Iozone: Performance Test of File I/O Version $Revision: 1.1 $ Compiled for 32 bit mode. 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. Run began: Tue Aug 14 15:28:35 2001 Command line used: /usr/bin/iozone -a -f /mnt/raid/testfile -R -b ./247-ext2nox.xls -y 2k -q 128k -z Auto Mode Excel chart generation enabled Using Minimum Record Size 2 KB Using Maximum Record Size 128 KB Cross over of record size disabled. 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 2 50512 423841 581889 727591 453753 349718 457309 435440 470389 237069 342191 496285 561392 64 4 407640 571405 927365 1085224 799866 512110 744153 726805 901889 349772 470574 799569 877298 64 8 402543 603672 940971 1142124 940784 621472 831771 744068 1032241 380979 499935 865474 983724 64 16 405053 633897 900939 999466 914826 633935 780665 609564 889213 467339 603871 853133 941618 64 32 376488 627341 888231 1048162 999664 719387 830655 481335 969861 592743 820166 902101 999576 64 64 300473 666660 941393 1084465 1032700 667004 914662 399903 940526 453780 659697 927349 1032443 128 2 278896 429568 688118 739734 494137 350729 509991 482981 496162 240600 343159 546907 566519 128 4 407658 579242 1023885 1113565 766277 531072 810338 795092 804905 338653 472283 858858 894837 128 8 433971 627604 1075302 1163834 969957 606676 920680 848003 1066960 361587 479451 962751 1007543 128 16 452226 646612 948066 1008338 914608 691974 876934 723310 934363 412876 551715 888993 941473 128 32 462032 670128 984669 1066935 999720 691815 921037 706954 992082 483090 649601 948087 1023772 128 64 465370 680695 1000143 1066404 1040455 771279 955435 584457 1031802 566519 864925 969633 1066483 128 128 319977 677202 976655 1084701 1040338 680998 999589 398752 744292 465490 684673 977449 1049646 256 2 287651 432400 699407 739878 492275 350213 517117 492335 492312 235956 342262 551697 571483 256 4 408325 584404 1053660 1122616 804986 527819 787740 828435 802500 334621 470607 873792 911050 256 8 435382 628984 1103545 1168734 955221 616848 937701 901228 937721 350211 472369 992100 1015720 256 16 454738 659744 980724 1015781 931005 666582 911083 785266 930734 392643 531058 934151 962491 256 32 466324 682559 1027884 1053598 1007720 753068 965970 792514 1007871 428843 588429 984819 1036598 256 64 470574 693744 1040532 1094073 1049385 727238 1015986 711071 1019982 490388 670140 1011944 1071017 256 128 467997 693826 973581 1040674 1036383 797489 973592 600952 904760 367819 575305 892050 1015755 512 2 293067 429165 680833 718074 487627 351165 492321 497568 480772 235622 341802 536150 565150 512 4 406333 583163 982760 1086966 805106 535533 752943 840770 746322 331166 466314 828499 890396 512 8 433905 629742 1007822 1089411 944599 621340 881269 929318 866252 341113 464585 887315 953509 512 16 453085 655529 903072 941104 896616 685441 860469 801297 860567 380400 517169 864809 912575 512 32 462920 674542 909420 962505 979071 719043 899891 837954 992139 407302 553499 881283 960609 512 64 468850 686285 925908 1009869 1038436 791302 962445 807527 1055797 431327 585777 823178 965936 512 128 459582 669279 854833 896741 975192 748578 850564 719070 1040749 299055 405392 688182 882681 1024 2 265833 377993 370886 379967 435192 366761 371820 501728 371814 233845 317819 329901 340760 1024 4 375233 519261 485526 505918 653067 567009 541806 846942 534990 313816 422972 430061 441376 1024 8 390094 551711 503698 525392 774569 648120 586471 943735 591580 320202 421745 439099 455115 1024 16 402681 566981 