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: Mon Aug 24 10:06:25 2026 Auto Mode Machine = Linux oleg602-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-oleg602-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 2171 7829 627470 216165 64 8 5950 31938 874936 763021 64 16 1930 11902 1279447 983980 64 32 5757 68377 1232453 258159 64 64 10318 89873 987600 1679761 128 4 7253 11879 684081 492629 128 8 4738 13061 416888 841746 128 16 10688 17599 1007629 595328 128 32 19053 46495 1561553 1281909 128 64 5519 63709 1359835 1185654 128 128 19482 118415 1684006 1557024 256 4 5155 10535 599585 576720 256 8 7679 8205 886067 603630 256 16 12254 18768 332036 797843 256 32 8987 14043 1103757 430218 256 64 16170 101107 1045710 873809 256 128 8629 29695 1312954 1384034 256 256 17543 83146 876662 2152625 512 4 6666 4279 243926 158804 512 8 4023 16864 771143 516618 512 16 11608 20559 638408 449847 512 32 9838 14810 1361057 726039 512 64 10262 31912 1354190 1270094 512 128 23157 110844 1759070 659788 512 256 44256 128293 1723770 761841 512 512 35167 103290 1459080 2307123 1024 4 8557 9282 237977 628672 1024 8 11624 17244 202298 307512 1024 16 9180 16231 217457 275198 1024 32 19034 30241 935151 731954 1024 64 18942 32273 1291406 1233900 1024 128 14520 69329 910953 1140214 1024 256 35981 37439 736220 181338 1024 512 17826 54065 1720874 1620249 2048 4 13951 6638 208383 301572 2048 8 17989 8409 297499 839368 2048 16 6182 8817 618568 447466 2048 32 24473 22958 1507057 1296240 2048 64 29969 49804 1520394 1259557 2048 128 30839 32514 685177 1347481 2048 256 26481 46019 1467911 887407 2048 512 36403 71401 686107 498782 4096 4 10022 9599 456525 247985 4096 8 9139 9230 284605 330485 4096 16 13377 13143 536337 495585 4096 32 17448 24463 656000 203334 4096 64 21118 23943 374985 399069 4096 128 20555 41934 837968 753509 4096 256 27229 25248 1038572 548320 4096 512 35494 41820 203324 208246 8192 4 5422 8118 418297 381716 8192 8 11768 15439 383415 504623 8192 16 22418 30490 350188 399788 8192 32 22319 23379 847242 741089 8192 64 30751 42305 953885 786555 8192 128 28865 42798 747230 686785 8192 256 38567 38788 919845 435535 8192 512 50639 69753 1091381 695586 16384 4 6422 6597 243639 238004 16384 8 10118 15283 536142 418302 16384 16 17889 16327 530018 433518 16384 32 26450 39301 584121 446773 16384 64 28028 43161 1036449 784900 16384 128 31159 40231 928430 976520 16384 256 38625 35216 761757 422978 16384 512 22706 39542 775214 562638 32768 4 4828 7199 282504 129943 32768 8 10260 14852 433679 289211 32768 16 20502 17490 363736 298896 32768 32