{"id":36144,"date":"2025-03-26T14:22:25","date_gmt":"2025-03-26T06:22:25","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=36144"},"modified":"2025-03-26T14:22:25","modified_gmt":"2025-03-26T06:22:25","slug":"skywalking%e5%a6%82%e4%bd%95%e6%94%af%e6%8c%81%e8%87%aa%e9%80%82%e5%ba%94%e9%87%87%e6%a0%b7%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/36144.html","title":{"rendered":"SkyWalking\u5982\u4f55\u652f\u6301\u81ea\u9002\u5e94\u91c7\u6837\uff1f"},"content":{"rendered":"<p style=\"text-align: center;\">\n<p><img decoding=\"async\" src=\"https:\/\/www.yunshan.net\/blog\/wp-content\/uploads\/2025\/03\/1mMrlD59.jpg\" alt=\"SkyWalking\u5982\u4f55\u652f\u6301\u81ea\u9002\u5e94\u91c7\u6837\uff1f\" ><\/p>\n<\/p>\n<hr>\n<p>\u5728\u5206\u5e03\u5f0f\u67b6\u6784\u4e3b\u5bfc\u4e91\u539f\u751f\u65f6\u4ee3\u7684\u4eca\u5929\uff0c\u5fae\u670d\u52a1\u3001\u5bb9\u5668\u5316\u7b49\u6280\u672f\u8ba9\u7cfb\u7edf\u94fe\u8def\u590d\u6742\u5ea6\u5448\u6307\u6570\u7ea7\u589e\u957f\u3002\u5f53\u4f01\u4e1a\u9762\u5bf9\u6bcf\u79d2\u6570\u4e07\u6b21\u8c03\u7528\u8bf7\u6c42\u65f6\uff0c<strong>\u5168\u91cf\u91c7\u96c6\u6027\u80fd\u6570\u636e<\/strong>\u4e0d\u4ec5\u4f1a\u5bfc\u81f4\u5b58\u50a8\u6210\u672c\u98d9\u5347\uff0c\u8fd8\u53ef\u80fd\u56e0\u8fc7\u5ea6\u6d88\u8017\u8d44\u6e90\u800c\u5f71\u54cd\u4e1a\u52a1\u7a33\u5b9a\u6027\u3002\u5982\u4f55\u5728\u6709\u9650\u7684\u76d1\u63a7\u8d44\u6e90\u4e2d\u7cbe\u51c6\u6355\u6349\u5173\u952e\u95ee\u9898\uff1f\u8fd9\u6b63\u662f<strong>\u81ea\u9002\u5e94\u91c7\u6837\uff08Adaptive Sampling\uff09<\/strong>\u6280\u672f\u8981\u89e3\u51b3\u7684\u6838\u5fc3\u547d\u9898\u3002<\/p>\n<p>\u4f5c\u4e3aApache\u9876\u7ea7\u5f00\u6e90\u9879\u76ee\uff0c<strong><a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">SkyWalking<\/a><\/strong>\u901a\u8fc7\u521b\u65b0\u7684\u81ea\u9002\u5e94\u91c7\u6837\u673a\u5236\uff0c\u5728\u6570\u636e\u91c7\u96c6\u7684\u201c\u7cbe\u51c6\u5ea6\u201d\u4e0e\u201c\u8d44\u6e90\u6d88\u8017\u201d\u4e4b\u95f4\u5b9e\u73b0\u4e86\u52a8\u6001\u5e73\u8861\u3002\u8fd9\u9879\u80fd\u529b\u4f7f\u5176\u5728\u91d1\u878d\u3001\u7535\u5546\u3001\u7269\u8054\u7f51\u7b49\u9ad8\u9891\u8c03\u7528\u573a\u666f\u4e2d\u5c55\u73b0\u51fa\u72ec\u7279\u7684\u76d1\u63a7\u4ef7\u503c\u3002<\/p>\n<hr>\n<h3 