renzhengeek
commented
8 years ago sleep, no patch: n1:~ # tail -f sle11sp3-write-Goldwyn-6.log iomaker -w -v -l -r -1 /mnt/shared/file 1000 buffer length/nCount = 1024 1000 1| 383 886 777 915 793 335 386 492 649 421 ... 421 write time:41073 msecs 2| 693 334 439 334 421 159 985 957 354 761 ... 833 write time:27158 msecs 3| 536 127 906 999 697 316 260 839 570 567 ... 72 write time:1584 msecs 4| 327 451 196 882 610 494 98 392 582 953 ... 475 write time:32730 msecs 5| 822 872 230 157 481 745 566 153 592 541 ... 628 write time:41734 msecs 6| 543 78 31 811 626 104 389 412 687 296 ... 243 write time:24723 msecs 7| 489 238 323 460 853 965 327 426 264 871 ... 339 write time:36803 msecs
n2:~ # tail -f sle11sp3-read-Goldwyn-6.log iomaker -v -l -r -1 /mnt/shared/file 1000 buffer length/nCount = 1024 1000 1| 313 984 970 579 284 832 333 910 847 720 ... 910 read time:1 msec 2| 313 984 970 579 284 832 333 910 847 720 ... 696 read time:1 msec 3| 313 984 970 579 284 832 333 910 847 720 ... 328 read time:1 msec 4| 383 886 777 915 793 335 386 492 649 421 ... 900 read time:41010 msec 5| 0 325 997 283 412 127 382 421 426 67 ... 900 read time:27136 msec 6| 0 562 457 832 348 461 17 807 169 497 ... 900 read time:71 msec 7| 0 271 150 108 381 556 287 388 328 462 ... 363 read time:1550 msec 8| 327 451 196 882 610 494 98 392 582 953 ... 847 read time:32725 msec 9| 822 872 230 157 481 745 566 153 592 541 ... 260 read time:41623 msec 10| 822 872 230 157 481 745 566 153 592 541 ... 690 read time:24695 msec 11| 489 78 323 811 853 104 327 412 264 296 ... 368 read time:36819 msec 12| 0 750 924 496 160 254 521 119 98 434 ... 835 read time:24592 msec
on sleep, no patch: when 1 writer, 2 reader, almost can't make any process, it's unacceptable! n1:~ # tail -f sle11sp3-write-Goldwyn-6.log 86| 398 273 210 215 513 561 507 869 423 332 ... 262 write time:3 msecs 87| 800 241 730 873 661 107 537 939 436 138 ... 430 write time:3 msecs 88| 620 60 669 55 92 682 989 937 440 86 ... 858 write time:3 msecs 89| 828 596 823 653 602 968 647 460 940 851 ... 713 write time:3 msecs 90| 508 473 860 387 598 882 101 23 653 663 ... 89 write time:3 msecs 91| 659 552 678 856 300 414 0 721 810 819 ... 408 write time:3 msecs 92| 130 710 623 975 830 528 6 748 490 785 ... 788 write time:3 msecs 93| 687 166 616 842 256 172 319 391 549 695 ... 5 write time:3 msecs 94| 764 680 569 299 889 512 954 650 810 14 ... 291 write time:121 msecs 95| 114 536 527 938 393 978 650 171 781 899 ... 900 write time:55583 msecs 96| 544 203 157 338 925 390 501 593 581 766 ... 78 write time:55828 msecs 97| 529 331 837 710 822 710 920 204 60 876 ... 724 write time:62636 msecs
n2:~ # tail -f sle11sp3-read-Goldwyn-6.log iomaker -v -l -r -1 /mnt/shared/file 1000 buffer length/nCount = 1024 1000 1| 114 536 527 938 393 978 650 171 781 899 ... 171 read time:39049 msec 2| 114 536 527 938 393 978 650 171 781 899 ... 150 read time:45641 msec 3| 0 456 91 951 296 728 637 508 416 427 ... 646 read time:33121 msec 4| 529 331 837 710 822 710 920 204 60 876 ... 900 read time:37873 msec 5| 0 459 956 374 94 626 806 294 133 222 ... 900 read time:36044 msec