{"id":1203,"date":"2019-04-08T11:20:18","date_gmt":"2019-04-08T03:20:18","guid":{"rendered":"https:\/\/blog.jsjs.org\/?p=1203"},"modified":"2019-04-08T11:20:18","modified_gmt":"2019-04-08T03:20:18","slug":"tomcat%e7%9a%84%e9%85%8d%e7%bd%ae%e5%92%8c%e4%bc%98%e5%8c%96","status":"publish","type":"post","link":"https:\/\/blog.jsjs.org\/?p=1203","title":{"rendered":"tomcat\u7684\u914d\u7f6e\u548c\u4f18\u5316"},"content":{"rendered":"

\u8f6c\u81ea\uff1ahttp:\/\/www.sysopen.cn\/20165012\/<\/strong><\/p>\n

\u4f5c\u8005\uff1ayangc<\/strong><\/p><\/blockquote>\n

tomcat\u7684\u5185\u5b58\u4f7f\u7528\u914d\u7f6e\uff0c\u6700\u5927\u8fde\u63a5\u6570\u914d\u7f6e\u3002<\/p>\n

\u5982\u4f55\u4fee\u6539\u914d\u7f6e\u5462\uff0c\u5728\/tomcat\u7684\/bin\/\u4e0b\u9762\u6709\u4e2a\u811a\u672c\u6587\u4ef6catailna.sh\u3002 \u5982\u679c windows \u662fbat\u8bbe\u7f6etomcat\u7684\u4f7f\u7528\u5185\u5b58\uff0c\u5176\u5b9e\u5c31\u662f\u8bbe\u7f6ejvm\u7684\u4f7f\u7528\u53c2\u6570\u3002<\/p>\n
\u4e00.Tomcat\u5185\u5b58\u4f18\u5316<\/strong><\/h5>\n

Tomcat\u5185\u5b58\u4f18\u5316\u4e3b\u8981\u662f\u5bf9 tomcat \u542f\u52a8\u53c2\u6570\u4f18\u5316\uff0c\u6211\u4eec\u53ef\u4ee5\u5728 tomcat \u7684\u542f\u52a8\u811a\u672c catalina.sh \u4e2d\u8bbe\u7f6e JAVA_OPTS \u53c2\u6570\u3002<\/p>\n

1.JAVA_OPTS\u53c2\u6570\u8bf4\u660e<\/strong><\/p>\n

Java\u4ee3\u7801<\/p>\n

 -server \u00a0\u542f\u7528jdk \u7684 server \u7248\uff1b\n -Xms \u00a0 \u00a0 \u00a0java\u865a\u62df\u673a\u521d\u59cb\u5316\u65f6\u7684\u6700\u5c0f\u5185\u5b58\uff1b\n -Xmx \u00a0 \u00a0 \u00a0java\u865a\u62df\u673a\u53ef\u4f7f\u7528\u7684\u6700\u5927\u5185\u5b58\uff1b\n -XX:PermSize \u00a0 \u00a0\u5185\u5b58\u6c38\u4e45\u4fdd\u7559\u533a\u57df\n -XX:MaxPermSize \u00a0 \u5185\u5b58\u6700\u5927\u6c38\u4e45\u4fdd\u7559\u533a\u57df<\/code><\/pre>\n
\u8bbe\u7f6eTomcat\u542f\u52a8\u7684\u521d\u59cb\u5185\u5b58\uff0c\u5176\u521d\u59cb\u7a7a\u95f4(\u5373-Xms)\u662f\u7269\u7406\u5185\u5b58\u76841\/64\uff0c\u6700\u5927\u7a7a\u95f4(-Xmx)\u662f\u7269\u7406\u5185\u5b58\u76841\/4\u3002\u53ef\u4ee5\u5229\u7528JVM\u63d0\u4f9b\u7684-Xmn -Xms -Xmx\u7b49\u9009\u9879\uff0c\u8981\u52a0\u201cm\u201d\u8bf4\u660e\u662fMB\uff0c\u5426\u5219\u5c31\u662fKB\u4e86\uff0c\u5728\u542f\u52a8tomcat\u65f6\u4f1a\u62a5\u5185\u5b58\u4e0d\u8db3\u3002<\/p>\n