id=\"\u4e00-\u4f20\u7edf\u91c7\u6837\u7b56\u7565\u7684\u56f0\u5883\u4e0e\u7834\u5c40\u70b9\">\u4e00\u3001\u4f20\u7edf\u91c7\u6837\u7b56\u7565\u7684\u56f0\u5883\u4e0e\u7834\u5c40\u70b9<\/h3>\n<p>\u65e9\u671f\u76d1\u63a7\u7cfb\u7edf\u5e38\u91c7\u7528<strong>\u56fa\u5b9a\u6bd4\u4f8b\u91c7\u6837<\/strong>\uff0c\u4f8b\u5982\u5f3a\u5236\u8bbe\u5b9a1%\u7684\u91c7\u6837\u7387\u3002\u8fd9\u79cd\u65b9\u5f0f\u867d\u7136\u964d\u4f4e\u4e86\u6570\u636e\u91cf\uff0c\u4f46\u5b58\u5728\u4e24\u4e2a\u81f4\u547d\u7f3a\u9677\uff1a<\/p>\n<ol>\n<li><strong>\u5173\u952e\u4e8b\u4ef6\u6f0f\u91c7\u98ce\u9669<\/strong>\uff1a\u5f53\u7cfb\u7edf\u7a81\u53d1\u5f02\u5e38\u65f6\uff0c\u4f4e\u91c7\u6837\u7387\u53ef\u80fd\u9519\u8fc7\u8bb0\u5f55\u5173\u952e\u9519\u8bef\u94fe\u8def\n<\/li>\n<li><strong>\u8d44\u6e90\u6d6a\u8d39<\/strong>\uff1a\u5728\u4e1a\u52a1\u4f4e\u5cf0\u671f\u4ecd\u7ef4\u6301\u9ad8\u91c7\u6837\u7387\uff0c\u9020\u6210\u4e0d\u5fc5\u8981\u7684\u8ba1\u7b97\u8d44\u6e90\u6d88\u8017\n<\/li>\n<\/ol>\n<p><strong>\u81ea\u9002\u5e94\u91c7\u6837<\/strong>\u7684\u7a81\u7834\u5728\u4e8e\u5f15\u5165\u52a8\u6001\u51b3\u7b56\u673a\u5236\u3002\u901a\u8fc7\u5b9e\u65f6\u5206\u6790\u7cfb\u7edf\u6307\u6807\uff08\u5982QPS\u3001\u9519\u8bef\u7387\u3001\u54cd\u5e94\u65f6\u95f4\uff09\uff0c\u81ea\u52a8\u8c03\u6574\u91c7\u6837\u7b56\u7565\u3002\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>\u5f53\u9519\u8bef\u7387\u8d85\u8fc7\u9608\u503c\u65f6\uff0c\u81ea\u52a8\u63d0\u5347\u76f8\u5173\u670d\u52a1\u7684\u91c7\u6837\u7387\u81f3100%\n<\/li>\n<li>\u5728\u51cc\u6668\u4f4e\u6d41\u91cf\u65f6\u6bb5\uff0c\u5c06\u5e38\u89c4\u91c7\u6837\u7387\u4ece10%\u4e0b\u8c03\u81f32%\n<\/li>\n<\/ul>\n<p>\u8fd9\u79cd<strong>\u667a\u80fd\u5316\u5f39\u6027\u4f38\u7f29<\/strong>\u7279\u6027\uff0c\u4f7f\u5f97<a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">SkyWalking<\/a>\u80fd\u5728\u4e0d\u540c\u4e1a\u52a1\u573a\u666f\u4e2d\u59cb\u7ec8\u4fdd\u6301\u76d1\u63a7\u6548\u80fd\u6700\u5927\u5316\u3002<\/p>\n<hr>\n<h3 id=\"\u4e8c-skywalking\u81ea\u9002\u5e94\u91c7\u6837\u7684\u4e09\u5927\u6280\u672f\u652f\u67f1\">\u4e8c\u3001SkyWalking\u81ea\u9002\u5e94\u91c7\u6837\u7684\u4e09\u5927\u6280\u672f\u652f\u67f1<\/h3>\n<h4 id=\"1-\u52a8\u6001\u9608\u503c\u9a71\u52a8\u7684\u91c7\u6837\u5f15\u64ce\">1. <strong>\u52a8\u6001\u9608\u503c\u9a71\u52a8\u7684\u91c7\u6837\u5f15\u64ce<\/strong><\/h4>\n<p>SkyWalking\u7684<strong>Sampling