{"id":1671,"date":"2024-05-08T17:32:37","date_gmt":"2024-05-08T09:32:37","guid":{"rendered":"http:\/\/oneai.eu.org\/?p=1671"},"modified":"2024-05-08T17:32:37","modified_gmt":"2024-05-08T09:32:37","slug":"tomcat%e6%80%a7%e8%83%bd%e8%b0%83%e4%bc%98","status":"publish","type":"post","link":"https:\/\/oneai.eu.org\/?p=1671","title":{"rendered":"tomcat\u6027\u80fd\u8c03\u4f18"},"content":{"rendered":"

server.xml\u914d\u7f6e\u6587\u4ef6\uff1a
\nExecutor\u914d\u7f6e \uff1a
\n<Executor
\nname="tomcatThreadPool"
\nnamePrefix="catalina-exec-"
\nmaxThreads="500"
\nminSpareThreads="100"
\nprestartminSpareThreads = "true"
\nmaxQueueSize = "100"<\/p>\n

<\/blockquote>\n

\u91cd\u70b9\u53c2\u6570\u89e3\u91ca\uff1a
\nmaxThreads\uff0c\u6700\u5927\u5e76\u53d1\u6570\uff0c\u9ed8\u8ba4\u8bbe\u7f6e 200\uff0c\u4e00\u822c\u5efa\u8bae\u5728 500 ~ 800\uff0c\u6839\u636e\u786c\u4ef6\u8bbe\u65bd\u548c\u4e1a\u52a1\u6765\u5224\u65ad
\nminSpareThreads\uff0cTomcat \u521d\u59cb\u5316\u65f6\u521b\u5efa\u7684\u7ebf\u7a0b\u6570\uff0c\u9ed8\u8ba4\u8bbe\u7f6e 25
\nprestartminSpareThreads\uff0c\u5728 Tomcat \u521d\u59cb\u5316\u7684\u65f6\u5019\u5c31\u521d\u59cb\u5316 minSpareThreads \u7684\u53c2\u6570\u503c\uff0c\u5982\u679c\u4e0d\u7b49\u4e8e true\uff0cminSpareThreads \u7684\u503c\u5c31\u6ca1\u5565\u6548\u679c\u4e86
\naxQueueSize\uff0c\u6700\u5927\u7684\u7b49\u5f85\u961f\u5217\u6570\uff0c\u8d85\u8fc7\u5219\u62d2\u7edd\u8bf7\u6c42<\/p>\n

--------<Connector\u914d\u7f6e------------ <\/p>\n

<Connector
\nexecutor="tomcatThreadPool"
\nport="8080"
\nprotocol="org.apache.coyote.http11.Http11Nio2Protocol"
\nconnectionTimeout="20000"
\nmaxConnections="10000"
\nredirectPort="8443"
\nenableLookups="false"
\nacceptCount="100"
\nmaxPostSize="10485760"
\ncompression="on"
\ndisableUploadTimeout="true"
\ncompressionMinSize="2048"
\nacceptorThreadCount="2"
\ncompressableMimeType="text\/html,text\/xml,text\/plain,text\/css,text\/javascript,application\/javascript"
\nURIEncoding="utf-8"<\/p>\n

<\/blockquote>\n

\u91cd\u70b9\u53c2\u6570\u89e3\u91ca\uff1a
\nprotocol\uff0cTomcat 8 \u8bbe\u7f6e nio2 \u66f4\u597d\uff1aorg.apache.coyote.http11.Http11Nio2Protocol\uff08\u5982\u679c\u8fd9\u4e2a\u7528\u4e0d\u4e86\uff0c\u5c31\u7528\u4e0b\u9762\u90a3\u4e2a\uff09
\nprotocol\uff0cTomcat 6\u30017 \u8bbe\u7f6e nio \u66f4\u597d\uff1aorg.apache.coyote.http11.Http11NioProtocol
\nenableLookups\uff0c\u7981\u7528DNS\u67e5\u8be2
\nacceptCount\uff0c\u6307\u5b9a\u5f53\u6240\u6709\u53ef\u4ee5\u4f7f\u7528\u7684\u5904\u7406\u8bf7\u6c42\u7684\u7ebf\u7a0b\u6570\u90fd\u88ab\u4f7f\u7528\u65f6\uff0c\u53ef\u4ee5\u653e\u5230\u5904\u7406\u961f\u5217\u4e2d\u7684\u8bf7\u6c42\u6570\uff0c\u8d85\u8fc7\u8fd9\u4e2a\u6570\u7684\u8bf7\u6c42\u5c06\u4e0d\u4e88\u5904\u7406\uff0c\u9ed8\u8ba4\u8bbe\u7f6e 100
\nmaxPostSize\uff0c\u4ee5 FORM URL \u53c2\u6570\u65b9\u5f0f\u7684 POST \u63d0\u4ea4\u65b9\u5f0f\uff0c\u9650\u5236\u63d0\u4ea4\u6700\u5927\u7684\u5927\u5c0f\uff0c\u9ed8\u8ba4\u662f 2097152(2\u5146)\uff0c\u5b83\u4f7f\u7528\u7684\u5355\u4f4d\u662f\u5b57\u8282\u300210485760 \u4e3a 10M\u3002\u5982\u679c\u8981\u7981\u7528\u9650\u5236\uff0c\u5219\u53ef\u4ee5\u8bbe\u7f6e\u4e3a -1\u3002
\nacceptorThreadCount\uff0c\u7528\u4e8e\u63a5\u6536\u8fde\u63a5\u7684\u7ebf\u7a0b\u7684\u6570\u91cf\uff0c\u9ed8\u8ba4\u503c\u662f1\u3002\u4e00\u822c\u8fd9\u4e2a\u6307\u9700\u8981\u6539\u52a8\u7684\u65f6\u5019\u662f\u56e0\u4e3a\u8be5\u670d\u52a1\u5668\u662f\u4e00\u4e2a\u591a\u6838CPU\uff0c\u5982\u679c\u662f\u591a\u6838 CPU \u4e00\u822c\u914d\u7f6e\u4e3a 2.<\/p>\n