 -Xms\uff1a\u521d\u59cb\u503c \u00a0\u3010\u521d\u59cb\u5316\u5185\u5b58\u5927\u5c0f\u3011\n -Xmx\uff1a\u6700\u5927\u503c \u00a0\u3010\u53ef\u4ee5\u4f7f\u7528\u7684\u6700\u5927\u5185\u5b58\u3011\n -Xmn\uff1a\u6700\u5c0f\u503c\n JVM\u5806\u7684\u8bbe\u7f6e\u662f\u6307java\u7a0b\u5e8f\u8fd0\u884c\u8fc7\u7a0b\u4e2dJVM\u53ef\u4ee5\u8c03\u914d\u4f7f\u7528\u7684\u5185\u5b58\u7a7a\u95f4\u7684\u8bbe\u7f6e.JVM\u5728\u542f\u52a8\u7684\u65f6\u5019\u4f1a\u81ea\u52a8\u8bbe\u7f6eHeap size\u7684\u503c\uff0c\u5176\u521d\u59cb\u7a7a\u95f4(\u5373-Xms)\u662f\u7269\u7406\u5185\u5b58\u76841\/64\uff0c\u6700\u5927\u7a7a\u95f4(-Xmx)\u662f\u7269\u7406\u5185\u5b58\u76841\/4\u3002\u53ef\u4ee5\u5229\u7528JVM\u63d0\u4f9b\u7684-Xmn -Xms -Xmx\u7b49\u9009\u9879\u53ef\u8fdb\u884c\u8bbe\u7f6e\u3002Heap size \u7684\u5927\u5c0f\u662fYoung Generation \u548cTenured Generaion \u4e4b\u548c\u3002\n<\/code><\/pre>\n
\u63d0\u793a\uff1a\u5728JVM\u4e2d\u5982\u679c98\uff05\u7684\u65f6\u95f4\u662f\u7528\u4e8eGC\u4e14\u53ef\u7528\u7684Heap size \u4e0d\u8db32\uff05\u7684\u65f6\u5019\u5c06\u629b\u51fa\u6b64\u5f02\u5e38\u4fe1\u606f\u3002<\/p>\n
\u63d0\u793a\uff1aHeap Size \u6700\u5927\u4e0d\u8981\u8d85\u8fc7\u53ef\u7528\u7269\u7406\u5185\u5b58\u768480\uff05\uff0c\u4e00\u822c\u7684\u8981\u5c06-Xms\u548c-Xmx\u9009\u9879\u8bbe\u7f6e\u4e3a\u76f8\u540c\uff0c\u800c-Xmn\u4e3a1\/4\u7684-Xmx\u503c\u3002 \u8fd9\u4e24\u4e2a\u503c\u7684\u5927\u5c0f\u4e00\u822c\u6839\u636e\u9700\u8981\u8fdb\u884c\u8bbe\u7f6e\u3002\u521d\u59cb\u5316\u5806\u7684\u5927\u5c0f\u6267\u884c\u4e86\u865a\u62df\u673a\u5728\u542f\u52a8\u65f6\u5411\u7cfb\u7edf\u7533\u8bf7\u7684\u5185\u5b58\u7684\u5927\u5c0f\u3002\u4e00\u822c\u800c\u8a00\uff0c\u8fd9\u4e2a\u53c2\u6570\u4e0d\u91cd\u8981\u3002\u4f46\u662f\u6709\u7684\u5e94\u7528 \u7a0b\u5e8f\u5728\u5927\u8d1f\u8f7d\u7684\u60c5\u51b5\u4e0b\u4f1a\u6025\u5267\u5730\u5360\u7528\u66f4\u591a\u7684\u5185\u5b58\uff0c\u6b64\u65f6\u8fd9\u4e2a\u53c2\u6570\u5c31\u662f\u663e\u5f97\u975e\u5e38\u91cd\u8981\uff0c\u5982\u679c\u865a\u62df\u673a\u542f\u52a8\u65f6\u8bbe\u7f6e\u4f7f\u7528\u7684\u5185\u5b58\u6bd4\u8f83\u5c0f\u800c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u6709\u8bb8\u591a\u5bf9\u8c61\u8fdb\u884c\u521d\u59cb \u5316\uff0c\u865a\u62df\u673a\u5c31\u5fc5\u987b\u91cd\u590d\u5730\u589e\u52a0\u5185\u5b58\u6765\u6ee1\u8db3\u4f7f\u7528\u3002\u7531\u4e8e\u8fd9\u79cd\u539f\u56e0\uff0c\u6211\u4eec\u4e00\u822c\u628a-Xms\u548c-Xmx\u8bbe\u4e3a\u4e00\u6837\u5927\uff0c\u800c\u5806\u7684\u6700\u5927\u503c\u53d7\u9650\u4e8e\u7cfb\u7edf\u4f7f\u7528\u7684\u7269\u7406\u5185\u5b58\u3002\u4e00\u822c\u4f7f\u7528\u6570 \u636e\u91cf\u8f83\u5927\u7684\u5e94\u7528\u7a0b\u5e8f\u4f1a\u4f7f\u7528\u6301\u4e45\u5bf9\u8c61\uff0c\u5185\u5b58\u4f7f\u7528\u6709\u53ef\u80fd\u8fc5\u901f\u5730\u589e\u957f\u3002\u5f53\u5e94\u7528\u7a0b\u5e8f\u9700\u8981\u7684\u5185\u5b58\u8d85\u51fa\u5806\u7684\u6700\u5927\u503c\u65f6\u865a\u62df\u673a\u5c31\u4f1a\u63d0\u793a\u5185\u5b58\u6ea2\u51fa\uff0c\u5e76\u4e14\u5bfc\u81f4\u5e94\u7528\u670d\u52a1\u5d29\u6e83\u3002\u56e0 \u6b64\u4e00\u822c\u5efa\u8bae\u5806\u7684\u6700\u5927\u503c\u8bbe\u7f6e\u4e3a\u53ef\u7528\u5185\u5b58\u7684\u6700\u5927\u503c\u768480%\u3002<\/p>\n
    \n
  • \u5982\u679c\u7cfb\u7edf\u82b1\u8d39\u5f88\u591a\u7684\u65f6\u95f4\u6536\u96c6\u5783\u573e\uff0c\u8bf7\u51cf\u5c0f\u5806\u5927\u5c0f\u3002\u4e00\u6b21\u5b8c\u5168\u7684\u5783\u573e\u6536\u96c6\u5e94\u8be5\u4e0d\u8d85\u8fc7 3-5 \u79d2\u3002\u5982\u679c\u5783\u573e\u6536\u96c6\u6210\u4e3a\u74f6\u9888\uff0c\u90a3\u4e48\u9700\u8981\u6307\u5b9a\u4ee3\u7684\u5927\u5c0f\uff0c\u68c0\u67e5\u5783\u573e\u6536\u96c6\u7684\u8be6\u7ec6\u8f93\u51fa\uff0c\u7814\u7a76 \u5783\u573e\u6536\u96c6\u53c2\u6570\u5bf9\u6027\u80fd\u7684\u5f71\u54cd\u3002\u4e00\u822c\u8bf4\u6765\uff0c\u4f60\u5e94\u8be5\u4f7f\u7528\u7269\u7406\u5185\u5b58\u7684 80% \u4f5c\u4e3a\u5806\u5927\u5c0f\u3002\u5f53\u589e\u52a0\u5904\u7406\u5668\u65f6\uff0c\u8bb0\u5f97\u589e\u52a0\u5185\u5b58\uff0c\u56e0\u4e3a\u5206\u914d\u53ef\u4ee5\u5e76\u884c\u8fdb\u884c\uff0c\u800c\u5783\u573e\u6536\u96c6\u4e0d\u662f\u5e76\u884c\u7684\u3002<\/li>\n
  • \u5728\u91cd\u542f\u4f60\u7684Tomcat\u670d\u52a1\u5668\u4e4b\u540e\uff0c\u8fd9\u4e9b\u914d\u7f6e\u7684\u66f4\u6539\u624d\u4f1a\u6709\u6548\u3002<\/li>\n<\/ul>\n
    Windows\u5728\u6587\u4ef6{tomcathome}\/bin\/catalina.bat\uff0cUnix\u5728\u6587\u4ef6{tomcathome}\/bin\/catalina.sh\u7684\u524d\u9762\uff0c\u589e\u52a0\u5982\u4e0b\u8bbe\u7f6e\uff1a<\/p>\n
    \u670d\u52a1\u5668\u53c2\u6570\u914d\u7f6e<\/h6>\n
    tomcat\u9ed8\u8ba4\uff1a -Xms1024m -Xmx1024m -Xss1024K -XX:PermSize=128m -XX:MaxPermSize=256m<\/code><\/pre>\n
    Java_OPTS\u53c2\u6570<\/p>\n
    JAVA_OPTS=\"-Djava.awt.headless=true -Dfile.encoding=UTF-8\n-server -Xms2048m -Xmx2048m\n-XX:NewSize=512m -XX:MaxNewSize=512m -XX:PermSize=512m\n-XX:MaxPermSize=512m -XX:+DisableExplicitGC\"<\/code><\/pre>\n
    \u914d\u7f6e\u5b8c\u6210\u540e\u53ef\u91cd\u542fTomcat \uff0c\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u8fdb\u884c\u67e5\u770b\u914d\u7f6e\u662f\u5426\u751f\u6548\uff1a<\/p>\n
    1.\u9996\u5148\u67e5\u770bTomcat \u8fdb\u7a0b\u53f7\uff1a<\/p>\n
    ps -ef | grep tomcat<\/code><\/pre>\n