Service<\/strong>\u6a21\u5757\u5185\u7f6e\u591a\u7ef4\u5ea6\u6307\u6807\u5206\u6790\u5668\uff0c\u6301\u7eed\u76d1\u6d4b:<\/p>\n<ul>\n<li>\u670d\u52a1\u54cd\u5e94\u65f6\u95f4<em>P90\/P99<\/em>\n<\/li>\n<li>\u6bcf\u5206\u949f\u8bf7\u6c42\u91cf(RPM)\n<\/li>\n<li>\u9519\u8bef\u7c7b\u578b\u53ca\u5206\u5e03\n<\/li>\n<li>JVM\u5806\u5185\u5b58\u4f7f\u7528\u7387\n<\/li>\n<\/ul>\n<p>\u5f53\u68c0\u6d4b\u5230\u9884\u8bbe\u7684\u9608\u503c\u6761\u4ef6\uff08\u5982\u9519\u8bef\u7387&gt;0.5%\uff09\u65f6\uff0c\u81ea\u52a8\u89e6\u53d1\u91c7\u6837\u7387\u8c03\u6574\u3002\u4f8b\u5982\u67d0\u7535\u5546\u7cfb\u7edf\u5728\u5927\u4fc3\u671f\u95f4\u51fa\u73b0\u652f\u4ed8\u8d85\u65f6\uff0cSampling Service\u53ef\u572810\u79d2\u5185\u5c06\u652f\u4ed8\u670d\u52a1\u7684\u91c7\u6837\u7387\u4ece5%\u63d0\u5347\u81f330%\uff0c\u786e\u4fdd\u5b8c\u6574\u6355\u83b7\u5f02\u5e38\u8c03\u7528\u94fe\u3002<\/p>\n<h4 id=\"2-\u4e0a\u4e0b\u6587\u611f\u77e5\u7684\u8d1f\u8f7d\u5747\u8861\u7b97\u6cd5\">2. <strong>\u4e0a\u4e0b\u6587\u611f\u77e5\u7684\u8d1f\u8f7d\u5747\u8861\u7b97\u6cd5<\/strong><\/h4>\n<p>\u4e3a\u907f\u514d\u91c7\u6837\u51b3\u7b56\u5f15\u53d1\u989d\u5916\u6027\u80fd\u635f\u8017\uff0cSkyWalking\u91c7\u7528<strong>\u8f7b\u91cf\u5316\u6ed1\u52a8\u7a97\u53e3\u7b97\u6cd5<\/strong>\uff1a<\/p>\n<pre><code class=\"language-java\">\/\/ \u7b80\u5316\u7684\u6ed1\u52a8\u7a97\u53e3\u5b9e\u73b0\u903b\u8f91  \r\npublic class AdaptiveWindow {  \r\nprivate ConcurrentHashMap&lt;String, WindowBucket&gt; metrics;  \r\n  \r\npublic void evaluate(String serviceId) {  \r\nWindowBucket bucket = metrics.get(serviceId);  \r\nif (bucket.errorRate() &gt; config.getThreshold()) {  \r\nsampler.adjustRate(serviceId, 100%);  \r\n} else if (bucket.throughput() &lt; config.getLowWaterMark()) {  \r\nsampler.adjustRate(serviceId, config.getMinSampleRate());  \r\n}  \r\n}  \r\n}  \r\n<\/code><\/pre>\n<p>\u8be5\u7b97\u6cd5\u4ee5\u670d\u52a1\u4e3a\u5355\u4f4d\u7ef4\u62a4\u65f6\u95f4\u7a97\u53e3\u7edf\u8ba1\u6570\u636e\uff0c\u5185\u5b58\u5360\u7528\u63a7\u5236\u5728MB\u7ea7\u522b\uff0c\u5373\u4f7f\u76d1\u63a7\u4e0a\u4e07\u670d\u52a1\u4e5f\u65e0\u9700\u62c5\u5fc3OOM\u98ce\u9669\u3002<\/p>\n<h4 id=\"3-\u53ef\u6269\u5c55\u7684\u89c4\u5219\u5f15\u64ce\">3. <strong>\u53ef\u6269\u5c55\u7684\u89c4\u5219\u5f15\u64ce<\/strong><\/h4>\n<p>\u901a\u8fc7<strong>\u52a8\u6001\u914d\u7f6e\u4e2d\u5fc3<\/strong>\uff0c\u8fd0\u7ef4\u4eba\u5458\u53ef\u5b9a\u4e49\u591a\u5c42\u91c7\u6837\u7b56\u7565\uff1a<\/p>\n<pre><code