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: Tue Apr 8 15:35:22 2025 Auto Mode Machine = Linux oleg419-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-oleg419-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 12345 22253 432398 262193 64 8 20005 58664 710511 877797 64 16 25137 63045 1204796 735831 64 32 18491 85331 1105556 942521 64 64 18120 152710 1255511 1336792 128 4 16911 26528 370050 488150 128 8 23795 37262 531131 770474 128 16 27491 49495 740710 1278855 128 32 40712 123794 1000121 1642783 128 64 34896 162402 1316487 1487977 128 128 36116 131014 1492113 1543594 256 4 18111 19427 405827 460476 256 8 30135 44152 568777 870974 256 16 45453 48586 729540 924200 256 32 54090 118569 1600674 1040643 256 64 60408 178903 1881098 1525622 256 128 53235 136092 1952947 1715775 256 256 66322 138158 1752173 1673001 512 4 18831 28392 422749 357092 512 8 33573 42567 534491 769761 512 16 62682 98063 1292259 861818 512 32 66946 96477 1454140 1204552 512 64 68761 116623 1155924 1188552 512 128 111523 183251 1741948 1753325 512 256 80542 142021 1684557 1848401 512 512 88982 169362 1537424 1968713 1024 4 21822 30888 444254 521119 1024 8 38759 51031 884319 585799 1024 16 56961 75850 772225 1110727 1024 32 86699 114784 1247157 1286378 1024 64 109248 151949 1262555 1398645 1024 128 94971 112886 1462960 1563622 1024 256 123359 161971 1424152 1738286 1024 512 102285 184105 1729884 1542286 2048 4 25609 27084 358230 323796 2048 8 43676 47055 654730 553196 2048 16 61267 59585 957436 602683 2048 32 99233 99571 1116764 1078351 2048 64 118032 126475 1388428 1389326 2048 128 117762 157149 1373553 905461 2048 256 104875 193887 1532875 831165 2048 512 144490 174164 1533148 890443 4096 4 25125 20827 373347 368115 4096 8 34423 49485 589769 508192 4096 16 65821 72393 710740 764303 4096 32 87810 120883 833011 1218965 4096 64 96978 152182 1198723 1265383 4096 128 118347 159457 1000994 1574718 4096 256 109656 198123 1493277 1497181 4096 512 139795 185474 1127376 1108821 8192 4 21904 26005 391101 347532 8192 8 35352 42439 593321 609336 8192 16 63951 64506 776108 901906 8192 32 78450 91247 1097832 960257 8192 64 115451 134174 1321487 1227273 8192 128 133766 163138 1503392 1345604 8192 256 153803 194418 1320015 1655986 8192 512 166619 203134 1788656 1809187 16384 4 23293 26141 399374 501899 16384 8 43523 46921 614165 723227 16384 16 70116 74934 758268 766643 16384 32 90817 110352 1252889 1285129 16384 64 117264 134212 1458925 1427438 16384 128 141480 151636 1610079 1341763 16384 256 120997 174434 1641500 1722301 16384 512 144906 180178 1596241 1627004 32768 4 23948 27262 379255 450523 32768 8