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 23:51:03 2025 Auto Mode Machine = Linux oleg328-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-oleg328-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 20493 30090 496362 457452 64 8 24381 54374 703068 532815 64 16 29023 98011 710511 1002351 64 32 38486 125039 1484662 1452528 64 64 38141 120764 1599680 1330167 128 4 18502 21548 363535 334331 128 8 32854 63869 512376 516318 128 16 44031 97121 748976 604036 128 32 50773 110064 902598 1319723 128 64 73646 154237 1266785 1406136 128 128 65875 180290 1939522 2175277 256 4 23516 28271 282578 381056 256 8 36153 38173 579209 673696 256 16 53367 87883 742146 679237 256 32 79827 135031 917096 1062263 256 64 83658 143341 1137672 1471270 256 128 102900 197968 1884399 1463250 256 256 115632 254754 2187712 2223962 512 4 27199 31608 352635 463338 512 8 44684 57271 831453 615359 512 16 57476 71397 924521 1015932 512 32 94275 119153 934173 1254513 512 64 108772 198458 1193175 1391933 512 128 122960 231664 1361920 1999881 512 256 92005 292421 2032051 1438555 512 512 100294 273920 1875849 1759070 1024 4 31231 33450 418131 551145 1024 8 50932 44935 734583 744774 1024 16 73920 73478 742071 911726 1024 32 123178 142818 1035479 1053512 1024 64 103215 149074 1239956 1479591 1024 128 117029 237753 1805514 1381993 1024 256 149334 157730 1599731 1446211 1024 512 150585 203864 1783768 1899750 2048 4 26232 28232 422279 417031 2048 8 43876 59984 436196 474063 2048 16 60654 87787 842827 1102856 2048 32 88942 128233 1013824 958291 2048 64 112416 122021 1182403 1575323 2048 128 127260 168907 1539744 1485169 2048 256 136843 161705 1422220 1336787 2048 512 184452 199748 1512364 1933883 4096 4 27513 34725 420438 443765 4096 8 42292 56971 644024 497998 4096 16 66239 75487 994389 762032 4096 32 101951 111646 1256407 931117 4096 64 131831 150030 1250281 1090521 4096 128 135881 183389 1026043 1286033 4096 256 143071 166517 1701009 1749690 4096 512 163853 220026 1784030 1850918 8192 4 27732 30370 320876 520556 8192 8 51971 50654 583477 684664 8192 16 74851 72121 881136 834727 8192 32 104457 121989 1178042 942142 8192 64 134632 151051 1519884 1300086 8192 128 150907 181103 1567591 1438982 8192 256 149538 170312 1406122 1399878 8192 512 147752 241665 1412190 1313656 16384 4 27183 31108 358652 413226 16384 8 51921 60836 848610 730321 16384 16 74676 82064 992972 751214 16384 32 117878 109207 1339774 1292525 16384 64 136508 151675 1644014 1225518 16384 128 150715 215902 1727192 1625888 16384 256 167183 220475 1414860 1647601 16384 512 202551 213463 1712557 1402129 32768 4 27532 30767 447558 483212 32768 8