{"id":41600,"date":"2023-07-16T03:48:33","date_gmt":"2024-02-25T11:31:02","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/postgresql%e7%9a%84%e5%86%85%e5%ad%98%e8%ae%be%e8%ae%a1\/"},"modified":"2024-04-30T13:48:49","modified_gmt":"2024-04-30T05:48:49","slug":"postgresql%e7%9a%84%e5%86%85%e5%ad%98%e8%ae%be%e8%ae%a1","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/postgresql%e7%9a%84%e5%86%85%e5%ad%98%e8%ae%be%e8%ae%a1\/","title":{"rendered":"PostgreSQL\u7684\u5185\u5b58\u8bbe\u8ba1"},"content":{"rendered":"<h1>\u9996\u5148<\/h1>\n<p>\u5173\u4e8e\u8fdb\u884cPostgreSQL\u8bbe\u8ba1\u65f6\u5bf9\u4e8e\u5185\u5b58\u7684\u8003\u8651\uff0c\u6211\u4eec\u603b\u7ed3\u5982\u4e0b\u3002<br \/>\n\u5728PostgreSQL\u4e2d\u4f7f\u7528\u7684\u5185\u5b58\u53ef\u4ee5\u5927\u81f4\u5206\u4e3a\u4e24\u79cd\u7c7b\u578b\uff0c\u4e00\u79cd\u662f\u5728\u6574\u4e2aPostgreSQL\u670d\u52a1\u5668\u8fdb\u7a0b\u4e2d\u5171\u4eab\u7684\u5171\u4eab\u5185\u5b58\uff0c\u53e6\u4e00\u79cd\u662f\u5728\u540e\u7aef\u8fdb\u7a0b\u4e2d\u5206\u914d\u7684\u8fdb\u7a0b\u5185\u5b58\u3002<\/p>\n<p>\u5728\u4f7f\u7528PostgreSQL\u65f6\uff0c\u6240\u4f7f\u7528\u7684\u5185\u5b58\u5305\u62ec\u5171\u4eab\u5185\u5b58\u548c\u8fdb\u7a0b\u5185\u5b58\u3002<\/p>\n<p>\u672c\u7bc7\u6587\u7ae0\u7740\u91cd\u4ecb\u7ecd\u4e86\u5171\u4eab\u5185\u5b58\u7f13\u51b2\u533a(shared_buffers)\u548c\u8fdb\u7a0b\u5185\u5b58\u5de5\u4f5c\u5185\u5b58(work_mem)\u7b49\u91cd\u8981\u7684\u5185\u5bb9\u3002<\/p>\n<h2>\u5171\u4eab\u7f13\u51b2\u533a(shared_buffers)<\/h2>\n<p>\u5171\u4eab\u7f13\u51b2\u533a\u7528\u4e8e\u4ee5\u9875\u9762\u4e3a\u5355\u4f4d\u7f13\u5b58\u8868\u548c\u7d22\u5f15\u7684\u6570\u636e\u3002\u5728\u6570\u636e\u8bbf\u95ee\u65f6\uff0c\u5c06\u6570\u636e\u5e93\u6587\u4ef6\u9010\u9875\u5730\u5c55\u5f00\u5230\u5185\u5b58\u4e2d\uff0c\u5e76\u63d0\u9ad8\u4e86\u91cd\u590d\u8bbf\u95ee\u6570\u636e\u65f6\u7684\u5904\u7406\u6027\u80fd\u3002<\/p>\n<p>\u7136\u800c\uff0c\u5e76\u4e0d\u662f\u8bf4\u5171\u4eab\u7f13\u51b2\u533a\u8d8a\u5927\u6027\u80fd\u5c31\u8d8a\u597d\uff0c\u5f53\u7f13\u51b2\u533a\u5927\u5c0f\u589e\u52a0\u65f6\uff0c\u4f1a\u5bfc\u81f4\u7f13\u51b2\u533a\u641c\u7d22\u65f6\u95f4\u8fc7\u957f\uff0c\u5e76\u4e14\u589e\u52a0\u4e86\u68c0\u67e5\u70b9\u5904\u7406\u7684\u8d1f\u62c5\u3002<\/p>\n<p>\u6b64\u5916\uff0c\u5728PostgreSQL\u4e2d\uff0c\u5bf9\u4e8e\u5b89\u88c5\u4e861GB\u6216\u66f4\u591a\u5185\u5b58\u7684\u670d\u52a1\u5668\uff0c\u63a8\u8350\u8bbe\u7f6e\u5185\u5b58\u7684\u7ea625\uff05\u4f5c\u4e3a\u51c6\u5219\u3002<\/p>\n<p>\u4f30\u8ba1\u5c3a\u5bf8 = \u670d\u52a1\u5668\u5185\u5b58\u5bb9\u91cf * 25 \/ 100<\/p>\n<h2>\u5de5\u4f5c\u5185\u5b58 (work_mem)<\/h2>\n<p>\u589e\u52a0\u4f5c\u4e1a\u5185\u5b58\u4e2d\u7684\u201cwork_mem\u201d\u53c2\u6570\uff0c\u53ef\u4ee5\u5728\u5185\u5b58\u4e2d\u6267\u884c\u6392\u5e8f\u548c\u54c8\u5e0c\u64cd\u4f5c\uff0c\u4ece\u800c\u57fa\u672c\u4e0a\u63d0\u9ad8\u6027\u80fd\u3002\u4f46\u5728\u590d\u6742\u7684\u67e5\u8be2\u4e2d\uff0c\u6392\u5e8f\u548c\u54c8\u5e0c\u64cd\u4f5c\u53ef\u80fd\u4f1a\u5728\u67e5\u8be2\u4e2d\u591a\u6b21\u6267\u884c\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u9700\u8981\u6bd4work_mem\u5927\u5c0f\u591a\u51e0\u500d\u7684\u5185\u5b58\u3002\u6b64\u5916\uff0cwork_mem\u4e0e\u5ba2\u6237\u7aef\u540c\u65f6\u8fde\u63a5\u6570\u6210\u6b63\u6bd4\uff0c\u5e76\u4e14\u8fd8\u4f1a\u6d88\u8017\u8be5\u6570\u91cf\u500d\u6570\u7684\u7269\u7406\u5185\u5b58\u3002\u56e0\u6b64\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u7531\u4e8e\u5185\u5b58\u4e0d\u8db3\u800c\u53d1\u751f\u4ea4\u6362\uff0c\u53cd\u800c\u4f1a\u5bfc\u81f4\u6027\u80fd\u53d8\u5dee\u3002<\/p>\n<p>\u89c1\u89e3\u5927\u5c0f = \u670d\u52a1\u5668\u5185\u5b58\u5bb9\u91cf &#8211; (\u5171\u4eab\u7f13\u51b2\u533a + \u5176\u4ed6(\u203b)) \/ \u6700\u5927\u8fde\u63a5\u6570<\/p>\n<p>(\u203b)\u64cd\u4f5c\u7cfb\u7edf\u53ca\u4e2d\u95f4\u4ef6\u6240\u6d88\u8017\u7684\u5185\u5b58\u7b49\u8d44\u6e90<\/p>\n<h2>\u5176\u4ed6<\/h2>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">max_connections\u306f\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u5bfe\u3059\u308b\u540c\u6642\u63a5\u7d9a\u6570\u53ca\u3073PostgreSQL\u306e\u30b9\u30fc\u30d1\u30e6\u30fc\u30b6\u306b\u3088\u308b\u63a5\u7d9a(\u203b)\u3092\u8003\u616e\u3057\u3066\u8a2d\u8a08\u3057\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">(\u203b)superuser_reserved_connections<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul 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class=\"post-ul\">\u3055\u304f\u3063\u3068\u8a2d\u5b9a\u5024\u898b\u7a4d\u3082\u308b\u306a\u3089\u3001PgTune\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148 \u5173\u4e8e\u8fdb\u884cPostgreSQL\u8bbe\u8ba1\u65f6\u5bf9\u4e8e\u5185\u5b58\u7684\u8003\u8651\uff0c\u6211\u4eec\u603b\u7ed3\u5982\u4e0b\u3002 \u5728PostgreSQL\u4e2d\u4f7f\u7528\u7684\u5185\u5b58\u53ef\u4ee5 [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-41600","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>PostgreSQL\u7684\u5185\u5b58\u8bbe\u8ba1 - Blog - Silicon 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