{"id":1228,"date":"2019-03-23T02:39:39","date_gmt":"2019-03-23T02:39:39","guid":{"rendered":"http:\/\/www.ipcpu.com\/?p=1228"},"modified":"2019-11-11T08:02:26","modified_gmt":"2019-11-11T08:02:26","slug":"java-in-docker-and-kubernetes","status":"publish","type":"post","link":"https:\/\/c.ipcpu.com\/2019\/03\/java-in-docker-and-kubernetes\/","title":{"rendered":"Java in Docker and Kubernetes"},"content":{"rendered":"<p>\u8fd0\u884c\u5728Docker\u6216\u8005Kubernetes\u4e2d\u7684JAVA\u7a0b\u5e8f\u5982\u4f55\u6b63\u786e\u83b7\u53d6CPU\u548c\u5185\u5b58\u7684\u9650\u5236<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-1230\" src=\"\/\/www.ipcpu.com\/wp-content\/uploads\/2019\/06\/2019-06-07_103903.jpg\" alt=\"\" width=\"350\" height=\"157\" srcset=\"https:\/\/c.ipcpu.com\/wp-content\/uploads\/2019\/06\/2019-06-07_103903.jpg 350w, https:\/\/c.ipcpu.com\/wp-content\/uploads\/2019\/06\/2019-06-07_103903-300x135.jpg 300w\" sizes=\"(max-width: 350px) 100vw, 350px\" \/><\/p>\n<h2 id=\"\u96f6\u3001\u6982\u8ff0\">\u96f6\u3001\u6982\u8ff0<\/h2>\n<p>Docker\u5bb9\u5668\u5229\u7528CGroup\u5bf9\u8fdb\u7a0b\u4f7f\u7528\u7684\u8d44\u6e90\u8fdb\u884c\u9650\u5236\uff0c\u800c\u5728\u5bb9\u5668\u4e2d\u7684JVM\u4f9d\u7136\u4f1a\u5229\u7528\u5bbf\u4e3b\u673a\u73af\u5883\u7684\u5185\u5b58\u5927\u5c0f\u548cCPU\u6838\u6570\u8fdb\u884c\u7f3a\u7701\u8bbe\u7f6e\uff0c\u8fd9\u5bfc\u81f4\u4e86JVM Heap\u7684\u9519\u8bef\u8ba1\u7b97\u3002JVM\u7f3a\u7701\u7684GC\u3001JIT\u7f16\u8bd1\u7ebf\u7a0b\u6570\u91cf\u53d6\u51b3\u4e8e\u5bbf\u4e3b\u673aCPU\u6838\u6570\u3002\u5982\u679c\u6211\u4eec\u5728\u4e00\u4e2a\u8282\u70b9\u4e0a\u8fd0\u884c\u591a\u4e2aJava\u5e94\u7528\uff0c\u5373\u4f7f\u6211\u4eec\u8bbe\u7f6e\u4e86CPU\u7684\u9650\u5236\uff0c\u5e94\u7528\u4e4b\u95f4\u4f9d\u7136\u6709\u53ef\u80fd\u56e0\u4e3aGC\u7ebf\u7a0b\u62a2\u5360\u5207\u6362\uff0c\u5bfc\u81f4\u5e94\u7528\u6027\u80fd\u53d7\u5230\u5f71\u54cd\u3002<\/p>\n<p>\u90a3\u4e48\u6211\u4eec\u6765\u770b\u4e0b\u5404\u4e2a\u7248\u672cJDK\u5982\u4f55\u4f7f\u7528docker\u7684\u9650\u5236\u3002<\/p>\n<h3 id=\"\u4e00\u3001JDK\u8001\u7248\u672c\">\u4e00\u3001JDK\u8001\u7248\u672c<\/h3>\n<p>1\u3001\u4f7f\u7528\u73af\u5883\u53d8\u91cf\uff0c\u76f4\u63a5\u6307\u5b9aJVM\u5806\u5927\u5c0f -e JAVA_OPTIONS='xMX300m'<br \/>\n2\u3001\u660e\u786eGC\u548cJIT\u5e76\u884c\u7ebf\u7a0b\u6570\u76ee\uff0c\u4ee5\u907f\u514d\u4e8c\u8005\u5360\u7528\u8fc7\u591a\u8d44\u6e90\u3002<\/p>\n<div>\n<pre><code>-XX:ParallelGCTreads\r\n-XX:CICompilerCount<\/code><\/pre>\n<\/div>\n<p>\u6ce8\u610fParallelGCThreads\u7684\u8ba1\u7b97\u65b9\u6cd5\uff1a<\/p>\n<div>\n<pre><code>ParallelGCThreads = (ncpus &lt;= 8) ? ncpus : (8 + ((ncpus - 8) * 5) \/ 8);\r\n#cpu\u6838\u6570\u5c0f\u4e8e\u7b49\u4e8e8\uff0c\u53d6\u6838\u6570\uff1bcpu\u6838\u6570\u5927\u4e8e8\u6309\u540e\u9762\u516c\u5f0f\u8ba1\u7b97<\/code><\/pre>\n<\/div>\n<h3 id=\"\u4e8c\u3001JDK8u131+backported\">\u4e8c\u3001 JDK 8u131+(backported)<\/h3>\n<p>\u4f7f\u7528\u4ee5\u4e0bJVM\u53c2\u6570\uff0c\u9002\u914ddocker\u5bb9\u5668\u7684\u5185\u5b58\uff0cCPU\u53ef\u80fd\u65e0\u6cd5\u83b7\u53d6\u9650\u5236\uff0c\u9700\u8981\u624b\u52a8\u8bbe\u7f6e<\/p>\n<div>\n<pre><code>-XX:+UnlockExperimentalVMOptions \r\n-XX:+UseCGroupMemoryLimitForHeap<\/code><\/pre>\n<\/div>\n<h3 id=\"\u4e09\u3001JDK8u191+backported\">\u4e09\u3001 JDK 8u191+(backported)<\/h3>\n<p>\u9ed8\u8ba4\u5f00\u542f\u4e86UseContainerSupport\uff0c\u652f\u6301\u5bb9\u5668\u5185\u90e8\u83b7\u53d6CPU\u548c\u5185\u5b58\u9650\u5236\u3002<\/p>\n<div>\n<pre><code>-XX:UseContainerSupport<\/code><\/pre>\n<\/div>\n<p>\u5e76\u589e\u52a0\u4e86ActiveProcessorCount\u53c2\u6570\u6307\u5b9aCPU\u6570\u91cf<\/p>\n<div>\n<pre><code>-XX:ActiveProcessorCount=count\r\n<\/code><\/pre>\n<\/div>\n<h3 id=\"\u56db\u3001JDK9\u3001JDK10\">\u56db\u3001 JDK9 \u3001JDK10<\/h3>\n<p>\u4e0d\u662fLTS(\u957f\u671f\u652f\u6301)\u7248\u672c<\/p>\n<h3 id=\"\u4e94\u3001JDK11+\">\u4e94\u3001 JDK11+<\/h3>\n<p>\u9ed8\u8ba4\u5f00\u542f\u4e86UseContainerSupport\uff0c\u652f\u6301\u5bb9\u5668\u5185\u90e8\u83b7\u53d6CPU\u548c\u5185\u5b58\u9650\u5236\u3002<\/p>\n<div>\n<pre><code>-XX:UseContainerSupport<\/code><\/pre>\n<\/div>\n<p>\u5e76\u589e\u52a0\u4e86ActiveProcessorCount\u53c2\u6570\u6307\u5b9aCPU\u6570\u91cf<\/p>\n<div>\n<pre><code>-XX:ActiveProcessorCount=count\r\n<\/code><\/pre>\n<\/div>\n<h2 id=\"\u53c2\u8003\u8d44\u6599\">\u53c2\u8003\u8d44\u6599<\/h2>\n<p><a href=\"https:\/\/www.jishuwen.com\/d\/2K0J#tuit\">https:\/\/www.jishuwen.com\/d\/2K0J#tuit<\/a><br \/>\n<a href=\"https:\/\/segmentfault.com\/a\/1190000013945253\">https:\/\/segmentfault.com\/a\/1190000013945253<\/a><br \/>\n<a href=\"https:\/\/royvanrijn.com\/blog\/2018\/05\/java-and-docker-memory-limits\/\">https:\/\/royvanrijn.com\/blog\/2018\/05\/java-and-docker-memory-limits\/<\/a><br \/>\n<a href=\"https:\/\/bufferings.hatenablog.com\/entry\/2018\/11\/11\/114534\">https:\/\/bufferings.hatenablog.com\/entry\/2018\/11\/11\/114534<\/a><br \/>\n<a