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 May 1 15:07:53 2025 Auto Mode Machine = Linux oleg427-client.virtnet 3.10.0-7.9-debug #1 SMP Sat Mar 26 23:2 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-oleg427-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 7914 22082 331481 353760 64 8 5175 29315 180788 524487 64 16 3371 53646 621657 799377 64 32 6293 72475 640954 955947 64 64 9404 72652 1392258 1033216 128 4 4624 21824 328199 101185 128 8 10613 23668 529038 239268 128 16 17694 18884 719853 544601 128 32 13888 70801 1007629 976473 128 64 12808 109771 1359835 1231904 128 128 6719 119842 1663139 486822 256 4 5156 22334 321980 232925 256 8 16042 20262 517265 201573 256 16 13793 52730 826078 768712 256 32 14607 44615 894929 889002 256 64 30152 115470 1032636 1319408 256 128 28763 149279 1579483 885337 256 256 31694 161907 1952947 1694118 512 4 11541 8537 110873 325681 512 8 13359 29213 557816 577155 512 16 27737 53628 581216 780390 512 32 25826 36389 663252 988345 512 64 26103 107606 1312798 1225169 512 128 17208 130579 1463057 1528669 512 256 41946 117113 1454140 1560891 512 512 36061 112481 1983258 1712772 1024 4 8270 13050 237911 363770 1024 8 17689 26271 396587 574285 1024 16 39855 37368 323933 550862 1024 32 20332 33306 1109579 533880 1024 64 75993 60927 1159609 1183902 1024 128 23147 76462 1414304 843505 1024 256 58854 138566 680789 750107 1024 512 65615 159056 722109 1774922 2048 4 13026 11475 357916 177302 2048 8 19348 21747 257478 483808 2048 16 42985 44356 441555 804767 2048 32 37665 36562 1033337 851938 2048 64 55892 58467 1329133 902606 2048 128 56960 132078 190035 1235996 2048 256 44686 56860 979936 1432179 2048 512 29600 48207 1327285 1433135 4096 4 14781 14584 286958 107747 4096 8 14120 13622 323691 574811 4096 16 48648 49419 539368 923162 4096 32 55383 37396 612171 988439 4096 64 68210 92320 1094900 576006 4096 128 62708 98098 1389978 815610 4096 256 56448 121261 308547 890803 4096 512 79682 132137 1546787 566696 8192 4 14299 12232 248445 228145 8192 8 18580 32233 326347 300502 8192 16 34511 28651 320849 624815 8192 32 52388 57747 902403 889162 8192 64 56083 75700 720619 546053 8192 128 50891 91352 834727 1044216 8192 256 75246 78608 875969 1438921 8192 512 62272 76899 1042885 1401305 16384 4 13595 17297 343422 205187 16384 8 25916 20365 510406 457614 16384 16 5220 35539 677781 696628 16384 32 40450 61551 694270 486748 16384 64 57369 64771 923092 703719 16384 128 60391 51946 717780 1161178 16384 256 70077 61889 1283113 855519 16384 512 57251 69194 1186213 1379914 32768 4 11743 15292 214415 160966 32768 8 23097 25311 495996 376142 32768 16 34603 34372 754641 494386 32768 32 33772 57659 555484 1115885 32768 64 53818 69680 840287 658229 32768 128 50967 73464 1136480 1245078 32768 256 65934 78535 772594 762792 32768 512 70054 106302 1376277 1388120 65536 4 10094 12378 154049 122508 65536 8 20126 19968 248170 471708 65536 16 27974 31052 625839 438943 65536 32 32550 51603 539103 421939 65536 64 41280 53208 615385 583377 65536 128