{"id":7230,"date":"2022-08-16T10:08:13","date_gmt":"2022-08-16T02:08:13","guid":{"rendered":"https:\/\/egonlin.com\/?p=7230"},"modified":"2024-03-19T21:55:25","modified_gmt":"2024-03-19T13:55:25","slug":"%e7%a3%81%e7%9b%98%e9%a1%ba%e5%ba%8fio%e4%b8%8e%e9%9a%8f%e6%9c%baio","status":"publish","type":"post","link":"https:\/\/egonlin.com\/?p=7230","title":{"rendered":"\u7b2c\u4e94\u8282\uff1a\u78c1\u76d8\u987a\u5e8fIO\u4e0e\u968f\u673aIO"},"content":{"rendered":"

1.\u78c1\u76d8\u7684\u57fa\u672c\u6982\u5ff5<\/h1>\n

\u2003\u76d8\u7247\u4e0e\u76d8\u9762 : \u4e00\u5757\u786c\u76d8\u4e00\u822c\u6709\u591a\u5757\u76d8\u7247,\u76d8\u7247\u5206\u4e3a\u4e0a\u4e0b\u4e24\u9762,\u5176\u4e2d\u6709\u6548\u9762\u79f0\u4e3a\u76d8\u9762(\u4e00\u822c\u4e0a\u4e0b\u90fd\u6709\u6548),\u76d8\u7247\u6570\u4e00\u822c\u4e0e\u78c1\u5934\u6570\u76f8\u7b49.\u4e5f\u5c31\u662f\u8bf4:\u78c1\u5934\u6570 = \u76d8\u9762\u6570 = \u76d8\u7247\u6570*2
\n\u2003\u78c1\u5934 : \u78c1\u5934\u5207\u6362\u78c1\u9053\u8bfb\u5199\u6570\u636e\u65f6\u901a\u8fc7\u673a\u68b0\u8bbe\u5907\u5b9e\u73b0\u7684,\u901f\u5ea6\u8f83\u6162;\u800c\u78c1\u5934\u5207\u6362\u76d8\u9762\u8bfb\u5199\u6570\u636e\u662f\u901a\u8fc7\u7535\u5b50\u8bbe\u5907\u5b9e\u73b0\u7684,\u901f\u5ea6\u8f83\u5feb,\u56e0\u6b64\u78c1\u5934\u4e00\u822c\u662f\u5148\u8bfb\u5199\u5b8c\u67f1\u9762\u540e\u624d\u5f00\u59cb\u5bfb\u9053\u7684(\u4e0d\u7528\u5207\u6362\u78c1\u9053),\u8fd9\u6837\u78c1\u76d8\u8bfb\u5199\u6548\u7387\u66f4\u5feb.
\n

