{"id":205967,"date":"2025-06-12T10:49:33","date_gmt":"2025-06-12T02:49:33","guid":{"rendered":"https:\/\/server.hk\/cnblog\/205967\/"},"modified":"2025-06-12T10:49:33","modified_gmt":"2025-06-12T02:49:33","slug":"%e5%a6%82%e4%bd%95%e8%8e%b7%e5%8f%96-go-%e4%b8%ad-gc-%e7%9a%84%e6%b6%88%e8%80%97%e6%97%b6%e9%97%b4%e5%92%8c%e6%ac%a1%e6%95%b0%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/205967\/","title":{"rendered":"\u5982\u4f55\u83b7\u53d6 Go \u4e2d GC \u7684\u6d88\u8017\u65f6\u95f4\u548c\u6b21\u6570\uff1f"},"content":{"rendered":"<p>\u672c\u7bc7\u6587\u7ae0\u4e3b\u8981\u662f\u7ed3\u5408\u6211\u4e4b\u524d\u9762\u8bd5\u7684\u5404\u79cd\u7ecf\u5386\u548c\u5b9e\u6218\u5f00\u53d1\u4e2d\u9047\u5230\u7684\u95ee\u9898\u89e3\u51b3\u7ecf\u9a8c\u6574\u7406\u7684\uff0c\u5e0c\u671b\u8fd9\u7bc7\u300a\u5982\u4f55\u83b7\u53d6 Go \u4e2d GC \u7684\u6d88\u8017\u65f6\u95f4\u548c\u6b21\u6570\uff1f\u300b\u5bf9\u4f60\u6709\u5f88\u5927\u5e2e\u52a9\uff01\u6b22\u8fce\u6536\u85cf\uff0c\u5206\u4eab\u7ed9\u66f4\u591a\u7684\u9700\u8981\u7684\u670b\u53cb\u5b66\u4e60~,<br \/>\n<img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241029\/17302138676720f7ebf1889.jpg\" class=\"aligncenter\">,<br \/>\n<strong>\u5728 go \u4e2d\u83b7\u53d6 gc \u6d88\u8017\u65f6\u95f4<\/strong>,\u83b7\u53d6 gc \u7684\u6d88\u8017\u65f6\u95f4\u4ee5\u53ca\u6b21\u6570\u662f\u4f18\u5316 go \u7a0b\u5e8f\u6027\u80fd\u7684\u5173\u952e\u6307\u6807\u3002\u901a\u8fc7 runtime \u5305\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5730\u83b7\u53d6\u8fd9\u4e9b\u4fe1\u606f\u3002,\u5728 runtime \u5305\u4e2d\uff0cgc \u7684\u6d88\u8017\u65f6\u95f4\u5b58\u50a8\u5728 pausetotalns \u5b57\u6bb5\u4e2d\uff0c\u8be5\u5b57\u6bb5\u8868\u793a gc \u6682\u505c\u65f6\u95f4\u603b\u548c\u3002\u4e3a\u4e86\u83b7\u53d6\u6b64\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a,pausens \u5b57\u6bb5\u8868\u793a\u4e0a\u6b21 gc \u6682\u505c\u7684\u65f6\u95f4\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4ee3\u7801\u83b7\u53d6\uff1a,\u6b64\u5916\uff0cnumgc \u5b57\u6bb5\u8868\u793a gc \u6267\u884c\u7684\u6b21\u6570\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4ee3\u7801\u83b7\u53d6\uff1a,\u4e3a\u4e86\u66f4\u597d\u5730\u4e86\u89e3 gc \u7684\u6027\u80fd\uff0c\u8fd8\u63d0\u4f9b\u4e86\u5176\u4ed6\u5b57\u6bb5\uff0c\u4f8b\u5982\uff1a,\u8fd9\u4e9b\u5b57\u6bb5\u53ef\u4ee5\u901a\u8fc7\u8c03\u7528 runtime.readmemstats() \u51fd\u6570\u83b7\u53d6\u3002,\u8bf7\u6ce8\u610f\uff0c\u8fd9\u4e9b\u503c\u90fd\u662f\u6beb\u5fae\u79d2\u7ea7\uff08\u7eb3\u79d2\uff09\u7684\u3002\u56e0\u6b64\uff0c\u5728\u663e\u793a\u6216\u5904\u7406\u8fd9\u4e9b\u503c\u65f6\uff0c\u9700\u8981\u9002\u5f53\u8f6c\u6362\u3002,\u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300a\u5982\u4f55\u83b7\u53d6 