axConnections\uff0c\u670d\u52a1\u5668\u5728\u4efb\u4f55\u7ed9\u5b9a\u65f6\u95f4\u5c06\u63a5\u53d7\u548c\u5904\u7406\u7684\u6700\u5927\u8fde\u63a5\u6570\u3002\u5f53\u8fbe\u5230\u8fd9\u4e2a\u6570\u5b57\u65f6\uff0c\u670d\u52a1\u5668\u5c06\u63a5\u53d7\uff0c\u4f46\u4e0d\u5904\u7406\u53e6\u4e00\u4e2a\u8fde\u63a5\u3002\u8fd9\u4e2a\u989d\u5916\u7684\u8fde\u63a5\u5c06\u88ab\u963b\u585e\uff0c\u76f4\u5230\u6b63\u5728\u5904\u7406\u7684\u8fde\u63a5\u6570\u91cf\u4f4e\u4e8emaxConnections\uff0c\u6b64\u65f6\u670d\u52a1\u5668\u5c06\u5f00\u59cb\u63a5\u53d7\u5e76\u518d\u6b21\u5904\u7406\u65b0\u7684\u8fde\u63a5\u3002\u8bf7\u6ce8\u610f\uff0c\u4e00\u65e6\u8fbe\u5230\u9650\u5236\uff0c\u64cd\u4f5c\u7cfb\u7edf\u4ecd\u7136\u53ef\u4ee5\u63a5\u53d7\u57fa\u4e8eacceptCount\u8bbe\u7f6e\u7684\u8fde\u63a5\u3002\u9ed8\u8ba4\u503c\u56e0\u8fde\u63a5\u5668\u7c7b\u578b\u800c\u5f02\u3002\u5bf9\u4e8eBIO\uff0c\u9ed8\u8ba4\u503c\u662fmaxThreads\u7684\u503c\uff0c\u9664\u975e\u4f7f\u7528Executor\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u9ed8\u8ba4\u503c\u5c06\u662f\u6267\u884c\u8005\u7684maxThreads\u7684\u503c\u3002\u5bf9\u4e8eNIO\u548cNIO2\uff0c\u9ed8\u8ba4\u503c\u4e3a10000.\u5bf9\u4e8eAPR\/native\uff0c\u9ed8\u8ba4\u503c\u4e3a8192\u3002\u7b80\u5355\u6765\u8bf4\u5c31\u662fnio\u4f7f\u7528maxConnections\u4ee3\u66ffmaxThreads\u3002<\/p>\n

\n

\u7981\u7528 AJP\uff08\u5982\u679c\u4f60\u670d\u52a1\u5668\u6ca1\u6709\u4f7f\u7528 Apache\uff09
\n\u628a\u4e0b\u9762\u8fd9\u4e00\u884c\u6ce8\u91ca\u6389\uff0c\u9ed8\u8ba4 Tomcat \u662f\u5f00\u542f\u7684\u3002<\/p>\n

