Iozone: Performance Test of File I/O Version $Revision: 3.429 $ 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. Run began: Thu Oct 24 10:44:21 2019 Auto Mode 2. This option is obsolete. Use -az -i0 -i1 Command line used: iozone -A 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. kB reclen write rewrite read reread 64 4 453587 821391 1828508 1599680 64 8 481234 969761 2561267 2067979 64 16 520419 2203800 3363612 3057153 64 32 524487 1138375 4018152 3203069 64 64 542506 1143223 3588436 5389653 128 4 438331 831319 1939522 1710838 128 8 566435 1185654 2784517 2326073 128 16 535368 1278855 3359523 2843510 128 32 633995 1032829 3895854 3277486 128 64 578645 1421023 4135958 4135958 128 128 568836 1487977 4135958 6406138 256 4 516022 1044693 1981783 1740810 256 8 624339 1311351 2842047 2413957 256 16 605332 1430119 3499745 2975955 256 32 654798 1588832 4070199 3368013 256 64 706964 1561112 4197489 4070199 256 128 713067 1696795 4496299 4840911 256 256 719277 1662639 4496299 6936061 512 4 533960 1071167 1760512 1747618 512 8 624303 1347393 2845081 2438090 512 16 673655 1514652 3409755 2958758 512 32 728255 1589779 4068701 3325278 512 64 709019 1556366 3580298 3849877 512 128 718268 1723770 4610256 4271001 512 256 751707 1723770 4650188 4961773 512 512 747521 1394645 4571003 6395018 1024 4 542924 1083819 1942715 1681790 1024 8 666216 1510288 2805690 2169388 1024 16 693317 1521524 3472628 2934110 1024 32 732453 1640674 4033569 3358576 1024 64 769320 1659694 4339202 3680961 1024 128 754587 1765437 4654248 3966517 1024 256 770010 1651398 4736370 3791442 1024 512 760735 1793451 4321737 4415030 1024 1024 733579 1724328 2950233 4211554 2048 4 529334 1659632 2115327 1727034 2048 8 706943 1486197 2864451 2316716 2048 16 381100 2035623 3500658 2786401 2048 32 746638 1642181 4056054 3261415 2048 64 762207 1703741 4170264 3567536 2048 128 767314 1738569 4338776 3598924 2048 256 768481 1758140 4394265 3792790 2048 512 772489 1765730 4444282 3624742 2048 1024 740141 1726687 3586902 3530875 2048 2048 742315 1685687 3047366 3924484 4096 4 655149 1313264 2186900 1680050 4096 8 722000 1355327 3049966 2587795 4096 16 835239 1558574 3500519 1124940 4096 32 866147 1942368 3996428 3214912 4096 64 827634 2010798 4476482 3495533 4096 128 846473 2182178 4851966 3697135 4096 256 865580 1985468 4875373 3785107 4096 512 789341 2262949 4812550 3612399 4096 1024 841086 2767462 4000150 3271853 4096 2048 900421 1669763 3387995 3416292 4096 4096 894514 1787185 3075079 3806071 8192 4 761488 1201691 1939934 2485548 8192 8 794724 1861428 2825681 2733513 8192 16 828728 1637440 4244664 3014063 8192 32 1007859 1653993 4179607 3105317 8192 64 913997 1944875 4610309 3413171 8192 128 959024 1774247 6947247 4095903 8192 256 1026711 1792201 7128863 4461836 8192 512 948697 1807664 4670469 3616888 8192 1024 1052114 1749316 4013610 3380930 8192 2048 1035125 1757189 3833591 3759762 8192 4096 1010853 1784012 3410461 3398990 8192 8192 942710 1578683 2881366 5234728 16384 4 875119 1225999 2097804 2941908 16384 8 889666 1192015 2699560 2731102 16384 16 915163 1391651 3313889 4108344 16384 32 898989 1499678 3579548 4841852 16384 64 1050872 1664159 4133302 4042368 16384 128 984437 1572679 4252230 4527330 