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: Wed May 28 17:55:27 2025 Auto Mode Machine = Linux oleg436-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-oleg436-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 15583 25434 378715 576282 64 8 16967 21753 587635 831569 64 16 24548 94525 831569 752329 64 32 23978 100469 1168097 1599680 64 64 29850 149562 1991276 1304314 128 4 22939 21794 581781 533241 128 8 28526 40176 870405 511887 128 16 39689 48630 1281909 1332828 128 32 35339 114794 1065630 1082825 128 64 48376 63021 1885042 1939522 128 128 50472 165813 1557024 1637771 256 4 21146 25785 495312 563997 256 8 36132 40200 930608 770920 256 16 47948 61071 1292410 1152323 256 32 70308 128517 1471270 1219045 256 64 73752 158818 1752173 1970871 256 128 71090 208299 1327564 1504249 256 256 83665 200332 2305128 1552085 512 4 20117 26419 476286 484015 512 8 40242 45110 520879 821907 512 16 55417 73670 1312798 1221684 512 32 73186 100845 1506154 1594501 512 64 86151 125769 1695195 1510391 512 128 98086 189844 2047551 1537424 512 256 116737 220213 2016784 2265742 512 512 112152 153153 1861217 2216629 1024 4 26922 30479 482103 456726 1024 8 41634 51462 585479 837420 1024 16 55372 85733 1011817 911146 1024 32 90843 108358 1416169 1462960 1024 64 105413 178682 1406431 1488307 1024 128 95458 195342 1316341 1659694 1024 256 137929 206659 1812371 1973059 1024 512 144612 229741 1858644 1841116 2048 4 28333 31378 471125 549375 2048 8 50451 52557 690519 818571 2048 16 70710 82334 880855 973936 2048 32 91616 128296 1173038 1255690 2048 64 121048 162191 833181 1695335 2048 128 119948 194290 1629101 1639987 2048 256 150014 200508 1625402 1856558 2048 512 140100 178659 1937372 1952344 4096 4 29531 31640 412612 406510 4096 8 50084 52222 747314 792436 4096 16 68686 78263 944010 940960 4096 32 103165 114117 944425 841745 4096 64 125179 154204 1448823 1636364 4096 128 146270 166584 1187290 1159328 4096 256 131194 194270 1078744 1120026 4096 512 166368 206097 1294951 1339476 8192 4 26332 30823 412319 490063 8192 8 46675 53237 644577 723746 8192 16 68361 90962 1028771 949457 8192 32 104422 126630 1518742 1289063 8192 64 126149 151790 1151704 1278178 8192 128 152533 182381 1540118 1348932 8192 256 164931 200882 1660628 1824462 8192 512 171495 206665 1557148 1796887 16384 4 26666 29715 459964 448520 16384 8 46170 48121 632340 637213 16384 16 66810 77261 867299 929008 16384 32 108666 112429 1216601 1162730 16384 64 126845 140109 1441632 1322143 16384 128 153766 176597 1375880 1458429 16384 256 146653 186302 1715422 1693440 16384 512 157166 176308 1692189 1969219 32768 4 27880 31796 449757 475669 32768 8 48156 53268 752888 745185 32768 16 76735 88408 1023168 1037715 32768 32 106438 123801 1276758 1347416 32768 64 136183 151200 1484529 1539918 32768 128 139454 174765 1661078 1735607 32768 256 175460 191690 1495026 1524375 32768 512 177032 204206 1551373 1584149 65536 4