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 08:53:49 2025 Auto Mode Machine = Linux oleg145-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-oleg145-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 9495 17792 1143223 752329 64 8 12003 28790 998622 1029254 64 16 10711 46955 1017549 137602 64 32 14178 93019 1484662 1452528 64 64 12359 93310 1879725 1879725 128 4 11074 18537 516318 913347 128 8 21523 43984 1206978 990891 128 16 21712 61952 1346196 1231904 128 32 25295 93096 663782 1684006 128 64 23264 121332 1749872 1833539 128 128 21255 183369 1967960 1755594 256 4 16103 26885 660030 545931 256 8 24175 40219 977189 1062263 256 16 37323 30970 847597 1306564 256 32 26095 97269 1497953 1718521 256 64 27901 114230 1652404 1422540 256 128 30266 158023 1752173 1826695 256 256 51809 237458 2049885 2030503 512 4 19717 23955 609594 815353 512 8 26718 45369 999850 684608 512 16 33925 84938 1043072 488086 512 32 41340 47316 1326585 1575781 512 64 64506 133435 1501940 724081 512 128 71080 102315 1759070 1650887 512 256 54491 152739 823167 1821745 512 512 74943 195122 2196227 2107844 1024 4 22534 26848 592915 454310 1024 8 37778 46101 1028043 782210 1024 16 38767 82427 1088213 1193442 1024 32 50811 95541 1577404 1358390 1024 64 73658 134277 713591 1519371 1024 128 96640 106015 1456510 391276 1024 256 72111 169394 1395010 1456510 1024 512 73935 142719 1648862 1448650 2048 4 26069 24500 790111 762478 2048 8 38210 45403 821154 1077945 2048 16 67597 58321 1102856 1283266 2048 32 67355 105933 1541955 1263447 2048 64 69257 131857 1056208 1399968 2048 128 70187 146852 1635615 1759221 2048 256 96110 172388 1588726 1620190 2048 512 88026 176396 1738569 763359 4096 4 22605 29860 712124 660642 4096 8 35158 43819 808205 1008574 4096 16 58821 81849 717957 902408 4096 32 85581 121003 1209355 1318707 4096 64 95426 136039 1619549 1521445 4096 128 92475 172681 1127746 1331173 4096 256 101956 141047 1441771 1745069 4096 512 127852 166199 1566390 1681530 8192 4 26067 25887 833694 623579 8192 8 37585 41576 1059903 1152206 8192 16 55015 56636 1381695 1145408 8192 32 68259 65265 1423187 1529832 8192 64 75122 125455 1164784 1332454 8192 128 77596 142027 1630602 1408774 8192 256 89605 165118 1530377 1917630 8192 512 110939 150582 909329 1235970 16384 4 25134 28559 767474 640551 16384 8 41827 50550 932601 1104711 16384 16 63720 63007 1100994 1018597 16384 32 80753 95428 1530064 1301657 16384 64 97299 111718 1504076 1497782 16384 128 92031 134006 1424834 1122265 16384 256 106032 128840 1886456 1381356 16384 512 116483 144136 1564123 1789625 32768 4 26876 27773 772429 651036 32768 8 43754 49028 1132584 1006629 32768 16 68234 76354 1036955 1396527 32768 32 93804 107270 1438205 1115197 32768 64 109234 119007 1468101 1342612 32768 128 98425 122387 1247541 1411573 32768 256 107289 119734 1408044 1448192 32768 512 105967 145706 1688464 1571237 65536 4 23380 28627 784279 797226 65536 8 46585 49968 1102874 1127228 65536 16 69480 77634 1180849 1289115 65536 32 94979 111578 1355869 1490565 65536 64