<\/p>\n

JVM\u53c2\u6570\u8c03\u4f18\u914d\u7f6e\uff1a<\/h2>\n

-server\uff1a\u8868\u793a\u8fd9\u662f\u5e94\u7528\u4e8e\u670d\u52a1\u5668\u7684\u914d\u7f6e\uff0cJVM \u5185\u90e8\u4f1a\u6709\u7279\u6b8a\u5904\u7406\u7684
\n-Xmx1024m\uff1a\u8bbe\u7f6eJVM\u6700\u5927\u53ef\u7528\u5185\u5b58\u4e3a1024MB \uff08\u53ef\u7528\u5185\u5b58\u768480%\uff09
\n-Xms1024m\uff1a\u8bbe\u7f6eJVM\u6700\u5c0f\u5185\u5b58\u4e3a1024m\u3002\u6b64\u503c\u53ef\u4ee5\u8bbe\u7f6e\u4e0e-Xmx\u76f8\u540c\uff0c\u4ee5\u907f\u514d\u6bcf\u6b21\u5783\u573e\u56de\u6536\u5b8c\u6210\u540eJVM\u91cd\u65b0\u5206\u914d\u5185\u5b58\u3002
\n-XX:NewSize\uff1a128M\u8bbe\u7f6e\u5e74\u8f7b\u4ee3\u5927\u5c0f
\n-XX:MaxNewSize\uff1a256M\u8bbe\u7f6e\u6700\u5927\u7684\u5e74\u8f7b\u4ee3\u5927\u5c0f
\n-XX:PermSize\uff1a256M\u8bbe\u7f6e\u6c38\u4e45\u4ee3\u5927\u5c0f
\n-XX:MaxPermSize\uff1a512M\u8bbe\u7f6e\u6700\u5927\u6c38\u4e45\u4ee3\u5927\u5c0f
\n-XX:NewRatio=2\uff1a\u8bbe\u7f6e\u5e74\u8f7b\u4ee3\uff08\u5305\u62ec Eden \u548c\u4e24\u4e2a Survivor \u533a\uff09\u4e0e\u7ec8\u8eab\u4ee3\u7684\u6bd4\u503c\uff08\u9664\u53bb\u6c38\u4e45\u4ee3\uff09\u3002\u8bbe\u7f6e\u4e3a 2\uff0c\u5219\u5e74\u8f7b\u4ee3\u4e0e\u7ec8\u8eab\u4ee3\u6240\u5360\u6bd4\u503c\u4e3a 1\uff1a2\uff0c\u5e74\u8f7b\u4ee3\u5360\u6574\u4e2a\u5806\u6808\u7684 1\/4
\n-XX:MaxTenuringThreshold=10\uff1a\u8bbe\u7f6e\u5783\u573e\u6700\u5927\u5e74\u9f84\uff0c\u9ed8\u8ba4\u4e3a\uff1a15\u3002\u5982\u679c\u8bbe\u7f6e\u4e3a 0 \u7684\u8bdd\uff0c\u5219\u5e74\u8f7b\u4ee3\u5bf9\u8c61\u4e0d\u7ecf\u8fc7 Survivor \u533a\uff0c\u76f4\u63a5\u8fdb\u5165\u5e74\u8001\u4ee3\u3002\u5bf9\u4e8e\u5e74\u8001\u4ee3\u6bd4\u8f83\u591a\u7684\u5e94\u7528\uff0c\u53ef\u4ee5\u63d0\u9ad8\u6548\u7387\u3002\u5982\u679c\u5c06\u6b64\u503c\u8bbe\u7f6e\u4e3a\u4e00\u4e2a\u8f83\u5927\u503c\uff0c\u5219\u5e74\u8f7b\u4ee3\u5bf9\u8c61\u4f1a\u5728 Survivor \u533a\u8fdb\u884c\u591a\u6b21\u590d\u5236\uff0c\u8fd9\u6837\u53ef\u4ee5\u589e\u52a0\u5bf9\u8c61\u518d\u5e74\u8f7b\u4ee3\u7684\u5b58\u6d3b\u65f6\u95f4\uff0c\u589e\u52a0\u5728\u5e74\u8f7b\u4ee3\u5373\u88ab\u56de\u6536\u7684\u6982\u8bba\u3002
\nXX:+DisableExplicitGC\uff1a\u8fd9\u4e2a\u5c06\u4f1a\u5ffd\u7565\u624b\u52a8\u8c03\u7528 GC \u7684\u4ee3\u7801\u4f7f\u5f97 System.gc() \u7684\u8c03\u7528\u5c31\u4f1a\u53d8\u6210\u4e00\u4e2a\u7a7a\u8c03\u7528\uff0c\u5b8c\u5168\u4e0d\u4f1a\u89e6\u53d1\u4efb\u4f55 GC<\/p>\n

