{"id":4090,"date":"2022-12-28T13:15:07","date_gmt":"2022-12-28T05:15:07","guid":{"rendered":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=4090"},"modified":"2022-12-28T13:15:07","modified_gmt":"2022-12-28T05:15:07","slug":"elasticsearch%e6%80%a7%e8%83%bd%e4%bc%98%e5%8c%96%e5%ae%9e%e8%b7%b5jvm%e8%b0%83%e4%bc%98es%e8%b0%83%e4%bc%98","status":"publish","type":"post","link":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=4090","title":{"rendered":"ElasticSearch\u6027\u80fd\u4f18\u5316\u5b9e\u8df5(JVM\u8c03\u4f18+ES\u8c03\u4f18)"},"content":{"rendered":"\n<p>\u539f\u6587\uff1a<a href=\"https:\/\/juejin.cn\/post\/7181325889299284023\">ElasticSearch\u6027\u80fd\u4f18\u5316\u5b9e\u8df5(JVM\u8c03\u4f18+ES\u8c03\u4f18) &#8211; \u6398\u91d1 (juejin.cn)<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/p3-juejin.byteimg.com\/tos-cn-i-k3u1fbpfcp\/8a64168bdeb64b34a9d778c2d4454783~tplv-k3u1fbpfcp-zoom-crop-mark:3024:3024:3024:1702.awebp?\" alt=\"ElasticSearch\u6027\u80fd\u4f18\u5316\u5b9e\u8df5(JVM\u8c03\u4f18+ES\u8c03\u4f18)\"\/><\/figure>\n\n\n\n<p>\u5f00\u542f\u6398\u91d1\u6210\u957f\u4e4b\u65c5\uff01\u8fd9\u662f\u6211\u53c2\u4e0e\u300c\u6398\u91d1\u65e5\u65b0\u8ba1\u5212 \u00b7 12 \u6708\u66f4\u6587\u6311\u6218\u300d\u7684\u7b2c4\u5929\uff0c<a href=\"https:\/\/juejin.cn\/post\/7167294154827890702\" target=\"_blank\" rel=\"noreferrer noopener\">\u70b9\u51fb\u67e5\u770b\u6d3b\u52a8\u8be6\u60c5<\/a><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u4e00\u3001\u80cc\u666f\u4ecb\u7ecd<\/h1>\n\n\n\n<p>\u5bf9\u516c\u53f8\u7684 ELK \u65e5\u5fd7\u7cfb\u7edf\u505a\u8fc7\u6027\u80fd\u4f18\u5316\uff0c\u4e5f\u5bf9 SkyWalking \u4f7f\u7528\u7684 ES \u5b58\u50a8\u8fdb\u884c\u8fc7\u6027\u80fd\u4f18\u5316\uff0c\u5728\u6b64\u505a\u4e00\u4e9b\u603b\u7ed3\u3002\u672c\u7bc7\u4e3b\u8981\u662f\u8bb2 ES \u5728 ELK \u67b6\u6784\u4e2d\u4f5c\u4e3a\u65e5\u5fd7\u5b58\u50a8\u65f6\u7684\u6027\u80fd\u4f18\u5316\u65b9\u6848\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">ELK \u67b6\u6784\u4f5c\u4e3a\u65e5\u5fd7\u5b58\u50a8\u65b9\u6848<\/h4>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/p3-juejin.byteimg.com\/tos-cn-i-k3u1fbpfcp\/d931e2399f264e16a9c665a11d921fe1~tplv-k3u1fbpfcp-zoom-in-crop-mark:4536:0:0:0.awebp\" alt=\"ELK\u65e5\u5fd7\u67b6\u6784.png\"\/><\/figure>\n\n\n\n<h1 class=\"wp-block-heading\">\u4e8c\u3001\u73b0\u72b6\u5206\u6790<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">1. \u7248\u672c\u53ca\u786c\u4ef6\u914d\u7f6e<\/h2>\n\n\n\n<ul>\n<li><strong>JDK<\/strong>\uff1aJDK1.8_171-b11 (64\u4f4d)<\/li>\n\n\n\n<li><strong>ES\u96c6\u7fa4<\/strong>\uff1a\u75313\u53f016\u683832G\u7684\u865a\u62df\u673a\u90e8\u7f72 ES \u96c6\u7fa4\uff0c\u6bcf\u4e2a\u8282\u70b9\u5206\u914d20G\u5806\u5185\u5b58<\/li>\n\n\n\n<li><strong>ELK\u7248\u672c<\/strong>\uff1a6.3.0<\/li>\n\n\n\n<li><strong>\u5783\u573e\u56de\u6536\u5668<\/strong>\uff1aES \u9ed8\u8ba4\u6307\u5b9a\u7684\u8001\u5e74\u4ee3\uff08CMS\uff09+ \u65b0\u751f\u4ee3\uff08ParNew\uff09<\/li>\n\n\n\n<li><strong>\u64cd\u4f5c\u7cfb\u7edf<\/strong>\uff1aCentOS Linux release 7.4.1708(Core)<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">2. \u6027\u80fd\u95ee\u9898<\/h2>\n\n\n\n<p>\u968f\u7740\u63a5\u5165ELK\u7684\u5e94\u7528\u8d8a\u6765\u8d8a\u591a\uff0c<strong>\u6bcf\u65e5\u65b0\u589e\u7d22\u5f15\u7ea6 230 \u4e2a\uff0c\u65b0\u589e document \u7ea6 3000\u4e07\u5230 5000\u4e07<\/strong>\u3002<\/p>\n\n\n\n<p>\u6bcf\u65e5\u4e0a\u5348\u548c\u4e0b\u5348\u662f\u65e5\u5fd7\u4e0a\u4f20\u9ad8\u5cf0\u671f\uff0c\u5728 Kibana \u4e0a\u67e5\u770b\u65e5\u5fd7\uff0c\u53d1\u73b0\u95ee\u9898\uff1a&nbsp;<strong>(1) \u65e5\u5fd7\u4f1a\u6709 5-40 \u5206\u949f\u7684\u5ef6\u8fdf<\/strong>&nbsp;<strong>(2) \u6709\u5f88\u591a\u65e5\u5fd7\u4e22\u5931\uff0c\u65e0\u6cd5\u67e5\u5230<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3. \u95ee\u9898\u5206\u6790<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">3.1 \u65e5\u5fd7\u5ef6\u8fdf<\/h3>\n\n\n\n<h5 class=\"wp-block-heading\">\u9996\u5148\u4e86\u89e3\u6e05\u695a\uff1a\u6570\u636e\u4ec0\u4e48\u65f6\u5019\u53ef\u4ee5\u88ab\u67e5\u5230\uff1f<\/h5>\n\n\n\n<p>\u6570\u636e\u5148\u662f\u5b58\u653e\u5728 ES \u7684\u5185\u5b58 buffer\uff0c\u7136\u540e\u6267\u884c refresh \u64cd\u4f5c\u5199\u5165\u5230\u64cd\u4f5c\u7cfb\u7edf\u7684\u5185\u5b58\u7f13\u5b58 os cache\uff0c\u6b64\u540e\u6570\u636e\u5c31\u53ef\u4ee5\u88ab\u641c\u7d22\u5230\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\uff0c\u65e5\u5fd7\u5ef6\u8fdf\u53ef\u80fd\u662f\u6211\u4eec\u7684\u6570\u636e\u79ef\u538b\u5728 buffer \u4e2d\u6ca1\u6709\u8fdb\u5165 os cache \u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.2\u65e5\u5fd7\u4e22\u5931<\/h3>\n\n\n\n<p>\u67e5\u770b\u65e5\u5fd7\u53d1\u73b0\u5f88\u591a write \u62d2\u7edd\u6267\u884c\u7684\u60c5\u51b5<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/p3-juejin.byteimg.com\/tos-cn-i-k3u1fbpfcp\/de25400d6a93487da9e9b7ff0005e49e~tplv-k3u1fbpfcp-zoom-in-crop-mark:4536:0:0:0.awebp\" alt=\"write \u7ebf\u7a0b\u6c60\u62d2\u7edd\u4efb\u52a1\u7684\u65e5\u5fd7.png\"\/><\/figure>\n\n\n\n<p>\u4ece\u65e5\u5fd7\u4e2d\u53ef\u4ee5\u770b\u51fa ES \u7684 write \u7ebf\u7a0b\u6c60\u5df2\u7ecf\u6ee1\u8d1f\u8377\uff0c\u6267\u884c\u4efb\u52a1\u7684\u7ebf\u7a0b\u5df2\u7ecf\u8fbe\u5230\u6700\u592716\u4e2a\u7ebf\u7a0b\uff0c\u800c200\u5bb9\u91cf\u7684\u961f\u5217\u4e5f\u5df2\u7ecf\u653e\u4e0d\u4e0b\u65b0\u7684task\u3002<\/p>\n\n\n\n<p>\u67e5\u770b\u7ebf\u7a0b\u6c60\u7684\u60c5\u51b5\u4e5f\u53ef\u4ee5\u770b\u51fa write \u7ebf\u7a0b\u6c60\u6709\u5f88\u591a\u5199\u5165\u7684\u4efb\u52a1<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>GET \/_cat\/thread_pool?v&amp;h=host,name,type,size,active,largest,rejected,completed,queue,queue_size\n\u590d\u5236\u4ee3\u7801<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/p3-juejin.byteimg.com\/tos-cn-i-k3u1fbpfcp\/6a558cdf9e5d45d693b9b5907deba9cb~tplv-k3u1fbpfcp-zoom-in-crop-mark:4536:0:0:0.awebp\" alt=\"write \u7ebf\u7a0b\u6c60\u62d2\u7edd\u4efb\u52a1\u7684\u60c5\u51b5.png\"\/><\/figure>\n\n\n\n<p>\u6240\u4ee5\u6211\u4eec\u9700\u8981\u4f18\u5316 ES \u7684 write \u7684\u6027\u80fd\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4.