href=\"https:\/\/www.oracle.com\/technetwork\/java\/javase\/8u191-relnotes-5032181.html#JDK-8146115\">https:\/\/www.oracle.com\/technetwork\/java\/javase\/8u191-relnotes-5032181.html#JDK-8146115<\/a><\/p>\n<p>&nbsp;<\/p>\n<div id=\"wiz-table-col-line\" style=\"display: none;\"><\/div>\n<div id=\"wiz-table-row-line\" style=\"display: none;\"><\/div>\n<div id=\"wiz-table-range-border_start\" style=\"display: none;\">\n<div id=\"wiz-table-range-border_start_top\"><\/div>\n<div id=\"wiz-table-range-border_start_right\"><\/div>\n<div id=\"wiz-table-range-border_start_bottom\"><\/div>\n<div id=\"wiz-table-range-border_start_left\"><\/div>\n<div id=\"wiz-table-range-border_start_dot\"><\/div>\n<\/div>\n<div id=\"wiz-table-range-border_range\" style=\"display: none;\">\n<div id=\"wiz-table-range-border_range_top\"><\/div>\n<div id=\"wiz-table-range-border_range_right\"><\/div>\n<div id=\"wiz-table-range-border_range_bottom\"><\/div>\n<div id=\"wiz-table-range-border_range_left\"><\/div>\n<div id=\"wiz-table-range-border_range_dot\"><\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<p>\u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff1a<a href=\"https:\/\/c.ipcpu.com\">IPCPU-\u7f51\u7edc\u4e4b\u8def<\/a> &raquo; <a href=\"https:\/\/c.ipcpu.com\/2019\/03\/java-in-docker-and-kubernetes\/\">Java in Docker and Kubernetes<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>\u8fd0\u884c\u5728Docker\u6216\u8005Kubernetes\u4e2d\u7684JAVA\u7a0b\u5e8f\u5982\u4f55\u6b63\u786e\u83b7\u53d6CPU\u548c\u5185\u5b58\u7684\u9650\u5236 \u96f6\u3001\u6982\u8ff0 Docker\u5bb9\u5668\u5229\u7528CGroup\u5bf9\u8fdb\u7a0b\u4f7f\u7528\u7684\u8d44\u6e90\u8fdb\u884c\u9650\u5236\uff0c\u800c\u5728\u5bb9\u5668\u4e2d\u7684JVM\u4f9d\u7136\u4f1a\u5229\u7528\u5bbf\u4e3b\u673a\u73af\u5883\u7684\u5185\u5b58\u5927\u5c0f\u548cCPU\u6838\u6570\u8fdb\u884c\u7f3a\u7701\u8bbe\u7f6e\uff0c\u8fd9\u5bfc\u81f4\u4e86JVM Heap\u7684\u9519\u8bef\u8ba1\u7b97\u3002JVM\u7f3a\u7701\u7684GC\u3001JIT\u7f16\u8bd1\u7ebf\u7a0b\u6570\u91cf\u53d6\u51b3\u4e8e\u5bbf\u4e3b\u673aCPU\u6838\u6570\u3002\u5982\u679c\u6211\u4eec\u5728\u4e00\u4e2a\u8282\u70b9\u4e0a\u8fd0\u884c\u591a\u4e2aJava\u5e94\u7528\uff0c\u5373\u4f7f\u6211\u4eec\u8bbe\u7f6e\u4e86CPU\u7684\u9650\u5236\uff0c\u5e94\u7528\u4e4b\u95f4\u4f9d\u7136\u6709\u53ef\u80fd\u56e0\u4e3aGC\u7ebf\u7a0b\u62a2\u5360\u5207\u6362\uff0c\u5bfc\u81f4\u5e94\u7528\u6027\u80fd\u53d7\u5230\u5f71\u54cd\u3002 \u90a3\u4e48\u6211\u4eec\u6765\u770b\u4e0b\u5404\u4e2a\u7248\u672cJDK\u5982\u4f55\u4f7f\u7528docker\u7684\u9650\u5236\u3002 \u4e00\u3001JDK\u8001\u7248\u672c 1\u3001\u4f7f\u7528\u73af\u5883\u53d8\u91cf\uff0c\u76f4\u63a5\u6307\u5b9aJVM\u5806\u5927\u5c0f -e JAVA_OPTIONS=&#8217;xMX300m&#8217; 2\u3001\u660e\u786eGC\u548cJIT\u5e76\u884c\u7ebf\u7a0b\u6570\u76ee\uff0c\u4ee5\u907f\u514d\u4e8c\u8005\u5360\u7528\u8fc7\u591a\u8d44\u6e90\u3002 -XX:ParallelGCTreads -XX:CICompilerCount \u6ce8\u610fParallelGCThreads\u7684\u8ba1\u7b97\u65b9\u6cd5\uff1a ParallelGCThreads = (ncpus &lt;= 8) ? ncpus : (8 + ((ncpus &#8211; 8) * 5) \/ 8); #cpu\u6838\u6570\u5c0f\u4e8e\u7b49\u4e8e8\uff0c\u53d6\u6838\u6570\uff1bcpu\u6838\u6570\u5927\u4e8e8\u6309\u540e\u9762\u516c\u5f0f\u8ba1\u7b97 \u4e8c\u3001 JDK 8u131+(backported) \u4f7f\u7528\u4ee5\u4e0bJVM\u53c2\u6570\uff0c\u9002\u914ddocker\u5bb9\u5668\u7684\u5185\u5b58\uff0cCPU\u53ef\u80fd\u65e0\u6cd5\u83b7\u53d6\u9650\u5236\uff0c\u9700\u8981\u624b\u52a8\u8bbe\u7f6e -XX:+UnlockExperimentalVMOptions -XX:+UseCGroupMemoryLimitForHeap \u4e09\u3001 JDK 8u191+(backported) \u9ed8\u8ba4\u5f00\u542f\u4e86UseContainerSupport\uff0c\u652f\u6301\u5bb9\u5668\u5185\u90e8\u83b7\u53d6CPU\u548c\u5185\u5b58\u9650\u5236\u3002 -XX:UseContainerSupport \u5e76\u589e\u52a0\u4e86ActiveProcessorCount\u53c2\u6570\u6307\u5b9aCPU\u6570\u91cf -XX:ActiveProcessorCount=count \u56db\u3001 JDK9 \u3001JDK10 \u4e0d\u662fLTS(\u957f\u671f\u652f\u6301)\u7248\u672c \u4e94\u3001 JDK11+ \u9ed8\u8ba4\u5f00\u542f\u4e86UseContainerSupport\uff0c\u652f\u6301\u5bb9\u5668\u5185\u90e8\u83b7\u53d6CPU\u548c\u5185\u5b58\u9650\u5236\u3002 -XX:UseContainerSupport \u5e76\u589e\u52a0\u4e86ActiveProcessorCount\u53c2\u6570\u6307\u5b9aCPU\u6570\u91cf -XX:ActiveProcessorCount=count \u53c2\u8003\u8d44\u6599 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[13],"tags":[68,196,129],"_links":{"self":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts\/1228"}],"collection":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/comments?post=1228"}],"version-history":[{"count":3,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts\/1228\/revisions"}],"predecessor-version":[{"id":1262,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts\/1228\/revisions\/1262"}],"wp:attachment":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/media?parent=1228"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/categories?post=1228"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/tags?post=1228"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}