Go \u4e2d GC \u7684\u6d88\u8017\u65f6\u95f4\u548c\u6b21\u6570\uff1f\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u77e5\u8bc6\u70b9\uff01,nextgc\uff1a\u4e0b\u6b21 gc \u9884\u8ba1\u56de\u6536\u7684\u5185\u5b58\u91cf,lastgc\uff1a\u8ddd\u79bb\u4e0a\u6b21 gc \u7684\u65f6\u95f4,gcsys\uff1a\u4e3a gc \u5143\u6570\u636e\u5206\u914d\u7684\u5185\u5b58\u91cf,\u5728 go \u4e2d\u83b7\u53d6 gc \u6d88\u8017\u65f6\u95f4,\u672c\u7bc7\u6587\u7ae0\u4e3b\u8981\u662f\u7ed3\u5408\u6211\u4e4b\u524d\u9762\u8bd5\u7684\u5404\u79cd\u7ecf\u5386\u548c\u5b9e\u6218\u5f00\u53d1\u4e2d\u9047\u5230\u7684\u95ee\u9898\u89e3\u51b3\u7ecf\u9a8c\u6574\u7406\u7684\uff0c\u5e0c\u671b\u8fd9\u7bc7\u300a\u5982\u4f55\u83b7\u53d6 Go \u4e2d GC \u7684\u6d88\u8017\u65f6\u95f4\u548c\u6b21\u6570\uff1f\u300b\u5bf9\u4f60\u6709\u5f88\u5927\u5e2e\u52a9\uff01\u6b22\u8fce\u6536\u85cf\uff0c\u5206\u4eab\u7ed9\u66f4\u591a\u7684\u9700\u8981\u7684\u670b\u53cb\u5b66\u4e60~,<br \/>\n<b><\/b> <\/p>\n<p>\u5f53\u524d\u4f4d\u7f6e\uff1a <span>&gt;<\/span>  <span>&gt;<\/span>  <span>&gt;<\/span>  <span>&gt;<\/span> <span>\u5982\u4f55\u83b7\u53d6 Go \u4e2d GC \u7684\u6d88\u8017\u65f6\u95f4\u548c\u6b21\u6570\uff1f<\/span><\/p>\n<h1>\u5982\u4f55\u83b7\u53d6 Go \u4e2d GC \u7684\u6d88\u8017\u65f6\u95f4\u548c\u6b21\u6570\uff1f<\/h1>\n<p><span>\u6765\u6e90\uff1aphp<\/span><br \/>\n<span>2024-10-29 22:58:03<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u672c\u7bc7\u6587\u7ae0\u4e3b\u8981\u662f\u7ed3\u5408\u6211\u4e4b\u524d\u9762\u8bd5\u7684\u5404\u79cd\u7ecf\u5386\u548c\u5b9e\u6218\u5f00\u53d1\u4e2d\u9047\u5230\u7684\u95ee\u9898\u89e3\u51b3\u7ecf\u9a8c\u6574\u7406\u7684\uff0c\u5e0c\u671b\u8fd9\u7bc7\u300a\u5982\u4f55\u83b7\u53d6 Go \u4e2d GC \u7684\u6d88\u8017\u65f6\u95f4\u548c\u6b21\u6570\uff1f\u300b\u5bf9\u4f60\u6709\u5f88\u5927\u5e2e\u52a9\uff01\u6b22\u8fce\u6536\u85cf\uff0c\u5206\u4eab\u7ed9\u66f4\u591a\u7684\u9700\u8981\u7684\u670b\u53cb\u5b66\u4e60~<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241029\/17302138676720f7ebf1889.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u5728 go \u4e2d\u83b7\u53d6 gc \u6d88\u8017\u65f6\u95f4<\/strong><\/p>\n<p>\u83b7\u53d6 gc \u7684\u6d88\u8017\u65f6\u95f4\u4ee5\u53ca\u6b21\u6570\u662f\u4f18\u5316 go \u7a0b\u5e8f\u6027\u80fd\u7684\u5173\u952e\u6307\u6807\u3002\u901a\u8fc7 runtime \u5305\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5730\u83b7\u53d6\u8fd9\u4e9b\u4fe1\u606f\u3002<\/p>\n<p>\u5728 runtime \u5305\u4e2d\uff0cgc \u7684\u6d88\u8017\u65f6\u95f4\u5b58\u50a8\u5728 pausetotalns \u5b57\u6bb5\u4e2d\uff0c\u8be5\u5b57\u6bb5\u8868\u793a gc \u6682\u505c\u65f6\u95f4\u603b\u548c\u3002\u4e3a\u4e86\u83b7\u53d6\u6b64\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre>pausetotalns := runtime.readmemstats().pausetotalns<\/pre>\n<p>pausens \u5b57\u6bb5\u8868\u793a\u4e0a\u6b21 gc \u6682\u505c\u7684\u65f6\u95f4\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4ee3\u7801\u83b7\u53d6\uff1a<\/p>\n<pre>pausens := runtime.readmemstats().pausens<\/pre>\n<p>\u6b64\u5916\uff0cnumgc \u5b57\u6bb5\u8868\u793a gc \u6267\u884c\u7684\u6b21\u6570\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4ee3\u7801\u83b7\u53d6\uff1a<\/p>\n<pre>numGC := runtime.ReadMemStats().NumGC<\/pre>\n<p>\u4e3a\u4e86\u66f4\u597d\u5730\u4e86\u89e3 gc \u7684\u6027\u80fd\uff0c\u8fd8\u63d0\u4f9b\u4e86\u5176\u4ed6\u5b57\u6bb5\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>lastgc\uff1a\u8ddd\u79bb\u4e0a\u6b21 gc \u7684\u65f6\u95f4<\/li>\n<li>nextgc\uff1a\u4e0b\u6b21 gc \u9884\u8ba1\u56de\u6536\u7684\u5185\u5b58\u91cf<\/li>\n<li>gcsys\uff1a\u4e3a gc \u5143\u6570\u636e\u5206\u914d\u7684\u5185\u5b58\u91cf<\/li>\n<\/ul>\n<p>\u8fd9\u4e9b\u5b57\u6bb5\u53ef\u4ee5\u901a\u8fc7\u8c03\u7528 runtime.readmemstats() \u51fd\u6570\u83b7\u53d6\u3002<\/p>\n<p>\u8bf7\u6ce8\u610f\uff0c\u8fd9\u4e9b\u503c\u90fd\u662f\u6beb\u5fae\u79d2\u7ea7\uff08\u7eb3\u79d2\uff09\u7684\u3002\u56e0\u6b64\uff0c\u5728\u663e\u793a\u6216\u5904\u7406\u8fd9\u4e9b\u503c\u65f6\uff0c\u9700\u8981\u9002\u5f53\u8f6c\u6362\u3002<\/p>\n<p>\u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300a\u5982\u4f55\u83b7\u53d6 Go \u4e2d GC \u7684\u6d88\u8017\u65f6\u95f4\u548c\u6b21\u6570\uff1f\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n<p> \u7248\u672c\u58f0\u660e \u672c\u6587\u8f6c\u8f7d\u4e8e\uff1aphp \u5982\u6709\u4fb5\u72af\uff0c\u8bf7\u8054\u7cfb \u5220\u9664  <\/p>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   \u82f9\u679c\u7535\u8111\u79fb\u52a8\u786c\u76d8\u6587\u4ef6\u663e\u793a\u4e0d\u5168\uff1f\n <\/dd>\n<\/dl>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   \u4e3a\u4ec0\u4e48 Java \u66f4\u504f\u7231 ZooKeeper \u800c Go \u66f4\u9752\u7750 Consul\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u7bc7\u6587\u7ae0\u4e3b\u8981\u662f\u7ed3\u5408\u6211\u4e4b\u524d\u9762\u8bd5\u7684\u5404&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-205967","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205967","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=205967"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205967\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=205967"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=205967"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=205967"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}