\u89e3\u51b3\u601d\u8def<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">4.1 \u5206\u6790\u573a\u666f<\/h4>\n\n\n\n<p>ES \u7684\u4f18\u5316\u5206\u4e3a\u5f88\u591a\u65b9\u9762\uff0c\u6211\u4eec\u8981\u6839\u636e\u4f7f\u7528\u573a\u666f\u8003\u8651\u5bf9 ES \u7684\u8981\u6c42\u3002<\/p>\n\n\n\n<p><strong>\u6839\u636e\u4e2a\u4eba\u5b9e\u8df5\u7ecf\u9a8c\uff0c\u5217\u4e3e\u4e09\u79cd\u4e0d\u540c\u573a\u666f\u4e0b\u7684\u7279\u70b9<\/strong>\uff1a<\/p>\n\n\n\n<ul>\n<li><strong>SkyWalking<\/strong>\uff1a\u4e00\u822c\u914d\u5957\u4f7f\u7528ES\u4f5c\u4e3a\u6570\u636e\u5b58\u50a8\uff0c\u5b58\u50a8\u94fe\u8def\u8ffd\u8e2a\u6570\u636e\u3001\u6307\u6807\u6570\u636e\u7b49\u4fe1\u606f\u3002<\/li>\n\n\n\n<li><strong>ELK<\/strong>\uff1a\u4e00\u822c\u7528\u6765\u5b58\u50a8\u7cfb\u7edf\u65e5\u5fd7\uff0c\u5e76\u8fdb\u884c\u5206\u6790\uff0c\u641c\u7d22\uff0c\u5b9a\u4f4d\u5e94\u7528\u7684\u95ee\u9898\u3002<\/li>\n\n\n\n<li><strong>\u5168\u6587\u641c\u7d22\u7684\u4e1a\u52a1<\/strong>\uff1a\u4e1a\u52a1\u4e2d\u5e38\u7528 ES \u4f5c\u4e3a\u5168\u6587\u641c\u7d22\u5f15\u64ce\uff0c\u4f8b\u5982\u5728\u5916\u5356\u5e94\u7528\u4e2d\uff0cES \u7528\u6765\u5b58\u50a8\u5546\u5bb6\u3001\u7f8e\u98df\u7684\u4e1a\u52a1\u6570\u636e\uff0c\u7528\u6237\u5728\u5ba2\u6237\u7aef\u53ef\u4ee5\u6839\u636e\u5173\u952e\u5b57\u3001\u5730\u7406\u4f4d\u7f6e\u7b49\u67e5\u8be2\u6761\u4ef6\u641c\u7d22\u5546\u5bb6\u3001\u7f8e\u98df\u4fe1\u606f\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u8fd9\u4e09\u7c7b\u573a\u666f\u7684\u7279\u70b9\u5982\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th><\/th><th>SkyWalking<\/th><th>ELK<\/th><th>\u5168\u6587\u641c\u7d22\u7684\u4e1a\u52a1<\/th><\/tr><\/thead><tbody><tr><td>\u5e76\u53d1\u5199<\/td><td>\u9ad8\u5e76\u53d1\u5199<\/td><td>\u9ad8\u5e76\u53d1\u5199<\/td><td>\u5e76\u53d1\u4e00\u822c\u4e0d\u9ad8<\/td><\/tr><tr><td>\u5e76\u53d1\u8bfb<\/td><td>\u5e76\u53d1\u4f4e<\/td><td>\u5e76\u53d1\u4f4e<\/td><td>\u5e76\u53d1\u9ad8<\/td><\/tr><tr><td>\u5b9e\u65f6\u6027\u8981\u6c42<\/td><td>2\u5206\u949f\u4ee5\u5185<\/td><td>30\u79d2\u4ee5\u5185<\/td><td>1\u5206\u949f\u5185<\/td><\/tr><tr><td>\u6570\u636e\u5b8c\u6574\u6027<\/td><td>\u53ef\u5bb9\u5fcd\u4e22\u5931\u5c11\u91cf\u6570\u636e<\/td><td>\u53ef\u5bb9\u5fcd\u4e22\u5931\u5c11\u91cf\u6570\u636e<\/td><td>\u6570\u636e\u5c3d\u91cf100%\u4e0d\u4e22\u5931<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>\u5173\u4e8e\u5b9e\u65f6\u6027<\/strong><\/p>\n\n\n\n<ul>\n<li>SkyWalking \u5728\u5b9e\u9645\u4f7f\u7528\u4e2d\uff0c\u4e00\u822c\u4f7f\u7528\u9891\u7387\u4e0d\u592a\u9ad8\uff0c\u5f80\u5f80\u662f\u53d1\u73b0\u5e94\u7528\u7684\u95ee\u9898\u540e\uff0c\u518d\u53bb SkyWalking \u67e5\u5386\u53f2\u94fe\u8def\u8ffd\u8e2a\u6570\u636e\u6216\u6307\u6807\u6570\u636e\uff0c\u6240\u4ee5\u53ef\u4ee5\u63a5\u53d7\u51e0\u5206\u949f\u7684\u5ef6\u8fdf\u3002<\/li>\n\n\n\n<li>ELK \u4e0d\u7ba1\u662f\u5f00\u53d1\u3001\u6d4b\u8bd5\u7b49\u9636\u6bb5\uff0c\u65f6\u5e38\u7528\u6765\u5b9a\u4f4d\u5e94\u7528\u7684\u95ee\u9898\uff0c\u5982\u679c\u4e0d\u80fd\u5feb\u901f\u67e5\u8be2\u51fa\u6570\u636e\uff0c\u5ef6\u8fdf\u592a\u4e45\uff0c\u4f1a\u803d\u8bef\u5f88\u591a\u65f6\u95f4\uff0c\u5927\u5927\u964d\u4f4e\u5de5\u4f5c\u6548\u7387\uff1b\u5982\u679c\u662f\u67e5\u65e5\u5fd7\u5b9a\u4f4d\u751f\u4ea7\u95ee\u9898\uff0c\u90a3\u66f4\u662f\u523b\u4e0d\u5bb9\u7f13\u3002<\/li>\n\n\n\n<li>\u5168\u6587\u641c\u7d22\u7684\u4e1a\u52a1\u4e2d\u4e00\u822c\u53ef\u4ee5\u63a5\u53d7\u57281\u5206\u949f\u5185\u67e5\u770b\u5230\u6700\u65b0\u6570\u636e\uff0c\u6bd4\u5982\u65b0\u5546\u54c1\u4e0a\u67b6\u4e00\u5206\u949f\u540e\u624d\u770b\u5230\uff0c\u4f46\u5c3d\u91cf\u5b9e\u65f6\uff0c\u5728\u51e0\u79d2\u5185\u53ef\u4ee5\u53ef\u770b\u5230\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">4.2 \u4f18\u5316\u7684\u65b9\u5411<\/h4>\n\n\n\n<p>\u53ef\u4ee5\u4ece\u4e09\u65b9\u9762\u8fdb\u884c\u4f18\u5316\uff1aJVM\u6027\u80fd\u8c03\u4f18\u3001ES\u6027\u80fd\u8c03\u4f18\u3001\u63a7\u5236\u6570\u636e\u6765\u6e90<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u4e09\u3001ES\u6027\u80fd\u4f18\u5316<\/h1>\n\n\n\n<p>\u53ef\u4ee5\u4ece\u4e09\u65b9\u9762\u8fdb\u884c\u4f18\u5316\uff1aJVM \u6027\u80fd\u8c03\u4f18\u3001ES \u6027\u80fd\u8c03\u4f18\u3001\u63a7\u5236\u6570\u636e\u6765\u6e90<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1. JVM\u8c03\u4f18<\/h2>\n\n\n\n<p><strong>\u7b2c\u4e00\u6b65\u662f JVM \u8c03\u4f18\u3002<\/strong>&nbsp;\u56e0\u4e3a ES \u662f\u4f9d\u8d56\u4e8e JVM \u8fd0\u884c\uff0c\u6ca1\u6709\u5408\u7406\u7684\u8bbe\u7f6e JVM \u53c2\u6570\uff0c\u5c06\u6d6a\u8d39\u8d44\u6e90\uff0c\u751a\u81f3\u5bfc\u81f4 ES \u5f88\u5bb9\u6613 OOM \u800c\u5d29\u6e83\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1.1 \u76d1\u63a7 JVM \u8fd0\u884c\u60c5\u51b5<\/h3>\n\n\n\n<p><strong>(1) \u67e5\u770b GC \u65e5\u5fd7<\/strong>&nbsp;<img decoding=\"async\" src=\"https:\/\/p3-juejin.byteimg.com\/tos-cn-i-k3u1fbpfcp\/4cdc7d10563f45568508f8e6f62e3674~tplv-k3u1fbpfcp-zoom-in-crop-mark:4536:0:0:0.awebp\" alt=\"GC\u65e5\u5fd7\u4e2d\u5f88\u591aYoung GC.png\">&nbsp;<strong>\u95ee\u9898<\/strong>\uff1aYoung GC \u548c Full GC \u90fd\u5f88\u9891\u7e41\uff0c\u7279\u522b\u662f Young GC \u9891\u7387\u9ad8\uff0c\u7d2f\u79ef\u8017\u65f6\u975e\u5e38\u591a\u3002<\/p>\n\n\n\n<p><strong>(2) \u4f7f\u7528 jstat \u770b\u4e0b\u6bcf\u79d2\u7684 GC \u60c5\u51b5<\/strong>&nbsp;<img decoding=\"async\" src=\"https:\/\/p3-juejin.byteimg.com\/tos-cn-i-k3u1fbpfcp\/ffdde0b20ee7443b963b1e349aeeb2da~tplv-k3u1fbpfcp-zoom-in-crop-mark:4536:0:0:0.awebp\" alt=\"jstat\u53d1\u73b0Young GC\u9891\u7e41.png\">&nbsp;<strong>\u53c2\u6570\u8bf4\u660e<\/strong><\/p>\n\n\n\n<ul>\n<li>S0\uff1a\u5e78\u5b581\u533a\u5f53\u524d\u4f7f\u7528\u6bd4\u4f8b<\/li>\n\n\n\n<li>S1\uff1a\u5e78\u5b582\u533a\u5f53\u524d\u4f7f\u7528\u6bd4\u4f8b<\/li>\n\n\n\n<li>E\uff1a\u4f0a\u7538\u56ed\u533a\u4f7f\u7528\u6bd4\u4f8b<\/li>\n\n\n\n<li>O\uff1a\u8001\u5e74\u4ee3\u4f7f\u7528\u6bd4\u4f8b<\/li>\n\n\n\n<li>M\uff1a\u5143\u6570\u636e\u533a\u4f7f\u7528\u6bd4\u4f8b<\/li>\n\n\n\n<li>CCS\uff1a\u538b\u7f29\u4f7f\u7528\u6bd4\u4f8b<\/li>\n\n\n\n<li>YGC\uff1a\u5e74\u8f7b\u4ee3\u5783\u573e\u56de\u6536\u6b21\u6570<\/li>\n\n\n\n<li>FGC\uff1a\u8001\u5e74\u4ee3\u5783\u573e\u56de\u6536\u6b21\u6570<\/li>\n\n\n\n<li>FGCT\uff1a\u8001\u5e74\u4ee3\u5783\u573e\u56de\u6536\u6d88\u8017\u65f6\u95f4<\/li>\n\n\n\n<li>GCT\uff1a\u5783\u573e\u56de\u6536\u6d88\u8017\u603b\u65f6\u95f4&nbsp;<strong>\u95ee\u9898<\/strong>\uff1a\u4ece jstat gc \u4e2d\u4e5f\u53ef\u4ee5\u770b\u51fa\uff0c\u6bcf\u79d2\u7684 eden \u589e\u957f\u901f\u5ea6\u975e\u5e38\u5feb\uff0c\u5f88\u5feb\u5c31\u6ee1\u4e86\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">1.2 \u5b9a\u4f4d Young GC \u9891\u7e41\u7684\u539f\u56e0<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">1.2.1 \u68c0\u67e5\u662f\u5426\u65b0\u751f\u4ee3\u7684\u7a7a\u95f4\u662f\u5426\u592a\u5c0f<\/h4>\n\n\n\n<p>\u7528\u4e0b\u9762\u51e0\u79cd\u65b9\u5f0f\u90fd\u53ef\u67e5\u770b\u65b0\u3001\u8001\u5e74\u4ee3\u5185\u5b58\u5927\u5c0f (1) \u4f7f\u7528&nbsp;<strong>jstat -gc pid<\/strong>&nbsp;\u67e5\u770b Eden \u533a\u3001\u8001\u5e74\u4ee3\u7a7a\u95f4\u5927\u5c0f (2) \u4f7f\u7528&nbsp;<strong>jmap -heap pid<\/strong>&nbsp;\u67e5\u770b Eden \u533a\u3001\u8001\u5e74\u4ee3\u7a7a\u95f4\u5927\u5c0f (3) \u67e5\u770b GC \u65e5\u5fd7\u4e2d\u7684 GC \u660e\u7ec6&nbsp;<img decoding=\"async\" src=\"https:\/\/p3-juejin.byteimg.com\/tos-cn-i-k3u1fbpfcp\/8961ab2a7b35462da9d261206c74cb29~tplv-k3u1fbpfcp-zoom-in-crop-mark:4536:0:0:0.awebp\" alt=\"GC\u660e\u7ec6.png\">&nbsp;\u5176\u4e2d 996800K \u4e3a\u65b0\u751f\u4ee3\u53ef\u7528\u7a7a\u95f4\u5927\u5c0f\uff0c\u5373 Eden \u533a+1\u4e2a Survivor \u533a\u7684\u7a7a\u95f4\u5927\u5c0f\uff0c\u6240\u4ee5\u65b0\u751f\u4ee3\u603b\u5185\u5b58\u662f996800K\/0.9\uff0c \u7ea61081M<\/p>\n\n\n\n<p>\u4e0a\u9762\u7684\u51e0\u79cd\u65b9\u5f0f\u90fd\u67e5\u8be2\u51fa\uff0c\u65b0\u751f\u4ee3\u603b\u5185\u5b58\u7ea61081M\uff0c\u53731G\u5de6\u53f3\uff1b\u8001\u5e74\u4ee3\u603b\u5185\u5b58\u4e3a19864000K\uff0c\u7ea619G\u3002\u65b0\u3001\u8001\u6bd4\u4f8b\u7ea61:19\uff0c\u51fa\u4e4e\u610f\u6599\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1.2.1 \u65b0\u8001\u5e74\u4ee3\u7a7a\u95f4\u6bd4\u4f8b\u4e3a\u4ec0\u4e48\u4e0d\u662f JDK \u9ed8\u8ba4\u76841:2\u3010\u91cd\u70b9\uff01\u3011<\/h4>\n\n\n\n<p><strong>\u8fd9\u771f\u662f\u4e00\u4e2a\u5bb9\u6613\u8e29\u5751\u7684\u5730\u65b9\u3002<\/strong>&nbsp;\u5982\u679c\u6ca1\u6709\u663e\u793a\u8bbe\u7f6e\u65b0\u751f\u4ee3\u5927\u5c0f\uff0cJVM \u5728\u4f7f\u7528 CMS \u6536\u96c6\u5668\u65f6\u4f1a\u81ea\u52a8\u8c03\u53c2\uff0c\u65b0\u751f\u4ee3\u7684\u5927\u5c0f\u5728\u6ca1\u6709\u8bbe\u7f6e\u7684\u60c5\u51b5\u4e0b\u662f\u901a\u8fc7\u8ba1\u7b97\u5f97\u51fa\u7684\uff0c\u5176\u5927\u5c0f\u53ef\u80fd\u4e0e NewRatio \u7684\u9ed8\u8ba4\u914d\u7f6e\u6ca1\u4ec0\u4e48\u5173\u7cfb\u800c\u4e0e ParallelGCThreads \u7684\u914d\u7f6e\u6709\u4e00\u5b9a\u7684\u5173\u7cfb\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\">\n<p>\u53c2\u8003\uff1a<a href=\"https:\/\/link.juejin.cn\/?target=https%3A%2F%2Fwww.jianshu.com%2Fp%2F832fc4d4cb53\" target=\"_blank\" rel=\"noreferrer noopener\">CMS GC \u9ed8\u8ba4\u65b0\u751f\u4ee3\u662f\u591a\u5927\uff1f<\/a><\/p>\n<\/blockquote>\n\n\n\n<p>\u6240\u4ee5\uff1a<strong>\u65b0\u751f\u4ee3\u5927\u5c0f\u6709\u4e0d\u786e\u5b9a\u6027\uff0c\u6700\u597d\u914d\u7f6e JVM \u53c2\u6570 -XX:NewSize\u3001-XX:MaxNewSize \u6216\u8005 -xmn \uff0c\u514d\u5f97\u9047\u5230\u4e00\u4e9b\u5947\u602a\u7684 GC\uff0c\u8ba9\u4eba\u63aa\u624b\u4e0d\u53ca\u3002<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1.3 \u4e0a\u9762\u73b0\u8c61\u9020\u6210\u7684\u5f71\u54cd<\/h3>\n\n\n\n<p><strong>\u65b0\u751f\u4ee3\u8fc7\u5c0f\uff0c\u8001\u5e74\u4ee3\u8fc7\u5927\u7684\u5f71\u54cd<\/strong><\/p>\n\n\n\n<ul>\n<li><strong>\u65b0\u751f\u4ee3\u8fc7\u5c0f<\/strong>: (1) \u4f1a\u5bfc\u81f4\u65b0\u751f\u4ee3 Eden \u533a\u5f88\u5feb\u7528\u5b8c\uff0c\u800c\u89e6\u53d1 Young GC\uff0cYoung GC \u7684\u8fc7\u7a0b\u4e2d\u4f1a STW(Stop The World)\uff0c\u4e5f\u5c31\u662f\u6240\u6709\u5de5\u4f5c\u7ebf\u7a0b\u505c\u6b62\uff0c\u53ea\u6709 GC \u7684\u7ebf\u7a0b\u5728\u8fdb\u884c\u5783\u573e\u56de\u6536\uff0c\u8fd9\u4f1a\u5bfc\u81f4 ES \u77ed\u65f6\u95f4\u505c\u987f\u3002\u9891\u7e41\u7684 Young GC\uff0c\u79ef\u5c11\u6210\u591a\uff0c\u5bf9\u7cfb\u7edf\u6027\u80fd\u5f71\u54cd\u8f83\u5927\u3002 (2) \u5927\u90e8\u5206\u5bf9\u8c61\u5f88\u5feb\u8fdb\u5165\u8001\u5e74\u4ee3\uff0c\u8001\u5e74\u4ee3\u5f88\u5bb9\u6613\u7528\u5b8c\u800c\u89e6\u53d1 Full GC\u3002<\/li>\n\n\n\n<li><strong>\u8001\u5e74\u4ee3\u8fc7\u5927<\/strong>\uff1a\u4f1a\u5bfc\u81f4 Full GC \u7684\u6267\u884c\u65f6\u95f4\u8fc7\u957f\uff0cFull GC \u867d\u7136\u6709\u5e76\u884c\u5904\u7406\u7684\u6b65\u9aa4\uff0c\u4f46\u662f\u8fd8\u662f\u6bd4 Young GC \u7684 STW \u65f6\u95f4\u66f4\u4e45\uff0c\u800c GC \u5bfc\u81f4\u7684\u505c\u987f\u65f6\u95f4\u5728\u51e0\u5341\u6beb\u79d2\u5230\u51e0\u79d2\u5185\uff0c\u5f88\u5f71\u54cd ES \u7684\u6027\u80fd\uff0c\u540c\u65f6\u4e5f\u4f1a\u5bfc\u81f4\u8bf7\u6c42 ES \u670d\u52a1\u7aef\u7684\u5ba2\u6237\u7aef\u5728\u4e00\u5b9a\u65f6\u95f4\u5185\u6ca1\u6709\u54cd\u5e94\u800c\u53d1\u751f timeout \u5f02\u5e38\uff0c\u5bfc\u81f4\u8bf7\u6c42\u5931\u8d25\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">1.4 JVM\u4f18\u5316<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">1.4.1 \u914d\u7f6e\u5806\u5185\u5b58\u7a7a\u95f4\u5927\u5c0f<\/h4>\n\n\n\n<p>32G \u7684\u5185\u5b58\uff0c\u5206\u914d 20G \u7ed9\u5806\u5185\u5b58\u662f\u4e0d\u59a5\u5f53\u7684\uff0c\u6240\u4ee5\u8c03\u6574\u4e3a\u603b\u5185\u5b58\u768450%\uff0c\u537316G\u3002 \u4fee\u6539 elasticsearch \u7684 jvm.options \u6587\u4ef6<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>-Xms16g\n-Xmx16g\n\u590d\u5236\u4ee3\u7801<\/code><\/pre>\n\n\n\n<p><strong>\u8bbe\u7f6e\u8981\u6c42:<\/strong><\/p>\n\n\n\n<ul>\n<li>Xms \u4e0e Xmx \u5927\u5c0f\u76f8\u540c\u3002\u5728 jvm \u7684\u53c2\u6570\u4e2d -Xms \u548c -Xmx \u8bbe\u7f6e\u7684\u4e0d\u4e00\u81f4\uff0c\u5728\u521d\u59cb\u5316\u65f6\u53ea\u4f1a\u521d\u59cb -Xms \u5927\u5c0f\u7684\u7a7a\u95f4\u5b58\u50a8\u4fe1\u606f\uff0c\u6bcf\u5f53\u7a7a\u95f4\u4e0d\u591f\u7528\u65f6\u518d\u5411\u64cd\u4f5c\u7cfb\u7edf\u7533\u8bf7\uff0c\u8fd9\u6837\u7684\u8bdd\u5fc5\u7136\u8981\u8fdb\u884c\u4e00\u6b21 GC\uff0cGC\u4f1a\u5e26\u6765 STW\u3002\u800c\u5269\u4f59\u7a7a\u95f4\u5f88\u591a\u65f6\uff0c\u4f1a\u89e6\u53d1\u7f29\u5bb9\u3002\u518d\u6b21\u4e0d\u591f\u7528\u65f6\u518d\u6269\u5bb9\uff0c\u5982\u6b64\u53cd\u590d\uff0c\u8fd9\u4e9b\u8fc7\u7a0b\u4f1a\u5f71\u54cd\u7cfb\u7edf\u6027\u80fd\u3002\u540c\u7406\u5728 MetaSpace \u533a\u4e5f\u6709\u7c7b\u4f3c\u7684\u95ee\u9898\u3002<\/li>\n\n\n\n<li>jvm \u5efa\u8bae\u4e0d\u8981\u8d85\u8fc7 32G\uff0c\u5426\u5219 jvm \u4f1a\u7981\u7528\u5185\u5b58\u5bf9\u8c61\u6307\u9488\u538b\u7f29\u6280\u672f\uff0c\u9020\u6210\u5185\u5b58\u6d6a\u8d39<\/li>\n\n\n\n<li>Xmx \u548c Xms \u4e0d\u8981\u8d85\u8fc7\u7269\u7406 RAM \u768450%\u3002 \u53c2\u8003\uff1a<a href=\"https:\/\/link.juejin.cn\/?target=https%3A%2F%2Fwww.elastic.co%2Fguide%2Fen%2Felasticsearch%2Freference%2Fcurrent%2Fimportant-settings.html%23heap-size-settings\" target=\"_blank\" rel=\"noreferrer noopener\">\u5b98\u65b9\u5806\u5185\u5b58\u8bbe\u7f6e\u7684\u5efa\u8bae<\/a>Xmx \u548c Xms \u4e0d\u8981\u8d85\u8fc7\u7269\u7406\u5185\u5b58\u768450%\u3002Elasticsearch \u9700\u8981\u5185\u5b58\u7528\u4e8eJVM\u5806\u4ee5\u5916\u7684\u5176\u4ed6\u7528\u9014\uff0c\u4e3a\u6b64\u7559\u51fa\u7a7a\u95f4\u975e\u5e38\u91cd\u8981\u3002\u4f8b\u5982\uff0cElasticsearch \u4f7f\u7528\u5806\u5916\u7f13\u51b2\u533a\u8fdb\u884c\u6709\u6548\u7684\u7f51\u7edc\u901a\u4fe1\uff0c\u4f9d\u9760\u64cd\u4f5c\u7cfb\u7edf\u7684\u6587\u4ef6\u7cfb\u7edf\u7f13\u5b58\u6765\u9ad8\u6548\u5730\u8bbf\u95ee\u6587\u4ef6\uff0c\u800c JVM \u672c\u8eab\u4e5f\u9700\u8981\u4e00\u4e9b\u5185\u5b58\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">1.4.2 \u914d\u7f6e\u5806\u5185\u5b58\u65b0\u751f\u4ee3\u7a7a\u95f4\u5927\u5c0f<\/h4>\n\n\n\n<p>\u56e0\u4e3a\u6307\u5b9a\u65b0\u751f\u4ee3\u7a7a\u95f4\u5927\u5c0f\uff0c\u5bfc\u81f4 JVM \u81ea\u52a8\u8c03\u53c2\u53ea\u5206\u914d\u4e86 1G \u5185\u5b58\u7ed9\u65b0\u751f\u4ee3\u3002<\/p>\n\n\n\n<p>\u4fee\u6539 elasticsearch \u7684 jvm.options \u6587\u4ef6\uff0c\u52a0\u4e0a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>-XX:NewSize=8G\n-XX:MaxNewSize=8G\n\u590d\u5236\u4ee3\u7801<\/code><\/pre>\n\n\n\n<p>\u8001\u5e74\u4ee3\u5219\u81ea\u52a8\u5206\u914d 16G-8G=8G \u5185\u5b58\uff0c\u65b0\u751f\u4ee3\u8001\u5e74\u4ee3\u7684\u6bd4\u4f8b\u4e3a 1:1\u3002\u4fee\u6539\u540e\u6bcf\u6b21 Young GC \u9891\u7387\u66f4\u4f4e\uff0c\u4e14\u6bcf\u6b21 GC \u540e\u53ea\u6709\u5c11\u6570\u6570\u636e\u4f1a\u8fdb\u5165\u8001\u5e74\u4ee3\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2.3 \u4f7f\u7528G1\u5783\u573e\u56de\u6536\u5668(\u672a\u5b9e\u8df5)<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote\">\n<p>G1\u5783\u573e\u56de\u6536\u5668\u8ba9\u7cfb\u7edf\u4f7f\u7528\u8005\u6765\u8bbe\u5b9a\u5783\u573e\u56de\u6536\u5806\u7cfb\u7edf\u7684\u5f71\u54cd\uff0c\u7136\u540e\u628a\u5185\u5b58\u62c6\u5206\u4e3a\u5927\u91cf\u7684\u5c0f Region\uff0c\u8ffd\u8e2a\u6bcf\u4e2a Region \u4e2d\u53ef\u4ee5\u56de\u6536\u7684\u5bf9\u8c61\u5927\u5c0f\u548c\u56de\u6536\u5b8c\u6210\u7684\u9884\u8ba1\u82b1\u8d39\u7684\u65f6\u95f4\uff0c \u6700\u540e\u5728\u5783\u573e\u56de\u6536\u7684\u65f6\u5019\uff0c\u5c3d\u91cf\u628a\u5783\u573e\u56de\u6536\u5bf9\u7cfb\u7edf\u9020\u6210\u7684\u5f71\u54cd\u63a7\u5236\u5728\u6211\u4eec\u6307\u5b9a\u7684\u65f6\u95f4\u8303\u56f4\u5185\uff0c\u540c\u65f6\u5728\u6709\u9650\u7684\u65f6\u95f4\u5185\u5c3d\u91cf\u56de\u6536\u66f4\u591a\u7684\u5783\u573e\u5bf9\u8c61\u3002 G1\u5783\u573e\u56de\u6536\u5668\u4e00\u822c\u5728\u5927\u6570\u91cf\u3001\u5927\u5185\u5b58\u7684\u60c5\u51b5\u4e0b\u6709\u66f4\u597d\u7684\u6027\u80fd\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>ES\u9ed8\u8ba4\u4f7f\u7528\u7684\u5783\u573e\u56de\u6536\u5668\u662f\uff1a\u8001\u5e74\u4ee3\uff08CMS\uff09+ \u65b0\u751f\u4ee3\uff08ParNew\uff09\u3002\u5982\u679c\u662fJDK1.9\uff0cES \u9ed8\u8ba4\u4f7f\u7528G1\u5783\u573e\u56de\u6536\u5668\u3002<\/p>\n\n\n\n<p>\u56e0\u4e3a\u4f7f\u7528\u7684\u662f JDK1.8\uff0c\u6240\u4ee5\u5e76\u672a\u5207\u6362\u5783\u573e\u56de\u6536\u5668\u3002\u540e\u7eed\u5982\u679c\u518d\u6709\u6027\u80fd\u95ee\u9898\u518d\u5207\u6362G1\u5783\u573e\u56de\u6536\u5668\uff0c\u6d4b\u8bd5\u662f\u5426\u6709\u66f4\u597d\u7684\u6027\u80fd\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1.5 \u4f18\u5316\u7684\u6548\u679c<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">1.5.1 \u65b0\u751f\u4ee3\u4f7f\u7528\u5185\u5b58\u7684\u589e\u957f\u7387\u66f4\u4f4e<\/h4>\n\n\n\n<p><strong>\u4f18\u5316\u524d<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/p3-juejin.byteimg.com\/tos-cn-i-k3u1fbpfcp\/9b7ade9762c14b129c20487ebfb7c246~tplv-k3u1fbpfcp-zoom-in-crop-mark:4536:0:0:0.awebp\" alt=\"\u4f18\u5316\u524d.png\"\/><\/figure>\n\n\n\n<p>\u6bcf\u79d2\u6253\u5370\u4e00\u6b21 GC \u6570\u636e\u3002\u53ef\u4ee5\u770b\u51fa\uff0c\u5e74\u8f7b\u4ee3\u589e\u957f\u901f\u5ea6\u5f88\u5feb\uff0c\u51e0\u79d2\u949f\u5e74\u8f7b\u4ee3\u5c31\u6ee1\u4e86\uff0c\u5bfc\u81f4 Young GC \u89e6\u53d1\u5f88\u9891\u7e41\uff0c\u51e0\u79d2\u949f\u5c31\u4f1a\u89e6\u53d1\u4e00\u6b21\u3002\u800c\u6bcf\u6b21 Young GC \u5f88\u5927\u53ef\u80fd\u6709\u5b58\u6d3b\u5bf9\u8c61\u8fdb\u5165\u8001\u5e74\u4ee3\uff0c\u800c\u4e14\uff0c\u5b58\u6d3b\u5bf9\u8c61\u591a\u7684\u65f6\u5019(\u770b\u4e0a\u56fe\u4e2d\u7b2c\u4e00\u4e2a\u7ea2\u6846\u4e2d\u7684old gc\u6570\u636e)\uff0c\u6709(51.44-51.08)\/100 * 19000M = \u7ea668M\u3002\u6bcf\u6b21\u8fdb\u5165\u8001\u5e74\u4ee3\u7684\u5bf9\u8c61\u8f83\u591a\uff0c\u52a0\u4e0a\u9891\u7e41\u7684 Young GC\uff0c\u4f1a\u5bfc\u81f4\u65b0\u8001\u5e74\u4ee3\u7684\u5206\u4ee3\u6a21\u5f0f\u5931\u53bb\u4e86\u4f5c\u7528\uff0c\u76f8\u5f53\u4e8e\u8001\u5e74\u4ee3\u53d6\u4ee3\u4e86\u65b0\u751f\u4ee3\u6765\u5b58\u653e\u8fd1\u671f\u5185\u751f\u6210\u7684\u5bf9\u8c61\u3002\u5f53\u8001\u5e74\u4ee3\u6ee1\u4e86\uff0c\u89e6\u53d1 Full GC\uff0c\u5b58\u6d3b\u7684\u5bf9\u8c61\u4e5f\u4f1a\u5f88\u591a\uff0c\u56e0\u4e3a\u8fd9\u4e9b\u5bf9\u8c61\u5f88\u53ef\u80fd\u8fd8\u662f\u8fd1\u671f\u52a0\u5165\u7684\uff0c\u8fd8\u5b58\u6d3b\u7740\uff0c\u6240\u4ee5\u4e00\u6b21 Full GC \u56de\u6536\u5bf9\u8c61\u4e0d\u591a\u3002\u800c\u8fd9\u4f1a\u6076\u6027\u5faa\u73af\uff0c\u8001\u5e74\u4ee3\u5f88\u5feb\u53c8\u6ee1\u4e86\uff0c\u53c8 Full GC\uff0c\u53c8\u6b8b\u7559\u4e00\u5927\u90e8\u5206\u5b58\u6d3b\u7684\uff0c\u53c8\u5f88\u5bb9\u6613\u6ee1\u4e86\uff0c\u6240\u4ee5\u5bfc\u81f4\u4e00\u76f4\u9891\u7e41 Full GC\u3002<\/p>\n\n\n\n<p><strong>\u4f18\u5316\u540e<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/p3-juejin.byteimg.com\/tos-cn-i-k3u1fbpfcp\/2f6f0ddce5e54fd2917ab7dab29cd30e~tplv-k3u1fbpfcp-zoom-in-crop-mark:4536:0:0:0.awebp\" alt=\"\u4f18\u5316\u540e.png\"\/><\/figure>\n\n\n\n<p>\u6bcf\u79d2\u6253\u5370\u4e00\u6b21 GC \u6570\u636e\u3002\u53ef\u4ee5\u770b\u51fa\uff0c\u65b0\u751f\u4ee3\u589e\u957f\u901f\u5ea6\u6162\u4e86\u8bb8\u591a\uff0c\u81f3\u5c11\u898160\u79d2\u624d\u4f1a\u6ee1\uff0c\u5982\u4e0a\u56fe\u7ea2\u6846\u4e2d\u6570\u636e\uff0c\u8fdb\u5165\u8001\u5e74\u4ee3\u7684\u5bf9\u8c61\u7ea6(15.68-15.60)\/100 * 10000 = 8M\uff0c\u975e\u5e38\u7684\u5c11\u3002\u6240\u4ee5\u8981\u5f88\u4e45\u624d\u4f1a\u89e6\u53d1\u4e00\u6b21 Full GC \u3002\u800c\u4e14\u7b49\u5230 Full GC \u65f6\uff0c\u8001\u5e74\u4ee3\u91cc\u5f88\u591a\u5bf9\u8c61\u90fd\u662f\u5b58\u6d3b\u4e86\u5f88\u4e45\u7684\uff0c\u4e00\u822c\u90fd\u662f\u4e0d\u4f1a\u88ab\u5f15\u7528\uff0c\u6240\u4ee5\u5f88\u5927\u4e00\u90e8\u5206\u4f1a\u88ab\u56de\u6536\u6389\uff0c\u7559\u4e00\u4e2a\u6bd4\u8f83\u5e72\u51c0\u7684\u8001\u5e74\u4ee3\u7a7a\u95f4\uff0c\u53ef\u4ee5\u7ee7\u7eed\u653e\u5f88\u591a\u5bf9\u8c61\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1.5.2 \u65b0\u751f\u4ee3\u548c\u8001\u5e74\u4ee3 GC \u9891\u7387\u66f4\u4f4e<\/h4>\n\n\n\n<p>ES \u542f\u52a8\u540e\uff0c\u8fd0\u884c14\u4e2a\u5c0f\u65f6<\/p>\n\n\n\n<p><strong>\u4f18\u5316\u524d<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/p3-juejin.byteimg.com\/tos-cn-i-k3u1fbpfcp\/1001c7cdc0364cca8fe48cde4a5fa54e~tplv-k3u1fbpfcp-zoom-in-crop-mark:4536:0:0:0.awebp\" alt=\"\u4f18\u5316\u524d.png\"\/><\/figure>\n\n\n\n<p>Young GC \u6bcf\u6b21\u7684\u65f6\u95f4\u662f\u4e0d\u957f\u7684\uff0c\u4ece\u4e0a\u9762\u76d1\u63a7\u6570\u636e\u4e2d\u53ef\u4ee5\u770b\u51fa\u6bcf\u6b21GC\u65f6\u957f 1467.995\/27276 \u7ea6\u7b49\u4e8e 0.05\u79d2\u3002\u90a3\u4e00\u79d2\u949f\u6709\u591a\u5c11\u65f6\u95f4\u5b9e\u5728\u5904\u7406Young GC ? \u8ba1\u7b97\u516c\u5f0f\uff1a1467\u79d2\/<em>(60\u79d2\u00d760\u5206<\/em>14\u5c0f\u65f6\uff09= \u7ea60.028\u79d2\uff0c\u4e5f\u5c31\u662f100\u79d2\u4e2d\u5c31\u67092.8\u79d2\u5728Young GC\uff0c\u4e5f\u5c31\u662f\u67092.8S\u7684\u505c\u987f\uff0c\u8fd9\u5bf9\u6027\u80fd\u8fd8\u662f\u6709\u5f88\u5927\u6d88\u8017\u7684\u3002\u540c\u65f6\u4e5f\u53ef\u4ee5\u7b97\u51fa\u591a\u4e45\u4e00\u6b21Young GC\uff0c \u65b9\u7a0b\u662f\uff1a 60\u79d2\u00d760\u5206*14\u5c0f\u65f6\/ 27276\u6b21 = 1\u6b21\/X\u79d2\uff0c\u8ba1\u7b97\u5f97\u51faX = 0.54\uff0c\u4e5f\u5c31\u662f0.54\u79d2\u5c31\u4f1a\u6709\u4e00\u6b21Young GC\uff0c\u53ef\u89c1 Young GC \u9891\u7387\u975e\u5e38\u9891\u7e41\u3002<\/p>\n\n\n\n<p><strong>\u4f18\u5316\u540e<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/p3-juejin.byteimg.com\/tos-cn-i-k3u1fbpfcp\/cb5fb53dfe6c43f8964eae5455a88a62~tplv-k3u1fbpfcp-zoom-in-crop-mark:4536:0:0:0.awebp\" alt=\"\u4f18\u5316\u540e\u6548\u679c.png\"\/><\/figure>\n\n\n\n<p>Young GC \u6b21\u6570\u53ea\u6709\u4fee\u6539\u524d\u7684\u5341\u5206\u4e4b\u4e00\uff0cYoung GC \u65f6\u95f4\u4e5f\u662f\u7ea6\u516b\u5206\u4e4b\u4e00\u3002Full GC \u7684\u6b21\u6570\u4e5f\u662f\u53ea\u6709\u539f\u6765\u7684\u516b\u5206\u4e4b\u4e00\uff0cGC \u65f6\u95f4\u5927\u7ea6\u662f\u56db\u5206\u4e4b\u4e00\u3002<\/p>\n\n\n\n<p>GC \u5bf9\u7cfb\u7edf\u7684\u5f71\u54cd\u5927\u5927\u964d\u4f4e\uff0c\u6027\u80fd\u5df2\u7ecf\u5f97\u5230\u5f88\u5927\u7684\u63d0\u5347\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2.ES\u8c03\u4f18<\/h2>\n\n\n\n<p>\u4e0a\u9762\u5df2\u7ecf\u5206\u6790\u8fc7ES\u4f5c\u4e3a\u65e5\u5fd7\u5b58\u50a8\u65f6\u7684\u7279\u6027\u662f\uff1a\u9ad8\u5e76\u53d1\u5199\u3001\u8bfb\u5c11\u3001\u63a5\u53d730\u79d2\u5185\u7684\u5ef6\u65f6\u3001\u53ef\u5bb9\u5fcd\u90e8\u5206\u65e5\u5fd7\u6570\u636e\u4e22\u5931\u3002 \u4e0b\u9762\u6211\u4eec\u9488\u5bf9\u8fd9\u4e9b\u7279\u6027\u5bf9ES\u8fdb\u884c\u8c03\u4f18\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.1 \u4f18\u5316 ES \u7d22\u5f15\u8bbe\u7f6e<\/h3>\n\n\n\n<h5 class=\"wp-block-heading\">2.2.1 ES \u5199\u6570\u636e\u5e95\u5c42\u539f\u7406<\/h5>\n\n\n\n<p><strong>\u672c\u4eba\u6574\u7406\u4e86\u4e00\u4e0b\u6570\u636e\u5199\u5165\u7684\u5e95\u5c42\u539f\u7406<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/p3-juejin.byteimg.com\/tos-cn-i-k3u1fbpfcp\/f4531e09c1f94691a2c279f95e89b125~tplv-k3u1fbpfcp-zoom-in-crop-mark:4536:0:0:0.awebp\" alt=\"ES\u5199\u5165\u6570\u636e\u7684\u539f\u7406.png\"\/><\/figure>\n\n\n\n<p><strong>refresh<\/strong>&nbsp;ES \u63a5\u6536\u6570\u636e\u8bf7\u6c42\u65f6\u5148\u5b58\u5165 ES \u7684\u5185\u5b58\u4e2d\uff0c\u9ed8\u8ba4\u6bcf\u9694\u4e00\u79d2\u4f1a\u4ece\u5185\u5b58 buffer \u4e2d\u5c06\u6570\u636e\u5199\u5165\u64cd\u4f5c\u7cfb\u7edf\u7f13\u5b58 os cache\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u53eb\u505a refresh\uff1b<\/p>\n\n\n\n<p>\u5230\u4e86 os cache \u6570\u636e\u5c31\u80fd\u88ab\u641c\u7d22\u5230\uff08\u6240\u4ee5\u6211\u4eec\u624d\u8bf4 ES \u662f\u8fd1\u5b9e\u65f6\u7684\uff0c\u56e0\u4e3a1s \u7684\u5ef6\u8fdf\u540e\u6267\u884c refresh \u4fbf\u53ef\u8ba9\u6570\u636e\u88ab\u641c\u7d22\u5230\uff09<\/p>\n\n\n\n<p><strong>fsync<\/strong>&nbsp;translog \u4f1a\u6bcf\u96945\u79d2\u6216\u8005\u5728\u4e00\u4e2a\u53d8\u66f4\u8bf7\u6c42\u5b8c\u6210\u4e4b\u540e\u6267\u884c\u4e00\u6b21 fsync \u64cd\u4f5c\uff0c\u5c06 translog \u4ece\u7f13\u5b58\u5237\u5165\u78c1\u76d8\uff0c\u8fd9\u4e2a\u64cd\u4f5c\u6bd4\u8f83\u8017\u65f6\uff0c\u5982\u679c\u5bf9\u6570\u636e\u4e00\u81f4\u6027\u8981\u6c42\u4e0d\u662f\u8ddf\u9ad8\u65f6\u5efa\u8bae\u5c06\u7d22\u5f15\u6539\u4e3a\u5f02\u6b65\uff0c\u5982\u679c\u8282\u70b9\u5b95\u673a\u65f6\u4f1a\u67095\u79d2\u6570\u636e\u4e22\u5931;<\/p>\n\n\n\n<p><strong>flush<\/strong>&nbsp;ES \u9ed8\u8ba4\u6bcf\u969430\u5206\u949f\u4f1a\u5c06 os cache \u4e2d\u7684\u6570\u636e\u5237\u5165\u78c1\u76d8\u540c\u65f6\u6e05\u7a7a translog \u65e5\u5fd7\u6587\u4ef6\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u53eb\u505a flush\u3002<\/p>\n\n\n\n<p><strong>merge<\/strong><\/p>\n\n\n\n<p>ES \u7684\u4e00\u4e2a index \u7531\u591a\u4e2a shard \u7ec4\u6210\uff0c\u800c\u4e00\u4e2a shard \u5176\u5b9e\u5c31\u662f\u4e00\u4e2a Lucene \u7684 index \uff0c\u5b83\u53c8\u7531\u591a\u4e2a segment \u7ec4\u6210\uff0c\u4e14 Lucene \u4f1a\u4e0d\u65ad\u5730\u628a\u4e00\u4e9b\u5c0f\u7684 segment \u5408\u5e76\u6210\u4e00\u4e2a\u5927\u7684 segment \uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u88ab\u79f0\u4e3a<a href=\"https:\/\/link.juejin.cn\/?target=https%3A%2F%2Fwww.elastic.co%2Fguide%2Fen%2Felasticsearch%2Freference%2F6.3%2Findex-modules-merge.html\" target=\"_blank\" rel=\"noreferrer noopener\">\u6bb5merge<\/a>\u3002\u6267\u884c\u7d22\u5f15\u64cd\u4f5c\u65f6\uff0c<a href=\"https:\/\/link.juejin.cn\/?target=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F15426441%2Funderstanding-segments-in-elasticsearch\" target=\"_blank\" rel=\"noreferrer noopener\">ES\u4f1a\u5148\u751f\u6210\u5c0f\u7684segment<\/a>\uff0cES \u6709\u79bb\u7ebf\u7684\u903b\u8f91\u5bf9\u5c0f\u7684 segment \u8fdb\u884c\u5408\u5e76\uff0c\u4f18\u5316\u67e5\u8be2\u6027\u80fd\u3002\u4f46\u662f\u5408\u5e76\u8fc7\u7a0b\u4e2d\u4f1a\u6d88\u8017\u8f83\u591a\u78c1\u76d8 IO\uff0c\u4f1a\u5f71\u54cd\u67e5\u8be2\u6027\u80fd\u3002<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">2.2.2 \u4f18\u5316\u65b9\u5411<\/h5>\n\n\n\n<h6 class=\"wp-block-heading\">2.2.2.1 \u4f18\u5316 fsync<\/h6>\n\n\n\n<p>\u4e3a\u4e86\u4fdd\u8bc1\u4e0d\u4e22\u5931\u6570\u636e\uff0c\u5c31\u8981\u4fdd\u62a4 translog \u6587\u4ef6\u7684\u5b89\u5168:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\">\n<p>Elasticsearch 2.0 \u4e4b\u540e, \u6bcf\u6b21\u5199\u8bf7\u6c42(\u5982 index \u3001delete\u3001update\u3001bulk \u7b49)\u5b8c\u6210\u65f6, \u90fd\u4f1a\u89e6\u53d1<code>fsync<\/code>\u5c06 translog \u4e2d\u7684 segment \u5237\u5230\u78c1\u76d8, \u7136\u540e\u624d\u4f1a\u8fd4\u56de<code>200 OK<\/code>\u7684\u54cd\u5e94;<\/p>\n\n\n\n<p>\u6216\u8005: \u9ed8\u8ba4\u6bcf\u96945s\u5c31\u5c06 translog \u4e2d\u7684\u6570\u636e\u901a\u8fc7<code>fsync<\/code>\u5f3a\u5236\u5237\u65b0\u5230\u78c1\u76d8.