\"file\"<\/div>
\n\u2003\u78c1\u9053 : \u78c1\u9053\u5c31\u662f\u4ee5\u4e2d\u95f4\u8f74\u4e3a\u5706\u5fc3\u7684\u5706\u73af,\u76d8\u9762\u6709\u591a\u4e2a\u78c1\u9053,\u78c1\u9053\u4e4b\u95f4\u6709\u95f4\u9699,\u78c1\u9053\u4e5f\u5c31\u662f\u78c1\u76d8\u5b58\u50a8\u6570\u636e\u7684\u4ecb\u8d28.\u78c1\u9053\u4e0a\u5e03\u6709\u4e00\u5c42\u78c1\u4ecb\u8d28,\u901a\u8fc7\u78c1\u5934\u53ef\u4ee5\u4f7f\u78c1\u4ecb\u8d28\u7684\u6781\u6027\u8f6c\u6362\u4e3a\u64cd\u4f5c\u7cfb\u7edf\u7684\u6570\u636e\u4fe1\u53f7(\u5373\u78c1\u76d8\u7684\u8bfb,\u78c1\u76d8\u5199\u521a\u597d\u76f8\u53cd)
\n\u2003\u67f1\u9762 : \u78c1\u76d8\u4e2d\u4e0d\u540c\u76d8\u9762\u4e2d\u534a\u5f84\u76f8\u540c\u7684\u78c1\u9053\u7ec4\u6210\u7684. \u4e5f\u5c31\u662f\u8bf4 \u67f1\u9762\u6570 = \u67d0\u4e2a\u76d8\u9762\u7684\u78c1\u9053\u6570
\n\u2003\u6247\u533a : \u5355\u4e2a\u78c1\u9053\u5c31\u662f\u591a\u4e2a\u5f27\u5f62\u6247\u533a\u7ec4\u6210\u7684,\u5f53\u7136\u67d0\u4e2a\u76d8\u9762\u4e0a\u7684\u6bcf\u4e2a\u78c1\u9053\u62e5\u6709\u7684\u6247\u533a\u6570\u91cf\u662f\u76f8\u7b49.\u6247\u533a\u662f\u786c\u76d8\/\u78c1\u76d8\u7684\u6700\u5c0f\u5b58\u50a8\u5355\u5143.\u4f46\u4e0d\u662f\u6587\u4ef6\u7cfb\u7edf\u7684\u6700\u5c0f\u5b58\u50a8\u5355\u5143(\u6587\u4ef6\u7cfb\u7edf\u7684\u6700\u5c0f\u5b58\u50a8\u5355\u5143\u662fblock,\u53ef\u4ee5\u4eba\u4e3a\u8bbe\u5b9a).\u4e00\u822c\u6247\u533a\u5927\u5c0f\u4e3a512bytes(\u6700\u65b0\u7684\u786c\u76d8\u597d\u50cf\u53ef\u4ee5\u67094K\u4e86)
\n
\"file\"<\/div><\/p>\n

2.\u78c1\u76d8\u7684\u8bfb\u5199\u65b9\u5f0f<\/h1>\n

\u2003\u6587\u4ef6\u7cfb\u7edf\u4e0d\u662f\u4e00\u4e2a\u6247\u533a,\u4e00\u4e2a\u6247\u533a\u7684\u6765\u8bfb\u6570\u636e,\u592a\u6162\u4e86,\u6240\u6709\u6709\u4e86block(\u5757)\u7684\u6982\u5ff5,\u5b83\u662f\u4e00\u4e2a\u5757\u4e00\u4e2a\u5757\u7684\u8bfb\u53d6\u7684.block\u624d\u662f\u6587\u4ef6\u5b58\u53d6\u7684\u6700\u5c0f\u5355\u4f4d.
\n\u2003\u4e00\u4e2ablock\u5757\u4e2d\u6247\u533a\u7684\u4e2a\u6570\u4f9d\u6587\u4ef6\u7cfb\u7edf\u800c\u4e0d\u540c,\u5982\u4e00\u4e2ablock\u67098\u4e2a\u6247\u533a,\u90a3\u4e00\u4e2ablock\u5757\u7684\u5927\u5c0f\u4e3a4K.<\/p>\n

3.\u78c1\u76d8\u8bfb\u53d6\u65f6\u95f4<\/h1>\n

\u5bfb\u9053\u65f6\u95f4 : \u8868\u793a\u78c1\u5934\u5728\u4e0d\u540c\u78c1\u9053\u4e4b\u95f4\u79fb\u52a8\u7684\u65f6\u95f4
\n\u65cb\u8f6c\u5ef6\u8fdf : \u8868\u793a\u5728\u78c1\u9053\u627e\u9053\u65f6,\u4e2d\u8f74\u5e26\u52a8\u76d8\u9762\u65cb\u8f6c\u5230\u5408\u9002\u7684\u6247\u533a\u5f00\u5934\u5904
\n\u4f20\u8f93\u65f6\u95f4 : \u8868\u793a\u76d8\u9762\u7ee7\u7eed\u8f6c\u52a8,\u5b9e\u9645\u8bfb\u53d6\u6570\u636e\u7684\u65f6\u95f4
\n7200\u8f6c\/min,\u65cb\u8f6c\u4e00\u5468\u9700\u89818.33ms
\n\u5bfb\u9053\u7ea610ms<\/p>\n