\n","protected":false},"excerpt":{"rendered":"

server.xml\u914d\u7f6e\u6587\u4ef6\uff1a Executor\u914d\u7f6e \uff1a <Executor name="tomcatThreadPool" namePrefix="catalina-exec-" maxThreads="500" minSpareThreads="100" prestartminSpareThreads = "true" maxQueueSize = "100" \u91cd\u70b9\u53c2\u6570\u89e3\u91ca\uff1a maxThreads\uff0c\u6700\u5927\u5e76\u53d1\u6570\uff0c\u9ed8\u8ba4\u8bbe\u7f6e 200\uff0c\u4e00\u822c\u5efa\u8bae\u5728 500 ~ 800\uff0c\u6839\u636e\u786c\u4ef6\u8bbe\u65bd\u548c\u4e1a\u52a1\u6765\u5224\u65ad minSpareThreads\uff0cTomcat \u521d\u59cb\u5316\u65f6\u521b\u5efa\u7684\u7ebf\u7a0b\u6570\uff0c\u9ed8\u8ba4\u8bbe\u7f6e 25 prestartminSpareThreads\uff0c\u5728 Tomcat \u521d\u59cb\u5316\u7684\u65f6\u5019\u5c31\u521d\u59cb\u5316 minSpareThreads \u7684\u53c2\u6570\u503c\uff0c\u5982\u679c\u4e0d\u7b49\u4e8e true\uff0cminSpareThreads \u7684\u503c\u5c31\u6ca1\u5565\u6548\u679c\u4e86 axQueueSize\uff0c\u6700\u5927\u7684\u7b49\u5f85\u961f\u5217\u6570\uff0c\u8d85\u8fc7\u5219\u62d2\u7edd\u8bf7\u6c42 ——–<Connector\u914d\u7f6e———— <Connector executor="tomcatThreadPool" port="8080" protocol="org.apache.coyote.http11.Http11Nio2Protocol" connectionTimeout="20000" maxConnections="10000" redirectPort="8443" enableLookups="false" acceptCount="100" maxPostSize="10485760" compression="on" disableUploadTimeout="true" compressionMinSize="2048" acceptorThreadCount="2" compressableMimeType="text\/html,text\/xml,text\/plain,text\/css,text\/javascript,application\/javascript" URIEncoding="utf-8" \u91cd\u70b9\u53c2\u6570\u89e3\u91ca\uff1a protocol\uff0cTomcat 8 \u8bbe\u7f6e nio2 \u66f4\u597d\uff1aorg.apache.coyote.http11.Http11Nio2Protocol\uff08\u5982\u679c\u8fd9\u4e2a\u7528\u4e0d\u4e86\uff0c\u5c31\u7528\u4e0b\u9762\u90a3\u4e2a\uff09 protocol\uff0cTomcat 6\u30017 \u8bbe\u7f6e nio \u66f4\u597d\uff1aorg.apache.coyote.http11.Http11NioProtocol enableLookups\uff0c\u7981\u7528DNS\u67e5\u8be2 acceptCount\uff0c\u6307\u5b9a\u5f53\u6240\u6709\u53ef\u4ee5\u4f7f\u7528\u7684\u5904\u7406\u8bf7\u6c42\u7684\u7ebf\u7a0b\u6570\u90fd\u88ab\u4f7f\u7528\u65f6\uff0c\u53ef\u4ee5\u653e\u5230\u5904\u7406\u961f\u5217\u4e2d\u7684\u8bf7\u6c42\u6570\uff0c\u8d85\u8fc7\u8fd9\u4e2a\u6570\u7684\u8bf7\u6c42\u5c06\u4e0d\u4e88\u5904\u7406\uff0c\u9ed8\u8ba4\u8bbe\u7f6e 100 maxPostSize\uff0c\u4ee5 FORM URL \u53c2\u6570\u65b9\u5f0f\u7684 POST \u63d0\u4ea4\u65b9\u5f0f\uff0c\u9650\u5236\u63d0\u4ea4\u6700\u5927\u7684\u5927\u5c0f\uff0c\u9ed8\u8ba4\u662f 2097152(2\u5146)\uff0c\u5b83\u4f7f\u7528\u7684\u5355\u4f4d\u662f\u5b57\u8282\u300210485760 \u4e3a 10M\u3002\u5982\u679c\u8981\u7981\u7528\u9650\u5236\uff0c\u5219\u53ef\u4ee5\u8bbe\u7f6e\u4e3a -1\u3002 acceptorThreadCount\uff0c\u7528\u4e8e\u63a5\u6536\u8fde\u63a5\u7684\u7ebf\u7a0b\u7684\u6570\u91cf\uff0c\u9ed8\u8ba4\u503c\u662f1\u3002\u4e00\u822c\u8fd9\u4e2a\u6307\u9700\u8981\u6539\u52a8\u7684\u65f6\u5019\u662f\u56e0\u4e3a\u8be5\u670d\u52a1\u5668\u662f\u4e00\u4e2a\u591a\u6838CPU\uff0c\u5982\u679c\u662f\u591a\u6838 CPU \u4e00\u822c\u914d\u7f6e\u4e3a 2. 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