<\/p>\n<\/blockquote>\n\n\n\n<p>\u8be5\u65b9\u5f0f\u63d0\u9ad8\u6570\u636e\u5b89\u5168\u6027\u7684\u540c\u65f6\uff0c \u964d\u4f4e\u4e86\u4e00\u70b9\u6027\u80fd.<\/p>\n\n\n\n<p>==&gt; \u9891\u7e41\u5730\u6267\u884c<code>fsync<\/code>\u64cd\u4f5c, \u53ef\u80fd\u4f1a\u4ea7\u751f\u963b\u585e\u5bfc\u81f4\u90e8\u5206\u64cd\u4f5c\u8017\u65f6\u8f83\u4e45.&nbsp;<strong>\u5982\u679c\u5141\u8bb8\u90e8\u5206\u6570\u636e\u4e22\u5931, \u53ef\u8bbe\u7f6e\u5f02\u6b65\u5237\u65b0 translog \u6765\u63d0\u9ad8\u6548\u7387\uff0c\u8fd8\u6709\u964d\u4f4e flush \u7684\u9600\u503c\uff0c\u4f18\u5316\u5982\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\"index.translog.durability\": \"async\",\n\"index.translog.flush_threshold_size\":\"1024mb\",\n\"index.translog.sync_interval\": \"120s\"\n\u590d\u5236\u4ee3\u7801<\/code><\/pre>\n\n\n\n<h6 class=\"wp-block-heading\">2.2.2.2 \u4f18\u5316 refresh<\/h6>\n\n\n\n<p>\u5199\u5165 Lucene \u7684\u6570\u636e\uff0c\u5e76\u4e0d\u662f\u5b9e\u65f6\u53ef\u641c\u7d22\u7684\uff0cES \u5fc5\u987b\u901a\u8fc7 refresh \u7684\u8fc7\u7a0b\u628a\u5185\u5b58\u4e2d\u7684\u6570\u636e\u8f6c\u6362\u6210 Lucene \u7684\u5b8c\u6574 segment \u540e\uff0c\u624d\u53ef\u4ee5\u88ab\u641c\u7d22\u3002<\/p>\n\n\n\n<p>\u9ed8\u8ba41\u79d2\u540e\uff0c\u5199\u5165\u7684\u6570\u636e\u53ef\u4ee5\u5f88\u5feb\u88ab\u67e5\u8be2\u5230\uff0c\u4f46\u52bf\u5fc5\u4f1a\u4ea7\u751f\u5927\u91cf\u7684 segment\uff0c\u68c0\u7d22\u6027\u80fd\u4f1a\u53d7\u5230\u5f71\u54cd\u3002\u6240\u4ee5\uff0c\u52a0\u5927\u65f6\u957f\u53ef\u4ee5\u964d\u4f4e\u7cfb\u7edf\u5f00\u9500\u3002\u5bf9\u4e8e\u65e5\u5fd7\u641c\u7d22\u6765\u8bf4\uff0c\u5b9e\u65f6\u6027\u8981\u6c42\u4e0d\u662f\u90a3\u4e48\u9ad8\uff0c\u8bbe\u7f6e\u4e3a5\u79d2\u6216\u800510s\uff1b\u5bf9\u4e8eSkyWalking\uff0c\u5b9e\u65f6\u6027\u8981\u6c42\u66f4\u4f4e\u4e00\u4e9b\uff0c\u6211\u4eec\u53ef\u4ee5\u8bbe\u7f6e\u4e3a30s\u3002<\/p>\n\n\n\n<p>\u8bbe\u7f6e\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\"index.refresh_interval\":\"5s\"\n\u590d\u5236\u4ee3\u7801<\/code><\/pre>\n\n\n\n<h6 class=\"wp-block-heading\">2.2.2.3 \u4f18\u5316 merge<\/h6>\n\n\n\n<p>index.merge.scheduler.max_thread_count \u63a7\u5236\u5e76\u53d1\u7684 merge \u7ebf\u7a0b\u6570\uff0c\u5982\u679c\u5b58\u50a8\u662f\u5e76\u53d1\u6027\u80fd\u8f83\u597d\u7684 SSD\uff0c\u53ef\u4ee5\u7528\u7cfb\u7edf\u9ed8\u8ba4\u7684 max(1, min(4, availableProcessors \/ 2))\uff0c\u5f53\u8282\u70b9\u914d\u7f6e\u7684 cpu \u6838\u6570\u8f83\u9ad8\u65f6\uff0cmerge \u5360\u7528\u7684\u8d44\u6e90\u53ef\u80fd\u4f1a\u504f\u9ad8\uff0c\u5f71\u54cd\u96c6\u7fa4\u7684\u6027\u80fd\uff0c\u666e\u901a\u78c1\u76d8\u7684\u8bdd\u8bbe\u4e3a1\uff0c\u53d1\u751f\u78c1\u76d8 IO \u5835\u585e\u3002\u8bbe\u7f6emax_thread_count \u540e\uff0c\u4f1a\u6709 max_thread_count + 2 \u4e2a\u7ebf\u7a0b\u540c\u65f6\u8fdb\u884c\u78c1\u76d8\u64cd\u4f5c\uff0c\u4e5f\u5c31\u662f\u8bbe\u7f6e\u4e3a 1 \u5141\u8bb83\u4e2a\u7ebf\u7a0b\u3002<\/p>\n\n\n\n<p>\u8bbe\u7f6e\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\"index.merge.scheduler.max_thread_count\":\"1\"\n\u590d\u5236\u4ee3\u7801<\/code><\/pre>\n\n\n\n<h5 class=\"wp-block-heading\">2.2.2 \u4f18\u5316\u8bbe\u7f6e<\/h5>\n\n\n\n<h6 class=\"wp-block-heading\">2.2.2.1 \u5bf9\u73b0\u6709\u7d22\u5f15\u505a\u7d22\u5f15\u8bbe\u7f6e<\/h6>\n\n\n\n<pre class=\"wp-block-code\"><code><em># \u9700\u8981\u5148 close \u7d22\u5f15,\u7136\u540e\u518d\u6267\u884c,\u6700\u540e\u6210\u529f\u4e4b\u540e\u518d\u6253\u5f00<\/em>\n<em># \u5173\u95ed\u7d22\u5f15<\/em>\ncurl -XPOST 'http:\/\/localhost:9200\/_all\/_close'\n\n<em># \u4fee\u6539\u7d22\u5f15\u8bbe\u7f6e<\/em>\ncurl -XPUT -H \"Content-Type:application\/json\" 'http:\/\/localhost:9200\/_all\/_settings?preserve_existing=true' -d '{\"index.merge.scheduler.max_thread_count\" : \"1\",\"index.refresh_interval\" : \"10s\",\"index.translog.durability\" : \"async\",\"index.translog.flush_threshold_size\":\"1024mb\",\"index.translog.sync_interval\" : \"120s\"}'\n\n# \u6253\u5f00\u7d22\u5f15\ncurl -XPOST 'http:\/\/localhost:9200\/_all\/_open'\n\u590d\u5236\u4ee3\u7801<\/code><\/pre>\n\n\n\n<p>\u8be5\u65b9\u5f0f\u53ef\u5bf9\u5df2\u7ecf\u751f\u6210\u7684\u7d22\u5f15\u505a\u4fee\u6539\uff0c\u4f46\u662f\u5bf9\u4e8e\u540e\u7eed\u65b0\u5efa\u7684\u7d22\u5f15\u4e0d\u751f\u6548\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u5236\u4f5c ES \u6a21\u677f\uff0c\u65b0\u5efa\u7684\u7d22\u5f15\u6309\u6a21\u677f\u521b\u5efa\u7d22\u5f15\u3002<\/p>\n\n\n\n<h6 class=\"wp-block-heading\">2.2.2.2 \u5236\u4f5c\u7d22\u5f15\u6a21\u677f<\/h6>\n\n\n\n<pre class=\"wp-block-code\"><code><em># \u5236\u4f5c\u6a21\u677f \u5927\u90e8\u5206\u7d22\u5f15\u90fd\u662f\u4e1a\u52a1\u5e94\u7528\u7684\u65e5\u5fd7\u76f8\u5173\u7684\u7d22\u5f15\uff0c\u4e14\u7d22\u5f15\u540d\u79f0\u662f 202* \u8fd9\u79cd\u5e26\u7740\u65e5\u671f\u7684\u683c\u5f0f<\/em>\nPUT _template\/business_log\n{\n  \"index_patterns\": &#91;\"*202*.*.*\"],\n  \"settings\": {\n  \"index.merge.scheduler.max_thread_count\" : \"1\",\"index.refresh_interval\" : \"5s\",\"index.translog.durability\" : \"async\",\"index.translog.flush_threshold_size\":\"1024mb\",\"index.translog.sync_interval\" : \"120s\"}\n}\n\n<em># \u67e5\u8be2\u6a21\u677f\u662f\u5426\u521b\u5efa\u6210\u529f<\/em>\nGET _template\/business_log\n\u590d\u5236\u4ee3\u7801<\/code><\/pre>\n\n\n\n<p>\u56e0\u4e3a\u6211\u4eec\u7684\u4e1a\u52a1\u65e5\u5fd7\u662f\u6309\u5929\u7ef4\u5ea6\u521b\u5efa\u7d22\u5f15\uff0c\u7d22\u5f15\u540d\u79f0\u793a\u4f8b\uff1auser-service-prod-2020.12.12\uff0c\u6240\u4ee5\u7528\u901a\u914d\u7b26**<em>202<\/em>.*.