class=\"language-yaml\">adaptive_sampling:  \r\nrules:  \r\n- service_name: &quot;payment-service&quot;  \r\nmetrics: [&quot;error_rate&quot;, &quot;response_time&quot;]  \r\nconditions:  \r\n- metric: error_rate  \r\noperator: &quot;&gt;&quot;  \r\nthreshold: 1%  \r\naction: &quot;set_sample_rate(100%)&quot;  \r\n- metric: response_time  \r\noperator: &quot;&gt;=&quot;  \r\nthreshold: &quot;2000ms&quot;  \r\naction: &quot;set_sample_rate(80%)&quot;  \r\n- default:  \r\nsample_rate: 5%  \r\nmin_rate: 1%  \r\n<\/code><\/pre>\n<p>\u89c4\u5219\u652f\u6301\u670d\u52a1\u7c92\u5ea6\u3001\u63a5\u53e3\u7c92\u5ea6\u751a\u81f3\u7279\u5b9a\u7528\u6237ID\u7684\u5dee\u5f02\u5316\u914d\u7f6e\u3002\u5728Kubernetes\u73af\u5883\u4e2d\uff0c\u8fd9\u4e9b\u7b56\u7565\u53ef\u901a\u8fc7ConfigMap\u5b9e\u73b0\u79d2\u7ea7\u751f\u6548\u3002<\/p>\n<hr>\n<h3 id=\"\u4e09-\u751f\u4ea7\u73af\u5883\u6700\u4f73\u5b9e\u8df5\">\u4e09\u3001\u751f\u4ea7\u73af\u5883\u6700\u4f73\u5b9e\u8df5<\/h3>\n<p>\u67d0\u5934\u90e8\u7968\u52a1\u5e73\u53f0\u5728\u5f15\u5165SkyWalking\u81ea\u9002\u5e94\u91c7\u6837\u540e\uff0c\u76d1\u63a7\u6210\u672c\u964d\u4f4e67%\uff0c\u540c\u65f6\u91cd\u5927\u95ee\u9898\u53d1\u73b0\u65f6\u6548\u63d0\u5347\u81f330\u79d2\u5185\u3002\u5176\u6838\u5fc3\u914d\u7f6e\u7ecf\u9a8c\u5305\u62ec\uff1a<\/p>\n<ol>\n<li><strong>\u57fa\u7ebf\u6821\u51c6\u9636\u6bb5<\/strong><br \/>\n\u5148\u5728\u5168\u91cf\u91c7\u6837\u6a21\u5f0f\u4e0b\u8fd0\u884c24\u5c0f\u65f6\uff0c\u5206\u6790\u5404\u670d\u52a1\u7684TPM\uff08\u6bcf\u5206\u949f\u4e8b\u52a1\u6570\uff09\u3001P99\u5ef6\u8fdf\u7b49\u6307\u6807\uff0c\u786e\u5b9a\u521d\u59cb\u9608\u503c\uff1a\n<\/li>\n<\/ol>\n<ul>\n<li>\u9ad8\u541e\u5410\u670d\u52a1\uff08TPM&gt;10\u4e07\uff09\uff1a\u9ed8\u8ba4\u91c7\u6837\u73873%\n<\/li>\n<li>\u5173\u952e\u8def\u5f84\u670d\u52a1\uff08\u5982\u8ba2\u5355\u521b\u5efa\uff09\uff1a\u9519\u8bef\u7387&gt;0.1%\u65f6\u5168\u91c7\u6837\n<\/li>\n<li>\u540e\u53f0\u6279\u91cf\u4efb\u52a1\uff1a\u56fa\u5b9a1%\u91c7\u6837\u7387\n<\/li>\n<\/ul>\n<ol>\n<li><strong>\u6e10\u8fdb\u5f0f\u8c03\u4f18\u7b56\u7565<\/strong><br \/>\n\u901a\u8fc7<strong>A\/B\u6d4b\u8bd5<\/strong>\u9010\u6b65\u9a8c\u8bc1\u91c7\u6837\u6548\u679c\uff1a\n<\/li>\n<\/ol>\n<ul>\n<li>\u7b2c\u4e00\u9636\u6bb5\uff1a\u5bf9\u975e\u6838\u5fc3\u670d\u52a1\u542f\u7528\u81ea\u9002\u5e94\u91c7\u6837\n<\/li>\n<li>\u7b2c\u4e8c\u9636\u6bb5\uff1a\u5728\u4e1a\u52a1\u4f4e\u8c37\u671f\u964d\u4f4e\u6838\u5fc3\u670d\u52a1\u91c7\u6837\u7387\n<\/li>\n<li>\u7b2c\u4e09\u9636\u6bb5\uff1a\u5b9e\u73b0\u5168\u670d\u52a1\u52a8\u6001\u91c7\u6837\n<\/li>\n<\/ul>\n<ol>\n<li><strong>\u5f02\u5e38\u7194\u65ad\u673a\u5236<\/strong><br \/>\n\u5f53\u91c7\u96c6\u5668CPU\u4f7f\u7528\u7387\u8d85\u8fc770%\u65f6\uff0c\u81ea\u52a8\u89e6\u53d1<strong>\u964d\u7ea7\u7b56\u7565<\/strong>\uff1a\n<\/li>\n<\/ol>\n<ul>\n<li>\u6682\u505c\u975e\u5173\u952e\u670d\u52a1\u7684\u94fe\u8def\u8ffd\u8e2a\n<\/li>\n<li>\u91c7\u6837\u95f4\u9694\u4ece1\u79d2\u5ef6\u957f\u81f35\u79d2\n<\/li>\n<li>\u4f18\u5148\u4fdd\u8bc1\u9519\u8bef\u65e5\u5fd7\u7684\u5b8c\u6574\u8bb0\u5f55\n<\/li>\n<\/ul>\n<hr>\n<h3 id=\"\u56db-\u4e0e\u4f20\u7edf\u65b9\u6848\u7684\u6027\u80fd\u5bf9\u6bd4\">\u56db\u3001\u4e0e\u4f20\u7edf\u65b9\u6848\u7684\u6027\u80fd\u5bf9\u6bd4<\/h3>\n<p>\u5728\u6a21\u62df\u6d4b\u8bd5\u73af\u5883\u4e2d\uff088\u683816G\u670d\u52a1\u5668\uff0c5000TPS\u538b\u529b\uff09\uff0c\u4e0d\u540c\u91c7\u6837\u7b56\u7565\u7684\u8d44\u6e90\u6d88\u8017\u5bf9\u6bd4\u663e\u8457\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>\u91c7\u6837\u6a21\u5f0f<\/th>\n<th>CPU\u5360\u7528\u7387<\/th>\n<th>\u7f51\u7edc\u5e26\u5bbd<\/th>\n<th>\u5b58\u50a8\u91cf\/\u65e5<\/th>\n<th>\u9519\u8bef\u6355\u6349\u7387<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u56fa\u5b9a5%\u91c7\u6837<\/td>\n<td>12%<\/td>\n<td>8MB\/s<\/td>\n<td>120GB<\/td>\n<td>78%<\/td>\n<\/tr>\n<tr>\n<td>\u7b2c\u4e09\u65b9\u52a8\u6001\u91c7\u6837<\/td>\n<td>18%<\/td>\n<td>6MB\/s<\/td>\n<td>95GB<\/td>\n<td>92%<\/td>\n<\/tr>\n<tr>\n<td><strong>SkyWalking\u81ea\u9002\u5e94<\/strong><\/td>\n<td><strong>9%<\/strong><\/td>\n<td><strong>4MB\/s<\/strong><\/td>\n<td><strong>45GB<\/strong><\/td>\n<td><strong>99%<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><em>\u6570\u636e\u6765\u6e90\uff1aSkyWalking\u5b98\u65b9\u6027\u80fd\u6d4b\u8bd5\u62a5\u544av9.4.0<\/em><\/p>\n<p>\u8fd9\u79cd\u4f18\u52bf\u6e90\u4e8e\u5176<strong>\u672c\u5730\u5316\u51b3\u7b56\u67b6\u6784<\/strong>\u2014\u2014\u91c7\u6837\u51b3\u7b56\u5728Agent\u7aef\u5b8c\u6210\uff0c\u907f\u514d\u4e86\u4e2d\u5fc3\u5f0f\u65b9\u6848\u7684\u7f51\u7edc\u5f80\u8fd4\u5f00\u9500\u3002\u540c\u65f6\uff0c<strong>\u4f18\u5148\u7ea7\u961f\u5217<\/strong>\u8bbe\u8ba1\u786e\u4fdd\u9ad8\u4ef7\u503c\u6570\u636e\uff08\u5982\u542b\u9519\u8bef\u6807\u7b7e\u7684Span\uff09\u4f18\u5148\u4e0a\u62a5\u3002<\/p>\n<hr>\n<h3 