    \u6211\u4eec\u53ef\u4ee5\u770b\u5230Tomcat \u8fdb\u7a0b\u53f7\u662f 9217<\/p>\n
    1.\u67e5\u770b\u662f\u5426\u914d\u7f6e\u751f\u6548\uff1a<\/p>\n
    sudo jmap\u00a0\u2013heap 9217<\/code><\/pre>\n
    \u6211\u4eec\u53ef\u4ee5\u770b\u5230MaxHeapSize \u7b49\u53c2\u6570\u5df2\u7ecf\u751f\u6548\u3002<\/p>\n
    <\/h4>\n
    \u4e8c.Tomcat\u5e76\u53d1\u4f18\u5316<\/strong><\/h4>\n
    1.Tomcat\u8fde\u63a5\u76f8\u5173\u53c2\u6570<\/strong><\/p>\n
    \u5728Tomcat\u914d\u7f6e\u6587\u4ef6conf\u4e0b\u9762 server.xml \u4e2d\u7684\u914d\u7f6e\u4e2d\u548c\u8fde\u63a5\u6570\u76f8\u5173\u7684\u53c2\u6570\u6709\uff1a<\/p>\n
    minProcessors\uff1a\u6700\u5c0f\u7a7a\u95f2\u8fde\u63a5\u7ebf\u7a0b\u6570\uff0c\u7528\u4e8e\u63d0\u9ad8\u7cfb\u7edf\u5904\u7406\u6027\u80fd\uff0c\u9ed8\u8ba4\u503c\u4e3a10\nmaxProcessors\uff1a\u6700\u5927\u8fde\u63a5\u7ebf\u7a0b\u6570\uff0c\u5373\uff1a\u5e76\u53d1\u5904\u7406\u7684\u6700\u5927\u8bf7\u6c42\u6570\uff0c\u9ed8\u8ba4\u503c\u4e3a75\nacceptCount\uff1a\u5141\u8bb8\u7684\u6700\u5927\u8fde\u63a5\u6570\uff0c\u5e94\u5927\u4e8e\u7b49\u4e8emaxProcessors\uff0c\u9ed8\u8ba4\u503c\u4e3a100\nenableLookups\uff1a\u662f\u5426\u53cd\u67e5\u57df\u540d\uff0c\u53d6\u503c\u4e3a\uff1atrue\u6216false\u3002\u4e3a\u4e86\u63d0\u9ad8\u5904\u7406\u80fd\u529b\uff0c\u5e94\u8bbe\u7f6e\u4e3afalse\nconnectionTimeout\uff1a\u7f51\u7edc\u8fde\u63a5\u8d85\u65f6\uff0c\u5355\u4f4d\uff1a\u6beb\u79d2\u3002\u8bbe\u7f6e\u4e3a0\u8868\u793a\u6c38\u4e0d\u8d85\u65f6\uff0c\u8fd9\u6837\u8bbe\u7f6e\u6709\u9690\u60a3\u7684\u3002\u901a\u5e38\u53ef\u8bbe\u7f6e\u4e3a30000\u6beb\u79d2\u3002<\/code><\/pre>\n
    1.\u53c2\u6570\u8bf4\u660e
    \n\u9ed8\u8ba4\u7684tomcat \u53c2\u6570\uff1a<\/p>\n
    <Connector port=\u201c8080\" protocol=\"HTTP\/1.1\"\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 connectionTimeout=\"20000\"\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 redirectPort=\"8443\" \/><\/code><\/pre>\n
    \u4fee\u6539\uff1a<\/p>\n
    <Connector port=\u201c8080\" protocol=\"org.apache.coyote.http11.Http11NioProtocol\"\n \u00a0maxThreads=\"600\"\n \u00a0minSpareThreads=\"100\"\n \u00a0maxSpareThreads=\"500\"\n \u00a0acceptCount=\"700\"\n \u00a0connectionTimeout=\"20000\"\n \u00a0redirectPort=\"8443\" \/><\/code><\/pre>\n
    \u8fd9\u6837\u8bbe\u7f6e\u4ee5\u540e\uff0c\u57fa\u672c\u4e0a\u6ca1\u6709\u518d\u5f53\u673a\u8fc7\u3002<\/p>\n