**\u5339\u914d\u5bf9\u5e94\u8981\u521b\u5efa\u7684\u4e1a\u52a1\u65e5\u5fd7\u7d22\u5f15\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.2 \u4f18\u5316\u7ebf\u7a0b\u6c60\u914d\u7f6e<\/h3>\n\n\n\n<p>\u524d\u6587\u5df2\u7ecf\u63d0\u5230\u8fc7\uff0cwrite \u7ebf\u7a0b\u6c60\u6ee1\u8d1f\u8377\uff0c\u5bfc\u81f4\u62d2\u7edd\u4efb\u52a1\uff0c\u800c\u6709\u7684\u6570\u636e\u65e0\u6cd5\u5199\u5165\u3002<\/p>\n\n\n\n<p>\u800c\u7ecf\u8fc7\u4e0a\u9762\u7684\u4f18\u5316\u540e\uff0c\u62d2\u7edd\u7684\u60c5\u51b5\u5c11\u4e86\u5f88\u591a\uff0c\u4f46\u662f\u8fd8\u662f\u6709\u62d2\u7edd\u4efb\u52a1\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u6211\u4eec\u8fd8\u9700\u8981\u4f18\u5316write\u7ebf\u7a0b\u6c60\u3002<\/p>\n\n\n\n<p><strong>\u4ece prometheus \u76d1\u63a7\u4e2d\u53ef\u4ee5\u770b\u5230\u7ebf\u7a0b\u6c60\u7684\u60c5\u51b5\uff1a<\/strong><\/p>\n\n\n\n<p>\u4e3a\u4e86\u66f4\u76f4\u89c2\u770b\u5230ES\u7ebf\u7a0b\u6c60\u7684\u8fd0\u884c\u60c5\u51b5\uff0c\u6211\u4eec\u5b89\u88c5\u4e86 elasticsearch_exporter \u6536\u96c6 ES \u7684\u6307\u6807\u6570\u636e\u5230 prometheus\uff0c\u518d\u901a\u8fc7 grafana \u8fdb\u884c\u67e5\u770b\u3002<\/p>\n\n\n\n<p>\u7ecf\u8fc7\u4e0a\u9762\u7684\u5404\u79cd\u4f18\u5316\uff0c\u62d2\u7edd\u7684\u6570\u636e\u91cf\u5c11\u4e86\u5f88\u591a\uff0c\u4f46\u662f\u8fd8\u662f\u5b58\u5728\u62d2\u7edd\u7684\u60c5\u51b5\uff0c\u5982\u4e0b\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/p3-juejin.byteimg.com\/tos-cn-i-k3u1fbpfcp\/a2f1ca90b64d4f39bbd1e28e4390623d~tplv-k3u1fbpfcp-zoom-in-crop-mark:4536:0:0:0.awebp\" alt=\"image.png\"\/><\/figure>\n\n\n\n<p><strong>write \u7ebf\u7a0b\u6c60\u5982\u4f55\u8bbe\u7f6e\uff1a<\/strong><\/p>\n\n\n\n<p>\u53c2\u8003\uff1a<a href=\"https:\/\/link.juejin.cn\/?target=https%3A%2F%2Fwww.elastic.co%2Fguide%2Fen%2Felasticsearch%2Freference%2F6.3%2Fmodules-threadpool.html%23modules-threadpool\" target=\"_blank\" rel=\"noreferrer noopener\">ElasticSearch\u7ebf\u7a0b\u6c60<\/a><\/p>\n\n\n\n<blockquote class=\"wp-block-quote\">\n<p><strong><code>write<\/code><\/strong><\/p>\n\n\n\n<p>For single-document index\/delete\/update and bulk requests. Thread pool type is&nbsp;<code>fixed<\/code>&nbsp;with a size of&nbsp;<code># of available processors<\/code>, queue_size of&nbsp;<code>200<\/code>. The maximum size for this pool is&nbsp;<code>1 + # of available processors<\/code>.<\/p>\n<\/blockquote>\n\n\n\n<p>write \u7ebf\u7a0b\u6c60\u91c7\u7528 fixed \u7c7b\u578b\u7684\u7ebf\u7a0b\u6c60\uff0c\u4e5f\u5c31\u662f\u6838\u5fc3\u7ebf\u7a0b\u6570\u4e0e\u6700\u5927\u7ebf\u7a0b\u6570\u503c\u76f8\u540c\u3002\u7ebf\u7a0b\u6570\u9ed8\u8ba4\u7b49\u4e8e cpu \u6838\u6570\uff0c\u53ef\u8bbe\u7f6e\u7684\u6700\u5927\u503c\u53ea\u80fd\u662f cpu \u6838\u6570\u52a01\uff0c\u4e5f\u5c31\u662f16\u6838CPU\uff0c\u80fd\u8bbe\u7f6e\u7684\u7ebf\u7a0b\u6570\u6700\u5927\u503c\u4e3a17\u3002<\/p>\n\n\n\n<p><strong>\u4f18\u5316\u7684\u65b9\u6848\uff1a<\/strong><\/p>\n\n\n\n<ul>\n<li>\u7ebf\u7a0b\u6570\u6539\u4e3a17\uff0c\u4e5f\u5c31\u662f cpu \u603b\u6838\u6570\u52a01<\/li>\n\n\n\n<li>\u961f\u5217\u5bb9\u91cf\u52a0\u5927\u3002\u961f\u5217\u5728\u6b64\u65f6\u7684\u4f5c\u7528\u662f\u6d88\u5cf0\u3002\u4e0d\u8fc7\u961f\u5217\u5bb9\u91cf\u52a0\u5927\u672c\u8eab\u4e0d\u4f1a\u63d0\u5347\u5904\u7406\u901f\u5ea6\uff0c\u53ea\u662f\u8d77\u5230\u7f13\u51b2\u4f5c\u7528\u3002\u6b64\u5916\uff0c\u961f\u5217\u5bb9\u91cf\u4e5f\u4e0d\u80fd\u592a\u5927\uff0c\u5426\u5219\u79ef\u538b\u5f88\u591a\u4efb\u52a1\u65f6\u4f1a\u5360\u7528\u8fc7\u591a\u5806\u5185\u5b58\u3002<\/li>\n<\/ul>\n\n\n\n<p>config\/elasticsearch.yml\u6587\u4ef6\u589e\u52a0\u914d\u7f6e<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><em># \u7ebf\u7a0b\u6570\u8bbe\u7f6e<\/em>\nthread_pool:\n  write:\n    <em># \u7ebf\u7a0b\u6570\u9ed8\u8ba4\u7b49\u4e8ecpu\u6838\u6570\uff0c\u537316  <\/em>\n    size: 17\n    <em># \u56e0\u4e3a\u4efb\u52a1\u591a\u65f6\u5b58\u5728\u4efb\u52a1\u62d2\u7edd\u7684\u60c5\u51b5\uff0c\u6240\u4ee5\u52a0\u5927\u961f\u5217\u5927\u5c0f\uff0c\u53ef\u4ee5\u5728\u95f4\u6b47\u6027\u4efb\u52a1\u91cf\u9661\u589e\u7684\u60c5\u51b5\u4e0b\uff0c\u7f13\u5b58\u4efb\u52a1\u5728\u961f\u5217\uff0c\u7b49\u9ad8\u5cf0\u8fc7\u53bb\u9010\u6b65\u6d88\u8d39\u5b8c\u3002<\/em>\n    queue_size: 10000\n\u590d\u5236\u4ee3\u7801<\/code><\/pre>\n\n\n\n<p><strong>\u4f18\u5316\u540e\u6548\u679c<\/strong>&nbsp;<img decoding=\"async\" src=\"https:\/\/p3-juejin.byteimg.com\/tos-cn-i-k3u1fbpfcp\/584ec310cf614c6898275a49a6d0f093~tplv-k3u1fbpfcp-zoom-in-crop-mark:4536:0:0:0.awebp\" alt=\"\u7ebf\u7a0b\u6c60\u62d2\u7edd\u7684\u60c5\u51b5.png\">&nbsp;\u53ef\u4ee5\u770b\u5230\uff0c\u5df2\u7ecf\u6ca1\u6709\u62d2\u7edd\u7684\u60c5\u51b5\uff0c\u8fd9\u6837\u4e5f\u5c31\u662f\u89e3\u51b3\u4e86\u65e5\u5fd7\u4e22\u5931\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n<p>###\u30002.\uff13 \u9501\u5b9a\u5185\u5b58\uff0c\u4e0d\u8ba9 JVM \u4f7f\u7528 Swap<\/p>\n\n\n\n<p><strong>Swap \u4ea4\u6362\u5206\u533a<\/strong>:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\">\n<p>Swap \u5206\u533a\u901a\u5e38\u88ab\u79f0\u4e3a\u4ea4\u6362\u5206\u533a\uff0c\u8fd9\u662f\u4e00\u5757\u7279\u6b8a\u7684\u786c\u76d8\u7a7a\u95f4\uff0c\u5373\u5f53\u7269\u7406\u5185\u5b58\u4e0d\u591f\u7528\u7684\u65f6\u5019\uff0c\u64cd\u4f5c\u7cfb\u7edf\u4f1a\u4ece\u7269\u7406\u5185\u5b58\u4e2d\u53d6\u51fa\u4e00\u90e8\u5206\u6682\u65f6\u4e0d\u7528\u7684\u6570\u636e\uff0c\u653e\u5728\u4ea4\u6362\u5206\u533a\u4e2d\uff0c\u4ece\u800c\u4e3a\u5f53\u524d\u8fd0\u884c\u7684\u7a0b\u5e8f\u817e\u51fa\u8db3\u591f\u7684\u5185\u5b58\u7a7a\u95f4\u3002\u4e5f\u5c31\u662f\u5f53\u7269\u7406\u5185\u5b58\u4e0d\u591f\u7528\u65f6\uff0c\u7528\u78c1\u76d8\u6765\u9876\u66ff\u7269\u7406\u5185\u5b58\u3002 \u4f18\u70b9\u662f\uff1a\u901a\u8fc7\u64cd\u4f5c\u7cfb\u7edf\u7684\u8c03\u5ea6\uff0c\u5e94\u7528\u7a0b\u5e8f\u5b9e\u9645\u53ef\u4ee5\u4f7f\u7528\u7684\u5185\u5b58\u7a7a\u95f4\u5c06\u8fdc\u8fdc\u8d85\u8fc7\u7cfb\u7edf\u7684\u7269\u7406\u5185\u5b58\u3002\u7531\u4e8e\u786c\u76d8\u7a7a\u95f4\u7684\u4ef7\u683c\u8fdc\u6bd4 RAM \u8981\u4f4e\uff0c\u56e0\u6b64\u8fd9\u79cd\u65b9\u5f0f\u65e0\u7591\u662f\u7ecf\u6d4e\u5b9e\u60e0\u7684\u3002 \u7f3a\u70b9\u662f\uff1a\u9891\u7e41\u5730\u8bfb\u5199\u786c\u76d8\uff0c\u4f1a\u663e\u8457\u964d\u4f4e\u64cd\u4f5c\u7cfb\u7edf\u7684\u8fd0\u884c\u901f\u7387\uff0c\u8fd9\u4e5f\u662f\u4f7f\u7528 swap \u4ea4\u6362\u5206\u533a\u6700\u5927\u7684\u9650\u5236\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u53c2\u8003\uff1a<a href=\"https:\/\/link.juejin.cn\/?target=https%3A%2F%2Fwww.elastic.co%2Fguide%2Fen%2Felasticsearch%2Freference%2F6.3%2Fsetup-configuration-memory.html\" target=\"_blank\" rel=\"noreferrer noopener\">ElasticSearch\u5b98\u65b9\u89e3\u91ca\u4e3a\u4ec0\u4e48\u8981\u7981\u7528\u4ea4\u6362\u5185\u5b58<\/a><\/p>\n\n\n\n<blockquote class=\"wp-block-quote\">\n<p>Swap \u4ea4\u6362\u5206\u533a\u5bf9\u6027\u80fd\u548c\u8282\u70b9\u7a33\u5b9a\u6027\u975e\u5e38\u4e0d\u5229\uff0c\u4e00\u5b9a\u8981\u7981\u7528\u3002\u5b83\u4f1a\u5bfc\u81f4\u5783\u573e\u56de\u6536\u6301\u7eed\u51e0\u5206\u949f\u800c\u4e0d\u662f\u51e0\u6beb\u79d2\uff0c\u5e76\u4f1a\u5bfc\u81f4\u8282\u70b9\u54cd\u5e94\u7f13\u6162\uff0c\u751a\u81f3\u4e0e\u96c6\u7fa4\u65ad\u5f00\u8fde\u63a5\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u6709\u4e09\u79cd\u65b9\u5f0f\u53ef\u4ee5\u5b9e\u73b0 ES \u4e0d\u4f7f\u7528Swap\u5206\u533a<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2.3.1 