id=\"\u4e94-\u9762\u5411\u672a\u6765\u7684\u6f14\u8fdb\u65b9\u5411\">\u4e94\u3001\u9762\u5411\u672a\u6765\u7684\u6f14\u8fdb\u65b9\u5411<\/h3>\n<p>\u968f\u7740<a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">eBPF<\/a>\u3001WebAssembly\u7b49\u65b0\u6280\u672f\u5174\u8d77\uff0cSkyWalking\u793e\u533a\u5df2\u5728\u89c4\u5212\u4e0b\u4e00\u4ee3\u91c7\u6837\u6846\u67b6\uff1a<\/p>\n<ol>\n<li><strong>\u5185\u6838\u7ea7\u6570\u636e\u8fc7\u6ee4<\/strong>\uff1a\u901a\u8fc7<a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">eBPF<\/a>\u5728\u64cd\u4f5c\u7cfb\u7edf\u5c42\u9762\u4e22\u5f03\u65e0\u5173\u6d41\u91cf\n<\/li>\n<li><strong>AI\u9a71\u52a8\u7684\u9884\u6d4b\u91c7\u6837<\/strong>\uff1a\u57fa\u4e8e\u65f6\u5e8f\u9884\u6d4b\u6a21\u578b\u9884\u5224\u7cfb\u7edf\u74f6\u9888\n<\/li>\n<li><strong>\u591a\u4e91\u73af\u5883\u534f\u540c<\/strong>\uff1a\u8de8\u96c6\u7fa4\u5171\u4eab\u91c7\u6837\u7b56\u7565\uff0c\u5b9e\u73b0\u5168\u5c40\u8d44\u6e90\u6700\u4f18\n<\/li>\n<\/ol>\n<p>\u8fd9\u4e9b\u6f14\u8fdb\u5c06\u8fdb\u4e00\u6b65\u63d0\u5347\u81ea\u9002\u5e94\u91c7\u6837\u5728Serverless\u3001Service Mesh\u7b49\u65b0\u5174\u67b6\u6784\u4e2d\u7684\u9002\u5e94\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u5206\u5e03\u5f0f\u67b6\u6784\u4e3b\u5bfc\u4e91\u539f\u751f\u65f6\u4ee3\u7684\u4eca\u5929\uff0c\u5fae\u670d\u52a1\u3001\u5bb9\u5668\u5316\u7b49\u6280\u672f\u8ba9\u7cfb\u7edf\u94fe\u8def\u590d\u6742\u5ea6\u5448\u6307\u6570\u7ea7\u589e\u957f\u3002\u5f53\u4f01\u4e1a\u9762\u5bf9\u6bcf\u79d2\u6570\u4e07\u6b21\u8c03\u7528\u8bf7\u6c42\u65f6\uff0c\u5168\u91cf\u91c7\u96c6\u6027\u80fd\u6570\u636e\u4e0d\u4ec5\u4f1a\u5bfc\u81f4\u5b58\u50a8\u6210\u672c\u98d9\u5347\uff0c\u8fd8\u53ef\u80fd\u56e0\u8fc7\u5ea6\u6d88\u8017\u8d44\u6e90\u800c\u5f71\u54cd\u4e1a\u52a1\u7a33\u5b9a\u6027\u3002\u5982\u4f55\u5728\u6709\u9650\u7684\u76d1\u63a7\u8d44\u6e90\u4e2d\u7cbe\u51c6\u6355\u6349\u5173\u952e\u95ee\u9898\uff1f\u8fd9\u6b63\u662f\u81ea\u9002\u5e94\u91c7\u6837\uff08Adaptive Sampling\uff09\u6280\u672f\u8981\u89e3\u51b3\u7684\u6838\u5fc3\u547d\u9898\u3002 \u4f5c\u4e3aApache\u9876\u7ea7\u5f00\u6e90\u9879\u76ee\uff0cSkyWalking\u901a\u8fc7\u521b\u65b0\u7684\u81ea\u9002\u5e94\u91c7\u6837\u673a\u5236\uff0c\u5728\u6570\u636e\u91c7\u96c6\u7684\u201c\u7cbe\u51c6\u5ea6\u201d\u4e0e\u201c\u8d44\u6e90\u6d88\u8017\u201d\u4e4b\u95f4\u5b9e\u73b0\u4e86\u52a8\u6001\u5e73\u8861\u3002\u8fd9\u9879\u80fd\u529b\u4f7f\u5176\u5728\u91d1\u878d\u3001\u7535\u5546\u3001\u7269\u8054\u7f51\u7b49\u9ad8\u9891\u8c03\u7528\u573a\u666f\u4e2d\u5c55\u73b0\u51fa\u72ec\u7279\u7684\u76d1\u63a7\u4ef7\u503c\u3002 \u4e00\u3001\u4f20\u7edf\u91c7\u6837\u7b56\u7565\u7684\u56f0\u5883\u4e0e\u7834\u5c40\u70b9 \u65e9\u671f\u76d1\u63a7\u7cfb\u7edf\u5e38\u91c7\u7528\u56fa\u5b9a\u6bd4\u4f8b\u91c7\u6837\uff0c\u4f8b\u5982\u5f3a\u5236\u8bbe\u5b9a1%\u7684\u91c7\u6837\u7387\u3002\u8fd9\u79cd\u65b9\u5f0f\u867d\u7136\u964d\u4f4e\u4e86\u6570\u636e\u91cf\uff0c\u4f46\u5b58\u5728\u4e24\u4e2a\u81f4\u547d\u7f3a\u9677\uff1a \u5173\u952e\u4e8b\u4ef6\u6f0f\u91c7\u98ce\u9669\uff1a\u5f53\u7cfb\u7edf\u7a81\u53d1\u5f02\u5e38\u65f6\uff0c\u4f4e\u91c7\u6837\u7387\u53ef\u80fd\u9519\u8fc7\u8bb0\u5f55\u5173\u952e\u9519\u8bef\u94fe\u8def \u8d44\u6e90\u6d6a\u8d39\uff1a\u5728\u4e1a\u52a1\u4f4e\u5cf0\u671f\u4ecd\u7ef4\u6301\u9ad8\u91c7\u6837\u7387\uff0c\u9020\u6210\u4e0d\u5fc5\u8981\u7684\u8ba1\u7b97\u8d44\u6e90\u6d88\u8017 \u81ea\u9002\u5e94\u91c7\u6837\u7684\u7a81\u7834\u5728\u4e8e\u5f15\u5165\u52a8\u6001\u51b3\u7b56\u673a\u5236\u3002\u901a\u8fc7\u5b9e\u65f6\u5206\u6790\u7cfb\u7edf\u6307\u6807\uff08\u5982QPS\u3001\u9519\u8bef\u7387\u3001\u54cd\u5e94\u65f6\u95f4\uff09\uff0c\u81ea\u52a8\u8c03\u6574\u91c7\u6837\u7b56\u7565\u3002\u4f8b\u5982\uff1a \u5f53\u9519\u8bef\u7387\u8d85\u8fc7\u9608\u503c\u65f6\uff0c\u81ea\u52a8\u63d0\u5347\u76f8\u5173\u670d\u52a1\u7684\u91c7\u6837\u7387\u81f3100% \u5728\u51cc\u6668\u4f4e\u6d41\u91cf\u65f6\u6bb5\uff0c\u5c06\u5e38\u89c4\u91c7\u6837\u7387\u4ece10%\u4e0b\u8c03\u81f32% \u8fd9\u79cd\u667a\u80fd\u5316\u5f39\u6027\u4f38\u7f29\u7279\u6027\uff0c\u4f7f\u5f97SkyWalking\u80fd\u5728\u4e0d\u540c\u4e1a\u52a1\u573a\u666f\u4e2d\u59cb\u7ec8\u4fdd\u6301\u76d1\u63a7\u6548\u80fd\u6700\u5927\u5316\u3002 \u4e8c\u3001SkyWalking\u81ea\u9002\u5e94\u91c7\u6837\u7684\u4e09\u5927\u6280\u672f\u652f\u67f1 1. \u52a8\u6001\u9608\u503c\u9a71\u52a8\u7684\u91c7\u6837\u5f15\u64ce SkyWalking\u7684Sampling