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 Apr 17 05:53:32 2025 Auto Mode Machine = Linux oleg153-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-oleg153-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 11190 18985 385790 365812 64 8 17748 36158 546928 529661 64 16 12141 54144 771797 666414 64 32 15303 80810 983980 1066042 64 64 18885 99871 1518251 799377 128 4 13489 16330 360363 356533 128 8 14660 38334 627328 278199 128 16 33693 61365 743788 836500 128 32 29568 72395 1040839 908709 128 64 36373 101185 1306873 1114289 128 128 25620 112674 1642783 1749872 256 4 15371 18008 268046 218426 256 8 26396 26594 370408 332036 256 16 30335 42881 780445 464661 256 32 25088 56725 992545 556398 256 64 66028 113075 1755037 1790149 256 128 52159 119453 1391207 703260 256 256 27984 141434 1718521 790209 512 4 17765 25801 381245 351423 512 8 25352 35570 640694 693675 512 16 46051 59674 839252 727268 512 32 67887 74985 623578 1684557 512 64 69832 89872 878027 810124 512 128 76852 145455 1376763 958781 512 256 62561 133055 2196227 1968713 512 512 64751 189275 2065273 1778004 1024 4 20807 18970 347101 375374 1024 8 27803 37361 772920 555924 1024 16 42861 49032 798795 960669 1024 32 60753 82340 967159 963471 1024 64 84045 113426 1287921 1356245 1024 128 89518 134310 1374474 1368780 1024 256 109087 167727 1732676 1553442 1024 512 112340 119707 1723636 2156318 2048 4 19960 21896 271723 301530 2048 8 34361 36947 245708 296431 2048 16 42770 48875 388161 625140 2048 32 63266 92255 978485 1160362 2048 64 96034 139329 834557 1379952 2048 128 101788 135708 1269610 1699696 2048 256 96023 164012 1701042 1508115 2048 512 107280 131610 1759221 1549185 4096 4 20925 20599 322288 285077 4096 8 36432 37212 460749 494444 4096 16 57842 60244 749498 649551 4096 32 66739 91340 788761 924603 4096 64 88788 106528 1424201 621450 4096 128 103181 132599 933850 1145415 4096 256 103630 153242 1196969 948597 4096 512 128591 144214 998086 1843372 8192 4 18626 20674 299591 253482 8192 8 31542 37199 390576 470618 8192 16 49608 53916 827550 719804 8192 32 82173 87599 775688 809973 8192 64 94635 107326 1280798 1293528 8192 128 105882 107805 1215034 1252596 8192 256 128683 143217 1369251 794632 8192 512 120236 124765 1308005 1069037 16384 4 20014 19997 294332 365030 16384 8 36716 36063 533110 469187 16384 16 52493 59109 669722 733886 16384 32 75120 85001 813914 846885 16384 64 89337 101195 851249 900816 16384 128 105070 122166 1225168 1123274 16384 256 98987 143196 1048435 1453402 16384 512 132327 143161 1361487 1332914 32768 4 20113 20898 335579 320701 32768 8 32583 37183 583818 549013 32768 16 54110 57179 779836 694413 32768 32 85178 84798 945086 1023107 32768 64 109919 121595 1132034 1170113 32768 128 111628 109924 1353720 1269681 32768 256 119655 148119 1337360 1483712 32768 512 115070 140682 1474306 1474369 65536 4 20755 22057 308451 323226 65536 8 34031 37611 523387 524825 65536 16