490425 498048 714083 704728 573972 813342 615001 347467 452893 449330 465876 1024 32 410257 565416 498302 504669 806320 764145 632495 859759 609521 354568 463135 458783 471887 1024 64 400780 542675 492773 493019 751267 768159 609517 857619 1057827 355683 445804 454110 490429 1024 128 368077 493480 488536 499988 737767 822478 551122 819830 1061143 252342 298973 413575 457337 2048 2 216012 288941 306817 300646 321307 300423 267153 504929 269684 185004 244477 271619 266771 2048 4 270219 349486 372904 359363 428985 426663 342073 855835 350022 234648 299198 334971 332521 2048 8 278261 355066 372977 373584 478054 475831 368412 955240 382448 240856 299239 356299 357352 2048 16 284090 358606 387295 388471 498782 519003 388760 828810 407319 253277 309600 377161 381235 2048 32 281436 348834 395211 398367 514320 533475 396283 872985 426396 255710 310680 386558 393918 2048 64 269863 328731 400704 409194 500492 525670 420711 899025 436670 246896 289226 389427 405464 2048 128 244507 292068 401650 405947 516512 438923 405943 885408 1084141 177531 199981 382658 404823 4096 2 194583 253558 298782 301022 277319 235131 258276 505432 256722 166592 217179 265251 269154 4096 4 237298 298564 357231 359203 369308 318184 327313 861596 329233 205416 257707 330669 334013 4096 8 240984 297372 368047 374509 404705 341136 354355 960587 359173 211722 258275 354539 359108 4096 16 244114 297565 383521 388137 418814 353590 376019 835578 383125 218406 262597 374132 380529 4096 32 238834 287156 392075 398404 451550 363121 389093 892759 398402 216937 254616 383662 392525 4096 64 224597 263933 395823 403508 449272 343855 396283 916948 408373 207382 238250 389574 401411 4096 128 202101 232806 397707 402435 428002 287538 404462 919617 416217 147694 165668 387363 401885 8192 2 184766 238694 296414 300733 259043 208649 257286 507589 253810 156730 205292 265447 268150 8192 4 218920 276794 352026 360057 344767 268475 325519 865416 325505 190405 240304 330803 334612 8192 8 222493 274973 368843 374782 375091 288694 352041 964106 353881 197174 241146 354832 360310 8192 16 223806 274420 382928 388357 397649 299952 375023 837025 377546 201728 244486 374336 380703 8192 32 217635 262597 390522 396343 411369 294538 387549 898245 391737 198276 235910 385017 392712 8192 64 201827 239015 395233 400862 417980 274227 392919 928485 399764 187036 218272 389984 399883 8192 128 181174 209765 396437 402061 415162 240658 396554 939660 405263 135894 152670 392693 401214 16384 2 177264 231007 296999 300645 249429 195489 257048 503581 246538 151268 199306 265569 268036 16384 4 207198 266632 354309 359534 329929 252784 325486 859463 321582 182386 233353 330242 335051 16384 8 211835 265186 369200 374508 362437 269022 352094 955559 350399 188432 234687 354932 359929 16384 16 212936 264774 382696 388476 386715 274728 374106 839388 375530 193132 238573 375693 381618 16384 32 205694 252185 388947 396102 400049 269062 386259 899179 388512 189710 229625 386597 392949 16384 64 190429 228122 393997 400674 406268 244391 393185 932340 396544 176645 209107 391793 397862 16384 128 170363 199330 396553 401756 409917 215038 395911 949464 401618 130438 146932 393487 400723 32768 2 174731 227073 297423 300665 243718 189032 257173 503209 241042 150090 196599 265829 268438 32768 4 204216 261664 355327 359921 324143 243608 325444 859872 318854 179970 229202 330809 335081 32768 8 208929 260356 369604 374418 355173 258777 351958 956953 348584 185827 229744 355335 359941 32768 16 209695 259222 378628 