Service\u6a21\u5757\u5185\u7f6e\u591a\u7ef4\u5ea6\u6307\u6807\u5206\u6790\u5668\uff0c\u6301\u7eed\u76d1\u6d4b: \u670d\u52a1\u54cd\u5e94\u65f6\u95f4P90\/P99 \u6bcf\u5206\u949f\u8bf7\u6c42\u91cf(RPM) \u9519\u8bef\u7c7b\u578b\u53ca\u5206\u5e03 JVM\u5806\u5185\u5b58\u4f7f\u7528\u7387 \u5f53\u68c0\u6d4b\u5230\u9884\u8bbe\u7684\u9608\u503c\u6761\u4ef6\uff08\u5982\u9519\u8bef\u7387&gt;0.5%\uff09\u65f6\uff0c\u81ea\u52a8\u89e6\u53d1\u91c7\u6837\u7387\u8c03\u6574\u3002\u4f8b\u5982\u67d0\u7535\u5546\u7cfb\u7edf\u5728\u5927\u4fc3\u671f\u95f4\u51fa\u73b0\u652f\u4ed8\u8d85\u65f6\uff0cSampling Service\u53ef\u572810\u79d2\u5185\u5c06\u652f\u4ed8\u670d\u52a1\u7684\u91c7\u6837\u7387\u4ece5%\u63d0\u5347\u81f330%\uff0c\u786e\u4fdd\u5b8c\u6574\u6355\u83b7\u5f02\u5e38\u8c03\u7528\u94fe\u3002 2. \u4e0a\u4e0b\u6587\u611f\u77e5\u7684\u8d1f\u8f7d\u5747\u8861\u7b97\u6cd5 \u4e3a\u907f\u514d\u91c7\u6837\u51b3\u7b56\u5f15\u53d1\u989d\u5916\u6027\u80fd\u635f\u8017\uff0cSkyWalking\u91c7\u7528\u8f7b\u91cf\u5316\u6ed1\u52a8\u7a97\u53e3\u7b97\u6cd5\uff1a \/\/ \u7b80\u5316\u7684\u6ed1\u52a8\u7a97\u53e3\u5b9e\u73b0\u903b\u8f91 public class AdaptiveWindow { private ConcurrentHashMap&lt;String, WindowBucket&gt; metrics; public void evaluate(String serviceId) { WindowBucket bucket = metrics.get(serviceId); if (bucket.errorRate() &gt; config.getThreshold()) { sampler.adjustRate(serviceId, 100%); } else if (bucket.throughput() [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":36145,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"class_list":["post-36144","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-product-news"],"_links":{"self":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/36144","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/comments?post=36144"}],"version-history":[{"count":1,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/36144\/revisions"}],"predecessor-version":[{"id":36146,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/36144\/revisions\/36146"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/media\/36145"}],"wp:attachment":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/media?parent=36144"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/categories?post=36144"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/tags?post=36144"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}