192 4 5625 10121 249056 243410 8192 8 9450 12727 363765 427090 8192 16 10590 20238 356374 366943 8192 32 23248 22764 493285 411553 8192 64 23093 29483 686785 453702 8192 128 29778 36185 884652 653316 8192 256 36022 44008 646920 349561 8192 512 29196 29691 570392 314388 16384 4 5813 8513 344903 229037 16384 8 10365 9029 431316 496575 16384 16 15262 13909 354817 606024 16384 32 24952 24417 574857 382838 16384 64 35768 38903 423820 394815 16384 128 24282 35186 201141 183374 16384 256 33236 50829 554074 559619 16384 512 27964 42568 788982 772243 32768 4 5621 4983 144491 159930 32768 8 5848 12131 230317 529532 32768 16 19539 17865 1386412 547099 32768 32 26908 21931 382777 387799 32768 64