Linux \u7cfb\u7edf\u4e2d\u7684\u5173\u95ed Swap (\u4e34\u65f6\u6709\u6548)<\/h4>\n\n\n\n<p>\u6267\u884c\u547d\u4ee4<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo swapoff -<strong>a<\/strong>\n\u590d\u5236\u4ee3\u7801<\/code><\/pre>\n\n\n\n<p>\u53ef\u4ee5\u4e34\u65f6\u7981\u7528 Swap \u5185\u5b58\uff0c\u4f46\u662f\u64cd\u4f5c\u7cfb\u7edf\u91cd\u542f\u540e\u5931\u6548<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2.3.2 Linux \u7cfb\u7edf\u4e2d\u7684\u5c3d\u53ef\u80fd\u51cf\u5c11 Swap \u7684\u4f7f\u7528(\u6c38\u4e45\u6709\u6548)<\/h4>\n\n\n\n<p>\u6267\u884c\u4e0b\u5217\u547d\u4ee4<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>echo \"vm.swappiness = 1\"&gt;&gt; \/etc\/sysctl.conf\n\u590d\u5236\u4ee3\u7801<\/code><\/pre>\n\n\n\n<p>\u6b63\u5e38\u60c5\u51b5\u4e0b\u4e0d\u4f1a\u4f7f\u7528 Swap\uff0c\u9664\u975e\u7d27\u6025\u60c5\u51b5\u4e0b\u624d\u4f1a Swap\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2.3.3 \u542f\u7528 bootstrap.memory_lock<\/h4>\n\n\n\n<p>config\/elasticsearch.yml \u6587\u4ef6\u589e\u52a0\u914d\u7f6e<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><em>#\u9501\u5b9a\u5185\u5b58\uff0c\u4e0d\u8ba9 JVM \u5199\u5165 Swap\uff0c\u907f\u514d\u964d\u4f4e ES \u7684\u6027\u80fd<\/em>\nbootstrap.memory_lock: true\n\u590d\u5236\u4ee3\u7801<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">2.4 \u51cf\u5c11\u5206\u7247\u6570\u3001\u526f\u672c\u6570<\/h3>\n\n\n\n<p><strong>\u5206\u7247<\/strong><\/p>\n\n\n\n<p>\u7d22\u5f15\u7684\u5927\u5c0f\u53d6\u51b3\u4e8e\u5206\u7247\u4e0e\u6bb5\u7684\u5927\u5c0f\uff0c\u5206\u7247\u8fc7\u5c0f\uff0c\u53ef\u80fd\u5bfc\u81f4\u6bb5\u8fc7\u5c0f\uff0c\u8fdb\u800c\u5bfc\u81f4\u5f00\u9500\u589e\u52a0\uff1b\u5206\u7247\u8fc7\u5927\u53ef\u80fd\u5bfc\u81f4\u5206\u7247\u9891\u7e41 Merge\uff0c\u4ea7\u751f\u5927\u91cf IO \u64cd\u4f5c\uff0c\u5f71\u54cd\u5199\u5165\u6027\u80fd\u3002<\/p>\n\n\n\n<p>\u56e0\u4e3a\u6211\u4eec\u6bcf\u4e2a\u7d22\u5f15\u7684\u5927\u5c0f\u572815G\u4ee5\u4e0b\uff0c\u800c\u9ed8\u8ba4\u662f5\u4e2a\u5206\u7247\uff0c\u6ca1\u6709\u5fc5\u8981\u8fd9\u4e48\u591a\uff0c\u6240\u4ee5\u8c03\u6574\u4e3a3\u4e2a\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\"index.number_of_shards\": \"3\"\n\u590d\u5236\u4ee3\u7801<\/code><\/pre>\n\n\n\n<p>\u5206\u7247\u7684\u8bbe\u7f6e\u6211\u4eec\u4e5f\u53ef\u4ee5\u914d\u7f6e\u5728\u7d22\u5f15\u6a21\u677f\u3002<\/p>\n\n\n\n<p><strong>\u526f\u672c\u6570<\/strong><\/p>\n\n\n\n<p>\u51cf\u5c11\u96c6\u7fa4\u526f\u672c\u5206\u7247\u6570\uff0c\u8fc7\u591a\u526f\u672c\u4f1a\u5bfc\u81f4 ES \u5185\u90e8\u5199\u6269\u5927\u3002\u526f\u672c\u6570\u9ed8\u8ba4\u4e3a1\uff0c\u5982\u679c\u67d0\u7d22\u5f15\u6240\u5728\u76841\u4e2a\u8282\u70b9\u5b95\u673a\uff0c\u62e5\u6709\u526f\u672c\u7684\u53e6\u4e00\u53f0\u673a\u5668\u62e5\u6709\u7d22\u5f15\u5907\u4efd\u6570\u636e\uff0c\u53ef\u4ee5\u8ba9\u7d22\u5f15\u6570\u636e\u6b63\u5e38\u4f7f\u7528\u3002\u4f46\u662f\u6570\u636e\u5199\u5165\u526f\u672c\u4f1a\u5f71\u54cd\u5199\u5165\u6027\u80fd\u3002\u5bf9\u4e8e\u65e5\u5fd7\u6570\u636e\uff0c\u67091\u4e2a\u526f\u672c\u5373\u53ef\u3002\u5bf9\u4e8e\u5927\u6570\u636e\u91cf\u7684\u7d22\u5f15\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u526f\u672c\u6570\u4e3a0\uff0c\u51cf\u5c11\u5bf9\u6027\u80fd\u7684\u5f71\u54cd\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\"index.number_of_replicas\": \"1\"\n\u590d\u5236\u4ee3\u7801<\/code><\/pre>\n\n\n\n<p>\u5206\u7247\u7684\u8bbe\u7f6e\u6211\u4eec\u4e5f\u53ef\u4ee5\u914d\u7f6e\u5728\u7d22\u5f15\u6a21\u677f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.\u63a7\u5236\u6570\u636e\u6765\u6e90<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">3.1 \u5e94\u7528\u6309\u89c4\u8303\u6253\u5370\u65e5\u5fd7<\/h4>\n\n\n\n<p>\u6709\u7684\u5e94\u75281\u5929\u751f\u621010G\u65e5\u5fd7\uff0c\u800c\u4e00\u822c\u7684\u5e94\u7528\u53ea\u6709\u51e0\u767e\u52301G\u3002\u4e00\u5929\u751f\u621010G\u65e5\u5fd7\u4e00\u822c\u662f\u56e0\u4e3a\u90e8\u5206\u5e94\u7528\u65e5\u5fd7\u4f7f\u7528\u4e0d\u5f53\uff0c\u5f88\u591a\u5927\u6570\u91cf\u7684\u65e5\u5fd7\u53ef\u4ee5\u4e0d\u6253\uff0c\u6bd4\u5982\u5927\u6570\u636e\u91cf\u7684\u5217\u8868\u67e5\u8be2\u63a5\u53e3\u3001\u62a5\u8868\u6570\u636e\u3001debug \u7ea7\u522b\u65e5\u5fd7\u7b49\u6570\u636e\u662f\u4e0d\u7528\u4e0a\u4f20\u5230\u65e5\u5fd7\u670d\u52a1\u5668\uff0c\u8fd9\u4e9b<strong>\u5373\u5f71\u54cd\u65e5\u5fd7\u5b58\u50a8\u7684\u6027\u80fd\uff0c\u66f4\u5f71\u54cd\u5e94\u7528\u81ea\u8eab\u6027\u80fd<\/strong>\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u56db\u3001ES\u6027\u80fd\u4f18\u5316\u540e\u7684\u6548\u679c<\/h1>\n\n\n\n<p><strong>\u4f18\u5316\u540e\u7684\u4e24\u5468\u5185ELK\u6027\u80fd\u826f\u597d\uff0c\u6ca1\u6709\u4f7f\u7528\u4e0a\u7684\u95ee\u9898\uff1a<\/strong><\/p>\n\n\n\n<ul>\n<li>ES \u6570\u636e\u4e0d\u518d\u4e22\u5931<\/li>\n\n\n\n<li>\u6570\u636e\u5ef6\u65f6\u572810\u79d2\u4e4b\u5185\uff0c\u4e00\u822c\u57285\u79d2\u53ef\u4ee5\u67e5\u51fa<\/li>\n\n\n\n<li>\u6bcf\u4e2a ES \u8282\u70b9\u8d1f\u8f7d\u6bd4\u8f83\u7a33\u5b9a\uff0cCPU \u548c\u5185\u5b58\u4f7f\u7528\u7387\u90fd\u4e0d\u4f1a\u8fc7\u9ad8\uff0c\u5982\u4e0b\u56fe<img decoding=\"async\" src=\"https:\/\/p3-juejin.byteimg.com\/tos-cn-i-k3u1fbpfcp\/77ed8d92915b45058dccde149123b687~tplv-k3u1fbpfcp-zoom-in-crop-mark:4536:0:0:0.awebp\" alt=\"ES\u8282\u70b9\u8fd0\u884c\u60c5\u51b5.png\"><\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">\u4e94\u3001\u53c2\u8003\u6587\u6863<\/h1>\n\n\n\n<p><strong>\u53c2\u8003<\/strong><\/p>\n\n\n\n<blockquote class=\"wp-block-quote\">\n<p><a href=\"https:\/\/juejin.cn\/post\/6844903689480568840\" target=\"_blank\" rel=\"noreferrer noopener\">\u8bb0\u4e00\u6b21 ElasticSearch \u4f18\u5316\u603b\u7ed3<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/link.juejin.cn\/?target=https%3A%2F%2Fwww.cnblogs.com%2Fzhangan%2Fp%2F11231990.html\" target=\"_blank\" rel=\"noreferrer noopener\">ElasticSearch \u7684\u6570\u636e\u5199\u5165\u6d41\u7a0b\u53ca\u4f18\u5316<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/link.juejin.cn\/?target=https%3A%2F%2Fwww.cnblogs.com%2Fqcloud1001%2Fp%2F14068642.html\" target=\"_blank\" rel=\"noreferrer noopener\">\u767e\u4ebf\u7ea7\u5b9e\u65f6\u8ba1\u7b97\u7cfb\u7edf\u6027\u80fd\u4f18\u5316\u2013\u2014ElasticSearch\u7bc7<\/a><\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>\u539f\u6587\uff1aElasticSearch\u6027\u80fd\u4f18\u5316\u5b9e\u8df5(JVM\u8c03\u4f18+ES\u8c03\u4f18) &#8211; \u6398\u91d1 (juejin.c 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