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: Fri May 16 08:52:41 2025 Auto Mode Machine = Linux oleg124-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-oleg124-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 9526 16268 727850 754443 64 8 12298 24786 1017549 969761 64 16 11311 29318 1562436 1143223 64 32 10851 89783 703068 1599680 64 64 10567 121916 1336792 1947927 128 4 10369 25605 735635 579270 128 8 14850 47816 985435 953918 128 16 13469 68848 992724 1172704 128 32 18275 103646 1346196 1471662 128 64 23395 134898 1102844 1749872 128 128 21647 177313 1243315 1858934 256 4 15692 29896 454820 239684 256 8 21623 36760 951219 1040643 256 16 38226 71727 1190657 1347557 256 32 27228 99183 169311 1298662 256 64 35087 116472 1514860 1639786 256 128 28275 104400 1588832 1391207 256 256 31639 123067 2266207 2030503 512 4 12996 21974 1185272 778128 512 8 23054 49037 971797 816594 512 16 33186 59280 1242896 859060 512 32 47184 109560 1201856 1060063 512 64 48558 105244 1551867 1387437 512 128 52325 135233 1882427 1705969 512 256 61814 172035 1695195 1718254 512 512 66072 75985 1560891 2135087 1024 4 17486 20399 372768 743098 1024 8 34929 44361 1025833 1075676 1024 16 43148 43978 1016847 943781 1024 32 45088 58853 1458489 1279861 1024 64 73945 128269 1432225 1490373 1024 128 44669 144369 1521524 1646334 1024 256 69712 111497 1495042 1662264 1024 512 63792 109459 1537317 1357961 2048 4 17662 24047 759915 830522 2048 8 36419 49085 785271 927057 2048 16 40800 62073 376606 1292923 2048 32 67483 109758 1471180 1529327 2048 64 98056 131132 1510236 1489548 2048 128 76654 142361 1591375 1684365 2048 256 73536 123971 1066038 1559876 2048 512 87656 122283 1542232 1113002 4096 4 23822 30451 497378 487679 4096 8 34479 41333 900421 811258 4096 16 55454 74920 582392 805515 4096 32 68789 82757 644531 1153181 4096 64 101108 131530 1261018 1417737 4096 128 92808 157719 1234557 1355006 4096 256 122943 124505 1682848 1198388 4096 512 79071 143396 1666523 1636364 8192 4 23193 23602 548362 728488 8192 8 41263 43666 983904 794503 8192 16 57856 68225 886570 1111361 8192 32 71916 82910 1035249 1351372 8192 64 98460 119557 1245558 880865 8192 128 102556 150579 1684895 627829 8192 256 90467 137235 986758 1240835 8192 512 102104 144927 1439223 1338370 16384 4 20860 24416 772208 551021 16384 8 42996 47337 662593 660752 16384 16 53952 60070 1142301 1314304 16384 32 65018 61500 1155768 1169697 16384 64 76721 106430 1429784 848516 16384 128 87316 109737 667861 1579329 16384 256 99365 106606 1402758 674601 16384 512 78527 133596 1245847 1262348 32768 4 24288 24893 558343 566646 32768 8 32942 39702 921847 1033237 32768 16 45862 58150 1314453 1149108 32768 32 87777 88231 1087231 1260505 32768 64 81977 91086 678075 787179 32768 128 99095 125458 1350753 1533287 32768 256 98725 128996 1252692 1134351 32768 512 87517 137241 1389706 1620803 65536 4 24396 27270 821293 839150 65536 8 41765 44216 1008789 1203067 65536 16 56526 65739 962249 1034130 65536 32