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 15:43:33 2025 Auto Mode Machine = Linux oleg220-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-oleg220-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 5232 22023 323102 28673 64 8 9803 37444 467002 538156 64 16 10064 10261 712397 576282 64 32 7345 63298 70329 877797 64 64 7379 86962 1562436 1210227 128 4 7164 14050 310724 302666 128 8 7476 29500 571257 509943 128 16 13141 61127 106844 692017 128 32 16533 78001 1009524 859260 128 64 20611 111203 1377278 1409828 128 128 8110 120515 1689305 1451764 256 4 11183 16985 278257 345387 256 8 11776 14946 552960 609801 256 16 22405 48641 883152 780445 256 32 21987 36823 1024752 937924 256 64 30033 98537 1185399 1132871 256 128 26248 117801 1413179 1405778 256 256 33367 121797 1855098 1080434 512 4 13446 16985 328823 320003 512 8 10001 14429 109964 387576 512 16 22740 44134 789862 392606 512 32 26560 96080 1185272 1233614 512 64 34311 129453 1091863 1195832 512 128 31948 99072 1270846 1652157 512 256 23236 140811 1760512 2141475 512 512 19158 158710 1947291 1842059 1024 4 20301 16955 242656 356671 1024 8 18575 20941 559254 535545 1024 16 25088 39959 885048 810095 1024 32 26256 65173 199147 975285 1024 64 19411 68660 1072185 1208894 1024 128 16681 74338 257680 1345623 1024 256 25107 42419 975285 1250425 1024 512 38383 87260 1584972 1424152 2048 4 5594 7653 123447 157478 2048 8 11556 20034 240885 183053 2048 16 15840 22636 150865 510855 2048 32 23306 26496 608619 270866 2048 64 23963 32483 708109 1130878 2048 128 41818 144226 641001 1346636 2048 256 47370 53590 1343897 966050 2048 512 66867 103569 1555075 1523901 4096 4 11417 11079 251642 182052 4096 8 15861 20239 520195 263358 4096 16 28994 46355 407968 637618 4096 32 55735 61984 953229 432113 4096 64 65637 114965 1447846 596382 4096 128 46183 28543 1416802 560631 4096 256 71945 117856 1389416 241138 4096 512 61541 133698 1191077 499330 8192 4 10944 9414 268872 138095 8192 8 20526 22019 293229 314630 8192 16 27763 41803 515836 795110 8192 32 47369 61272 780268 410418 8192 64 52923 49493 676908 754813 8192 128 45089 72459 1406871 1394141 8192 256 44830 94086 510342 622449 8192 512 58807 49400 671314 1409525 16384 4 10036 9677 279166 100041 16384 8 11492 16610 305910 315264 16384 16 25986 23628 335318 312141 16384 32 41964 42220 376799 396420 16384 64 33861 44856 371838 714928 16384 128 46293 45033 848254 663963 16384 256 56824 51472 709906 1131877 16384 512 51708 53026 1225168 521238 32768 4 10581 13620 138893 117443 32768 8 15807 19241 405751 312379 32768 16 36645 36587 406514 203265 32768 32 33270 42149 413847 533385 32768 64 47154 70001 767760 1034567 32768 128 61091 82800 841759 802882 32768 256 47179 58445 1056590 1217547 32768 512 78060 82136 423330 933372 65536 4 10007 10785 160613 351944 65536 8 22700 21869 218223 278192 65536 16