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 Mar 28 19:13:29 2025 Auto Mode Machine = Linux oleg346-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-oleg346-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 17376 25670 326641 271200 64 8 22053 42161 496362 459802 64 16 35993 83551 799377 789967 64 32 33630 98769 541412 1484662 64 64 45230 121474 1143223 1526887 128 4 19900 29532 319033 315286 128 8 29927 66876 495814 743788 128 16 38472 87142 646205 722760 128 32 66216 109391 836500 1093856 128 64 75426 133191 1802755 1076312 128 128 77294 243279 1467639 2211113 256 4 25717 29854 521283 474098 256 8 49479 51667 563701 713541 256 16 66322 100080 1089202 707430 256 32 83249 154588 1347557 1632308 256 64 110389 173665 1790149 1952947 256 128 85790 208460 1463250 1304976 256 256 95098 224359 1924938 2305128 512 4 27831 28496 364920 402466 512 8 40220 48962 502946 673655 512 16 58082 89872 1103647 924123 512 32 73215 136315 906185 958781 512 64 127176 181823 1103647 1590957 512 128 134378 221257 1368865 1741948 512 256 141516 308999 1917728 1827947 512 512 153426 326921 2350044 2032051 1024 4 27071 26172 388621 314977 1024 8 49337 47366 528428 719087 1024 16 63964 67182 921705 870694 1024 32 113073 128369 951728 1073525 1024 64 158265 158809 1592612 1479591 1024 128 188899 275180 1503942 1848247 1024 256 161157 256832 1942715 1848247 1024 512 164075 211181 2077065 2146618 2048 4 30046 29655 352801 354636 2048 8 50593 49677 655779 697359 2048 16 71052 84301 1198237 606813 2048 32 92074 129325 1256425 756302 2048 64 147317 184686 1195569 1731211 2048 128 165497 152925 1448358 1576480 2048 256 161335 204947 1416357 1804302 2048 512 145135 273470 1688337 1565562 4096 4 28611 32084 323435 331607 4096 8 46282 52818 606359 646569 4096 16 83328 96317 790104 949698 4096 32 116812 140678 1023964 822640 4096 64 146789 193545 1284014 1443224 4096 128 138144 231569 1830214 1194888 4096 256 180839 174468 1242324 1925820 4096 512 144495 199240 1161288 1282002 8192 4 26450 31590 331284 371112 8192 8 45687 48143 693648 469723 8192 16 65517 81723 736688 854405 8192 32 101185 102410 888312 1006619 8192 64 133867 141253 1050505 1302402 8192 128 172983 184106 1260916 1690116 8192 256 146760 240933 1503392 1567234 8192 512 163797 200828 1864357 1339414 16384 4 26401 28503 428878 415751 16384 8 47703 51952 619642 489867 16384 16 66922 81332 704411 858695 16384 32 115094 116893 1248201 1121423 16384 64 116009 145796 1470193 1366143 16384 128 170995 162346 1346363 1445544 16384 256 168978 188170 1628122 1680067 16384 512 177681 212197 1779522 1584646 32768 4