388674 381169 265192 374774 841349 374804 189927 232621 375607 380673 32768 32 202926 247191 390490 396050 394106 256174 386351 901582 388310 184884 222021 385242 391035 32768 64 188253 224576 393727 399011 400876 234776 393198 938374 395901 174106 205601 391895 396985 32768 128 167960 195903 396567 400816 404074 205355 396452 956060 399892 128432 143923 394999 399985 65536 2 173414 224973 298087 300454 240517 185828 257424 503956 240862 149289 195392 266566 268451 65536 4 202991 258714 354760 359430 319071 238899 325613 860549 318699 179578 227494 332214 335165 65536 8 207742 257546 370995 373893 351480 253857 352812 969768 348877 185114 228554 356158 360406 65536 16 207899 257153 382819 388023 377500 259346 374438 840065 373731 189727 232225 376641 380540 65536 32 201726 243772 389284 394911 391250 251627 386330 903147 388251 186432 223841 387768 391285 65536 64 186643 220999 396157 399670 398201 229430 393592 940191 395904 172701 203369 392910 397093 65536 128 166464 193262 397771 401317 402046 201343 396872 957736 399407 128102 143220 396301 399695 131072 2 68926 216072 299186 300636 240131 181263 257445 508543 240823 145896 191596 267182 268475 131072 4 195953 247587 357373 359935 318565 234520 325506 867968 318627 175058 220249 332959 335122 131072 8 201016 249484 372643 374925 343231 247518 353076 977944 348886 179564 221316 358829 359747 131072 16 201792 248565 385714 388246 375647 252796 375317 842716 373101 182651 221297 378285 380683 131072 32 194418 236797 393881 396319 390468 243488 387875 903832 388771 178762 212813 388522 390866 131072 64 180420 215390 396852 399090 396854 221741 394157 934752 394955 168319 197937 394304 397035 131072 128 161771 189485 398648 400988 399923 196619 397319 954222 399248 125046 139353 397953 399776 262144 2 56114 4332 20928 21908 2095 1142 3439 504260 8009 83304 4413 20616 21830 262144 4 85372 81335 21677 21947 4918 14781 4044 859429 10371 85099 80152 22271 22343 262144 8 85730 76726 22351 22614 8972 30279 5427 958755 11464 84855 80895 21710 21758 262144 16 88086 81441 21983 21755 14720 59748 6943 840286 18987 85529 81614 22109 22580 262144 32 86313 79937 22738 22606 25045 110686 13766 900621 18322 85265 81214 22117 22450 262144 64 86579 79639 22399 22323 39562 173416 20985 931739 24603 84445 78458 22294 22957 262144 128 82961 79541 22049 22714 65535 182957 34388 950537 34809 80970 74896 22739 22433 524288 2 46038 4198 21396 22216 560 413 2754 502166 3131 49418 4207 20954 21945 524288 4 49608 47089 21178 22373 1090 5067 2685 868457 4374 49247 47118 21169 21687 524288 8 49926 48398 21394 22014 2045 9354 2899 955425 5052 50114 47294 22576 22230 524288 16 50195 48088 22177 23036 3508 16634 3132 831713 6720 49861 47549 21707 22675 524288 32 49692 47542 21278 21929 6453 24095 6066 898528 6918 49928 47135 21707 22318 524288 64 50212 47846 21673 22384 11248 43567 8803 934348 10120 49663 44564 22014 22371 524288 128 49648 47342 21535 22437 19525 44740 13310 956039 13738 48889 47030 21736 22025 iozone test complete. Excel output is below: "Writer report" "2" "4" "8" "16" "32" "64" "128" "64" 50512 407640 402543 405053 376488 300473 "128 " 278896 407658 433971 452226 462032 465370 319977 "256 " 287651 408325 435382 454738 466324 470574 467997 "512 " 293067 406333 433905 453085 462920 468850 459582 "1024 " 265833 375233 390094 402681 410257 400780 368077 "2048 " 216012 270219 278261 284090 281436 269863 244507 "4096 " 194583 237298 240984 244114 238834 224597 202101 "8192 " 184766 218920 222493 223806 217635 201827 181174 "16384 " 177264 207198 211835 212936 205694 190429 170363 "32768 " 174731 204216 208929 209695 202926 188253 167960 "65536 " 173414 202991 207742 207899 201726 186643 166464 "131072 " 68926 195953 201016 201792 194418 180420 161771 "262144 " 56114 85372 85730 88086 86313 86579 82961 "524288 " 46038 49608 49926 50195 49692 50212 49648 "Re-writer report" "2" "4" "8" "16" "32" "64" "128" "64" 423841 571405 603672 633897 627341 666660 "128 " 429568 579242 627604 646612 670128 680695 677202 "256 " 432400 584404 628984 659744 682559 693744 693826 "512 " 429165 583163 629742 655529 674542 686285 669279 "1024 " 377993 519261 551711 566981 565416 542675 493480 "2048 " 288941 349486 355066 358606 348834 328731 292068 "4096 " 253558 298564 297372 297565 287156 263933 232806 "8192 " 238694 276794 274973 274420 262597 239015 209765 "16384 " 231007 266632 265186 264774 252185 228122 199330 "32768 " 227073 261664 260356 259222 247191 224576 195903 "65536 " 224973 258714 257546 257153 243772 220999 193262 "131072 " 216072 247587 249484 248565 236797 215390 189485 "262144 " 4332 81335 76726 81441 79937 79639 79541 "524288 " 4198 47089 48398 48088 47542 47846 47342 "Reader report" "2" "4" "8" "16" "32" "64" "128" "64" 581889 927365 940971 900939 888231 941393 "128 " 688118 1023885 1075302 948066 984669 1000143 976655 "256 " 699407 1053660 1103545 980724 1027884 1040532 973581 "512 " 680833 982760 1007822 903072 909420 925908 854833 "1024 " 370886 485526 503698 490425 498302 492773 488536 "2048 " 306817 372904 372977 387295 395211 400704 401650 "4096 " 298782 357231 368047 383521 392075 395823 397707 "8192 " 296414 352026 368843 382928 390522 395233 396437 "16384 " 296999 354309 369200 382696 388947 393997 396553 "32768 " 297423 355327 369604 378628 390490 393727 396567 "65536 " 298087 354760 370995 382819 389284 396157 397771 "131072 " 299186 357373 372643 385714 393881 396852 398648 "262144 " 20928 21677 22351 21983 22738 22399 22049 "524288 " 21396 21178 21394 22177 21278 21673 21535 "Re-Reader report" "2" "4" "8" "16" "32" "64" "128" "64" 727591 1085224 1142124 999466 1048162 1084465 "128 " 739734 1113565 1163834 1008338 1066935 1066404 1084701 "256 " 739878 1122616 1168734 1015781 1053598 1094073 1040674 "512 " 718074 1086966 1089411 941104 962505 1009869 896741 "1024 " 379967 505918 525392 498048 504669 493019 499988 "2048 " 300646 359363 373584 388471 398367 409194 405947 "4096 " 301022 359203 374509 388137 398404 403508 402435 "8192 " 300733 360057 374782 388357 396343 400862 402061 "16384 " 300645 359534 374508 388476 396102 400674 401756 "32768 " 300665 359921 374418 388674 396050 399011 400816 "65536 " 300454 359430 373893 388023 394911 399670 401317 "131072 " 300636 359935 374925 388246 396319 399090 400988 "262144 " 21908 21947 22614 21755 22606 22323 22714 "524288 " 22216 22373 22014 23036 21929 22384 22437 "Random read report" "2" "4" "8" "16" "32" "64" "128" "64" 453753 799866 940784 914826 999664 1032700 "128 " 494137 766277 969957 914608 999720 1040455 1040338 "256 " 492275 804986 955221 931005 1007720 1049385 1036383 "512 " 487627 805106 944599 896616 979071 1038436 975192 "1024 " 435192 653067 774569 714083 806320 751267 737767 "2048 " 321307 428985 478054 498782 514320 500492 516512 "4096 " 277319 369308 404705 418814 451550 449272 428002 "8192 " 259043 344767 375091 397649 411369 417980 415162 "16384 " 249429 329929 362437 386715 400049 406268 409917 "32768 " 243718 324143 355173 381169 394106 400876 404074 "65536 " 240517 319071 351480 377500 391250 398201 402046 "131072 " 240131 318565 343231 375647 390468 396854 399923 "262144 " 2095 4918 8972 14720 25045 39562 65535 "524288 " 560 1090 2045 3508 6453 11248 19525 "Random write report" "2" "4" "8" "16" "32" "64" "128" "64" 349718 512110 621472 633935 719387 667004 "128 " 350729 531072 606676 691974 691815 771279 680998 "256 " 350213 527819 616848 666582 753068 727238 797489 "512 " 351165 535533 621340 685441 719043 791302 748578 "1024 " 366761 567009 648120 704728 764145 768159 822478 "2048 " 300423 426663 475831 519003 533475 525670 438923 "4096 " 235131 318184 341136 353590 363121 343855 287538 "8192 " 208649 268475 288694 299952 294538 274227 240658 "16384 " 195489 252784 269022 274728 269062 244391 215038 "32768 " 189032 243608 258777 265192 256174 234776 205355 "65536 " 185828 238899 253857 259346 251627 229430 201343 "131072 " 181263 234520 247518 252796 243488 221741 196619 "262144 " 1142 14781 30279 59748 110686 173416 182957 "524288 " 413 5067 9354 16634 24095 43567 44740 "Backward read report" "2" "4" "8" "16" "32" "64" "128" "64" 457309 744153 831771 780665 830655 914662 "128 " 509991 810338 920680 876934 921037 955435 999589 "256 " 517117 787740 937701 911083 965970 1015986 973592 "512 " 492321 752943 881269 860469 899891 962445 850564 "1024 " 371820 541806 586471 573972 632495 609517 551122 "2048 " 267153 342073 368412 388760 396283 420711 405943 "4096 " 258276 327313 354355 376019 389093 396283 404462 "8192 " 257286 325519 352041 375023 387549 392919 396554 "16384 " 257048 325486 352094 374106 386259 393185 395911 "32768 " 257173 325444 351958 374774 386351 393198 396452 "65536 " 257424 325613 352812 374438 386330 393592 396872 "131072 " 257445 325506 353076 375317 387875 394157 397319 "262144 " 3439 4044 5427 6943 13766 20985 34388 "524288 " 2754 2685 2899 3132 6066 8803 13310 "Record rewrite report" "2" "4" "8" "16" "32" "64" "128" "64" 435440 726805 744068 609564 481335 399903 "128 " 482981 795092 848003 723310 706954 584457 398752 "256 " 492335 828435 901228 785266 792514 711071 600952 "512 " 497568 840770 929318 801297 837954 807527 719070 "1024 " 501728 846942 943735 813342 859759 857619 819830 "2048 " 504929 855835 955240 828810 872985 899025 885408 "4096 " 505432 861596 960587 835578 892759 916948 919617 "8192 " 507589 865416 964106 837025 898245 928485 939660 "16384 " 503581 859463 955559 839388 899179 932340 949464 "32768 " 503209 859872 956953 841349 901582 938374 956060 "65536 " 503956 860549 969768 840065 903147 940191 957736 "131072 " 508543 867968 977944 842716 903832 934752 954222 "262144 " 504260 859429 958755 840286 900621 931739 950537 "524288 " 502166 868457 955425 831713 898528 934348 956039 "Stride read report" "2" "4" "8" "16" "32" "64" "128" "64" 470389 901889 1032241 889213 969861 940526 "128 " 496162 804905 1066960 934363 992082 1031802 744292 "256 " 492312 802500 937721 930734 1007871 1019982 904760 "512 " 480772 746322 866252 860567 992139 1055797 1040749 "1024 " 371814 534990 591580 615001 609521 1057827 1061143 "2048 " 269684 350022 382448 407319 426396 436670 1084141 "4096 " 256722 329233 359173 383125 398402 408373 416217 "8192 " 253810 325505 353881 377546 391737 399764 405263 "16384 " 246538 321582 350399 375530 388512 396544 401618 "32768 " 241042 318854 348584 374804 388310 395901 399892 "65536 " 240862 318699 348877 373731 388251 395904 399407 "131072 " 