\u78c1\u5934\u4e0d\u52a8,\u76d8\u52a8\u7684\u8fc7\u7a0b
\n\u78c1\u76d8\u7684\u8f6c\u901f;5400\u8f6c,7200\u8f6c,10000\u8f6c,15000\u8f6c \u6bcf\u5206\u949f<\/p>\n

4.\u987a\u5e8f\u8bfb\u5199\u4e0e\u968f\u673a\u8bfb\u5199<\/h1>\n

\u5bf9\u4e8e\u4ece\u78c1\u76d8\u4e2d\u8bfb\u53d6\u548c\u5199\u5165\u6570\u636e\u7684\u64cd\u4f5c\uff0c\u53eb\u505a\u78c1\u76d8IO\uff0c\u5206\u4e24\u79cd\u60c5\u51b5\uff1a
\n\u968f\u673aIO\u5c31\u662f\u8bfb\u5199\u7684\u5185\u5bb9\u5206\u6563\u5728\u78c1\u76d8\u7684\u4e0d\u540c\u4f4d\u7f6e\uff0c\u9700\u8981\u6765\u56de\u67e5\u627e\u6240\u4ee5\u6548\u7387\u4f4e\uff1b
\n\u987a\u5e8fIO\u5c31\u662f\u8bfb\u5199\u7684\u5185\u5bb9\u96c6\u4e2d\u5b58\u50a8\u5728\u78c1\u76d8\u7684\u4e00\u5757\uff0c\u4ece\u524d\u5230\u540e\u4f9d\u6b21\u8bfb\u53d6\uff0c\u514d\u53bb\u4e86\u67e5\u627e\u7684\u8fc7\u7a0b\uff0c\u6240\u4ee5\u6548\u7387\u9ad8\u3002<\/p>\n

\u8be6\u89e3\u5982\u4e0b\uff1a
\n\u2003\u5f53\u8bfb\u53d6\u7b2c\u4e00\u4e2ablock\u65f6,\u8981\u7ecf\u5386\u5bfb\u9053,\u65cb\u8f6c\u5ef6\u8fdf,\u4f20\u8f93\u4e09\u4e2a\u6b65\u9aa4\u624d\u80fd\u8bfb\u53d6\u5b8c\u8fd9\u4e2ablock\u7684\u6570\u636e.\u800c\u5bf9\u4e8e\u4e0b\u4e00\u4e2ablock,\u5982\u679c\u5b83\u5728\u78c1\u76d8\u7684\u67d0\u4e2a\u4f4d\u7f6e,\u8bbf\u95ee\u5b83\u4f1a\u540c\u6837\u7ecf\u5386\u5bfb\u9053,\u65cb\u8f6c,\u5ef6\u65f6,\u4f20\u8f93\u624d\u80fd\u8bfb\u53d6\u5b8c\u8fd9\u4e2ablock\u7684\u6570\u636e, \u6211\u4eec\u628a\u8fd9\u79cd\u65b9\u5f0f\u7684IO\u53eb\u505a\u968f\u673aIO.\u4f46\u662f\u5982\u679c\u8fd9\u4e2ablock\u7684\u8d77\u59cb\u6247\u533a\u521a\u597d\u5728\u6211\u521a\u624d\u8bbf\u95ee\u7684block\u7684\u540e\u9762,\u78c1\u5934\u5c31\u80fd\u7acb\u523b\u9047\u5230.\u4e0d\u9700\u7b49\u5f85,\u76f4\u63a5\u4f20\u8f93.\u8fd9\u79cdIO\u5c31\u53eb\u987a\u5e8fIO.
\nps\uff1a\u2003\u53ea\u6709\u987a\u5e8f\u5199\u624d\u80fd\u4fdd\u8bc1\u987a\u5e8f\u8bfb<\/p>\n

\u673a\u68b0\u78c1\u76d8\u7684\u987a\u5e8fIO\u548c\u968f\u673aIO\u7684\u6027\u80fd\u5dee\u5f02\u5de8\u5927\u3002
\n\u987a\u5e8fIO\u65f6\u7f13\u5b58\u547d\u4e2d\u7387\u9ad8\uff0c\u8282\u7701\u5bfb\u9053\u65f6\u95f4\u3002
\n\u968f\u673aIO\u4e0d\u505c\u5bfb\u5740\uff0c\u7f13\u5b58\u5931\u6548\u3002<\/p>\n