16384 256 975300 1634978 4453395 4807640 16384 512 1039600 1594870 4185922 3199259 16384 1024 908149 1544785 3777703 3994202 16384 2048 1070433 1450028 3688486 3882498 16384 4096 1027153 1726628 3449287 3783944 16384 8192 981667 1402873 2982641 4266751 16384 16384 1098706 1390947 2716205 3760339 32768 4 887608 1354548 2351683 2790876 32768 8 940719 1386594 2726108 3476667 32768 16 1061995 1481984 2992760 4164715 32768 32 1025343 1546381 3436935 4606201 32768 64 1113688 1633575 3972820 5305743 32768 128 1141464 1826023 3937987 4842331 32768 256 1059628 1713450 3919681 4849507 32768 512 1076721 1787270 3738532 4638067 32768 1024 1058323 1728448 3512475 4227095 32768 2048 1100296 1938249 3619595 4064100 32768 4096 1130637 1612606 3928981 4858250 32768 8192 1099926 1610132 3785174 4117674 32768 16384 1041016 1754282 3051906 3542167 65536 4 956783 1362124 2476805 2783776 65536 8 1040779 1699538 2994025 3628568 65536 16 1082163 1814138 4053959 4347008 65536 32 1139655 1798364 3852161 4085289 65536 64 1114518 1838982 4059467 4310741 65536 128 1165043 1992102 4215349 4467684 65536 256 1159397 1849002 4342682 4472555 65536 512 1185831 1847548 4703929 4755853 65536 1024 1211429 1826530 3993182 4300288 65536 2048 992293 1987263 3775753 4272549 65536 4096 1172878 1940367 3951279 4240188 65536 8192 1130636 1924015 4035449 4090396 65536 16384 1154595 1776583 3959646 3899983 131072 4 996563 1515753 2876016 3011274 131072 8 1086940 1710137 3840825 3805913 131072 16 1193386 1813622 4438031 4409765 131072 32 1178747 1956448 4614065 4383535 131072 64 1186342 1984586 4860630 4886770 131072 128 1206081 2050625 4669997 4699458 131072 256 1185465 2009195 5440444 5202926 131072 512 1239532 2047936 4912929 4968250 131072 1024 1256611 2012063 5681478 4812464 131072 2048 1230652 2003418 5072259 4871657 131072 4096 1237509 2030613 4260160 4254753 131072 8192 1193614 2096649 4728439 4801494 131072 16384 1175689 1916254 3588957 3609410 262144 4 981302 1558461 3180317 3029443 262144 8 1105234 1739924 4008737 3910434 262144 16 1124540 1869091 4649081 4612126 262144 32 1150617 1982124 5205409 4943673 262144 64 1207869 2030594 5470103 5189023 262144 128 1183584 1979280 5463824 5325754 262144 256 1213606 2070320 5712437 5533252 262144 512 1325278 2133036 5088004 5009830 262144 1024 1288024 2104748 5515571 5064217 262144 2048 1235787 2046353 5085744 4947143 262144 4096 1213787 2130556 4882729 4899417 262144 8192 1359385 2228986 5026159 4825577 262144 16384 1194848 2100867 3974409 4010828 524288 4 231653 234411 3301812 3615501 524288 8 234933 240573 4111639 3937396 524288 16 235279 242574 4729541 4514782 524288 32 230202 241636 5369826 5046770 524288 64 231100 235673 5753761 5328939 524288 128 236725 247618 5681866 5659726 524288 256 238322 239265 6314427 5714497 524288 512 241072 245117 5661678 5441109 524288 1024 240304 242703 5464636 5263732 524288 2048 238195 240062 4225641 4104310 524288 4096 239574 250605 5732806 5305373 524288 8192 239554 239157 5484193 5239115 524288 16384 244558 247801 4223458 4194505 iozone test complete. root@bilbo2:~/test# dd if=/dev/zero of=zeros bs=512k count=100000 100000+0 records in 100000+0 records out 52428800000 bytes (52 GB, 49 GiB) copied, 501.71 s, 105 MB/s