240823 318627 348886 373101 388771 394955 399248 "262144 " 8009 10371 11464 18987 18322 24603 34809 "524288 " 3131 4374 5052 6720 6918 10120 13738 "Fwrite report" "2" "4" "8" "16" "32" "64" "128" "64" 237069 349772 380979 467339 592743 453780 "128 " 240600 338653 361587 412876 483090 566519 465490 "256 " 235956 334621 350211 392643 428843 490388 367819 "512 " 235622 331166 341113 380400 407302 431327 299055 "1024 " 233845 313816 320202 347467 354568 355683 252342 "2048 " 185004 234648 240856 253277 255710 246896 177531 "4096 " 166592 205416 211722 218406 216937 207382 147694 "8192 " 156730 190405 197174 201728 198276 187036 135894 "16384 " 151268 182386 188432 193132 189710 176645 130438 "32768 " 150090 179970 185827 189927 184884 174106 128432 "65536 " 149289 179578 185114 189727 186432 172701 128102 "131072 " 145896 175058 179564 182651 178762 168319 125046 "262144 " 83304 85099 84855 85529 85265 84445 80970 "524288 " 49418 49247 50114 49861 49928 49663 48889 "Re-Fwrite report" "2" "4" "8" "16" "32" "64" "128" "64" 342191 470574 499935 603871 820166 659697 "128 " 343159 472283 479451 551715 649601 864925 684673 "256 " 342262 470607 472369 531058 588429 670140 575305 "512 " 341802 466314 464585 517169 553499 585777 405392 "1024 " 317819 422972 421745 452893 463135 445804 298973 "2048 " 244477 299198 299239 309600 310680 289226 199981 "4096 " 217179 257707 258275 262597 254616 238250 165668 "8192 " 205292 240304 241146 244486 235910 218272 152670 "16384 " 199306 233353 234687 238573 229625 209107 146932 "32768 " 196599 229202 229744 232621 222021 205601 143923 "65536 " 195392 227494 228554 232225 223841 203369 143220 "131072 " 191596 220249 221316 221297 212813 197937 139353 "262144 " 4413 80152 80895 81614 81214 78458 74896 "524288 " 4207 47118 47294 47549 47135 44564 47030 "Fread report" "2" "4" "8" "16" "32" "64" "128" "64" 496285 799569 865474 853133 902101 927349 "128 " 546907 858858 962751 888993 948087 969633 977449 "256 " 551697 873792 992100 934151 984819 1011944 892050 "512 " 536150 828499 887315 864809 881283 823178 688182 "1024 " 329901 430061 439099 449330 458783 454110 413575 "2048 " 271619 334971 356299 377161 386558 389427 382658 "4096 " 265251 330669 354539 374132 383662 389574 387363 "8192 " 265447 330803 354832 374336 385017 389984 392693 "16384 " 265569 330242 354932 375693 386597 391793 393487 "32768 " 265829 330809 355335 375607 385242 391895 394999 "65536 " 266566 332214 356158 376641 387768 392910 396301 "131072 " 267182 332959 358829 378285 388522 394304 397953 "262144 " 20616 22271 21710 22109 22117 22294 22739 "524288 " 20954 21169 22576 21707 21707 22014 21736 "Re-Fread report" "2" "4" "8" "16" "32" "64" "128" "64" 561392 877298 983724 941618 999576 1032443 "128 " 566519 894837 1007543 941473 1023772 1066483 1049646 "256 " 571483 911050 1015720 962491 1036598 1071017 1015755 "512 " 565150 890396 953509 912575 960609 965936 882681 "1024 " 340760 441376 455115 465876 471887 490429 457337 "2048 " 266771 332521 357352 381235 393918 405464 404823 "4096 " 269154 334013 359108 380529 392525 401411 401885 "8192 " 268150 334612 360310 380703 392712 399883 401214 "16384 " 268036 335051 359929 381618 392949 397862 400723 "32768 " 268438 335081 359941 380673 391035 396985 399985 "65536 " 268451 335165 360406 380540 391285 397093 399695 "131072 " 268475 335122 359747 380683 390866 397035 399776 "262144 " 21830 22343 21758 22580 22450 22957 22433 "524288 " 21945 21687 22230 22675 22318 22371 22025