\u5e94\u7528\uff1a
\n\u590d\u5236\u6587\u4ef6\u5939\uff1a\u590d\u5236\u6587\u4ef6\u5939\u7684\u65f6\u5019\uff0c\u5982\u679c\u5305\u542b\u8bb8\u591a\u5c0f\u6587\u4ef6\uff0c\u590d\u5236\u901f\u5ea6\u5f88\u6162\u3002\u4e3a\u4e86\u63d0\u9ad8\u590d\u5236\u901f\u5ea6\uff0c\u53ef\u4ee5\u5148\u6253\u4e00\u4e2a\u5305\uff0c\u6253\u5305\u628a\u6587\u4ef6\u5939\u53d8\u6210\u4e00\u4e2a\u5927\u6587\u4ef6\u3002\u518d\u590d\u5236\u7684\u65f6\u5019\uff0c\u53d8\u6210\u987a\u5e8fIO<\/p>\n

\u6570\u636e\u5e93\u4e8b\u52a1\uff1a\u6570\u636e\u5e93\u4e8b\u52a1\u5728\u5b9e\u73b0\u7684\u65f6\u5019\uff0c\u8981\u4fdd\u8bc1\u6570\u636e\u843d\u76d8\u6210\u529f\u624d\u80fd\u8fd4\u56de\u3002\u843d\u76d8\u662f\u6307\u843d\u76d8\u5230\u81ea\u5df1\u7684\u4e8b\u52a1\u65e5\u5fd7\u6587\u4ef6\u91cc\u5c31\u8fd4\u56de\u6210\u529f\uff0c\u800c\u4e0d\u662f\u76f4\u63a5\u5199\u5165\u5230\u6570\u636e\u5e93\u8868\u6587\u4ef6\u91cc\u3002\u539f\u56e0\u8fd8\u662f\u78c1\u76d8\u8bfb\u5199\u6027\u80fd\u95ee\u9898\uff0c\u4e8b\u52a1\u53ea\u8981\u843d\u76d8\u6210\u529f\u5c31\u53ef\u4ee5\uff0c\u5199\u5230\u54ea\u91cc\u4e0d\u91cd\u8981\u3002\u5199\u5230\u6570\u636e\u6587\u4ef6\u5c31\u53d8\u6210\u968f\u673aIO\u4e86\u3002\u5982\u679c\u5199\u5230\u4e00\u4e2a\u65e5\u5fd7\u6587\u4ef6\u4e2d\uff0c\u5c31\u662f\u987a\u5e8fIO<\/p>\n

MySql\u7684B+\u6811\uff1a\u65e0\u8bba\u662f\u987a\u5e8fIO\u8fd8\u662f\u968f\u673aIO\uff0c\u589e\u52a0\u6bcf\u6b21IO\u7684\u5355\u4f4d\uff0c\u6027\u80fd\u90fd\u4f1a\u4e0a\u6da8\u3002B+\u6811\u8282\u70b9\u66f4\u5927\uff0cIO\u8d77\u6765\u78c1\u76d8\u5de5\u4f5c\u66f4\u8212\u670d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

1.\u78c1\u76d8\u7684\u57fa\u672c\u6982\u5ff5 \u2003\u76d8\u7247\u4e0e\u76d8\u9762 : \u4e00\u5757\u786c\u76d8\u4e00\u822c\u6709\u591a\u5757\u76d8\u7247,\u76d8\u7247\u5206\u4e3a\u4e0a\u4e0b\u4e24\u9762,\u5176\u4e2d\u6709\u6548\u9762\u79f0\u4e3a\u76d8\u9762(\u4e00\u822c\u4e0a\u4e0b\u90fd […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/7230"}],"collection":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7230"}],"version-history":[{"count":1,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/7230\/revisions"}],"predecessor-version":[{"id":8677,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/7230\/revisions\/8677"}],"wp:attachment":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7230"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7230"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7230"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}