    protocol=\"org.apache.coyote.http11.Http11NioProtocol\" \/\/\/\u4f7f\u7528java\u7684\u5f02\u6b65io\u62a4\u7406\u6280\u672f,no blocking IO\nmaxThreads=\u201c600\" \u8868\u793a\u6700\u591a\u540c\u65f6\u5904\u7406600\u4e2a\u8fde\u63a5 \/\/\/\u6700\u5927\u7ebf\u7a0b\u6570\nminSpareThreads=\u201c100\" \u8868\u793a\u5373\u4f7f\u6ca1\u6709\u4eba\u4f7f\u7528\u4e5f\u5f00\u8fd9\u4e48\u591a\u7a7a\u7ebf\u7a0b\u7b49\u5f85 \u00a0\/\/\/\u521d\u59cb\u5316\u65f6\u521b\u5efa\u7684\u7ebf\u7a0b\u6570\nmaxSpareThreads=\u201c500\" \u8868\u793a\u5982\u679c\u6700\u591a\u53ef\u4ee5\u7a7a500\u4e2a\u7ebf\u7a0b\uff0c\u4f8b\u5982\u67d0\u65f6\u523b\u6709505\u4eba\u8bbf\u95ee\uff0c\u4e4b\u540e\u6ca1\u6709\u4eba\u8bbf\u95ee\u4e86\uff0c\u5219tomcat\u4e0d\u4f1a\u4fdd\u7559505\u4e2a\u7a7a\u7ebf\u7a0b\uff0c\u800c\u662f\u5173\u95ed505\u4e2a\u7a7a\u7684\u3002 \u00a0 \/\/\/\u4e00\u65e6\u521b\u5efa\u7684\u7ebf\u7a0b\u8d85\u8fc7\u8fd9\u4e2a\u503c\uff0cTomcat\u5c31\u4f1a\u5173\u95ed\u4e0d\u518d\u9700\u8981\u7684socket\u7ebf\u7a0b\u3002\nacceptCount=\"700\"\/\/\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<\/code><\/pre>\n
    \u8fd9\u91cc\u662fhttp connector\u7684\u4f18\u5316\uff0c\u5982\u679c\u4f7f\u7528apache\u548ctomcat\u505a\u96c6\u7fa4\u7684\u8d1f\u8f7d\u5747\u8861\uff0c\u5e76\u4e14\u4f7f\u7528ajp\u534f\u8bae\u505aapache\u548ctomcat\u7684\u534f\u8bae\u8f6c\u53d1\uff0c\u90a3\u4e48\u8fd8\u9700\u8981\u4f18\u5316ajp connector\u3002<\/p>\n
    <Connector port=\"8009\" protocol=\"AJP\/1.3\" maxThreads=\"600\" minSpareThreads=\"100\" maxSpareThreads=\"500\" acceptCount=\"700\" connectionTimeout=\"20000\" redirectPort=\"8443\" \/><\/code><\/pre>\n
    \u89e3\u51b3\u5e38\u9047\u5230\u7684\u4e00\u4e9b\u62a5\u9519<\/p>\n
    \u4e00\u3001Tomcat\u7684JVM\u63d0\u793a\u5185\u5b58\u6ea2\u51fa<\/h6>\n
    \u67e5\u770b%TOMCAT_HOME%\\logs\u6587\u4ef6\u5939\u4e0b\uff0c\u65e5\u5fd7\u6587\u4ef6\u662f\u5426\u6709\u5185\u5b58\u6ea2\u51fa\u9519\u8bef<\/p>\n
    \u4e8c\u3001\u4fee\u6539Tomcat\u7684JVM<\/p>\n
    1\u3001\u9519\u8bef\u63d0\u793a\uff1ajava.lang.OutOfMemoryError: Java heap space<\/p>\n
    Tomcat\u9ed8\u8ba4\u53ef\u4ee5\u4f7f\u7528\u7684\u5185\u5b58\u4e3a128MB\uff0c\u5728\u8f83\u5927\u578b\u7684\u5e94\u7528\u9879\u76ee\u4e2d\uff0c\u8fd9\u70b9\u5185\u5b58\u662f\u4e0d\u591f\u7684\uff0c\u6709\u53ef\u80fd\u5bfc\u81f4\u7cfb\u7edf\u65e0\u6cd5\u8fd0\u884c\u3002\u5e38\u89c1\u7684\u95ee\u9898\u662f\u62a5Tomcat\u5185\u5b58\u6ea2\u51fa\u9519\u8bef\uff0cOut of Memory(\u7cfb\u7edf\u5185\u5b58\u4e0d\u8db3)\u7684\u5f02\u5e38\uff0c\u4ece\u800c\u5bfc\u81f4\u5ba2\u6237\u7aef\u663e\u793a500\u9519\u8bef\uff0c\u4e00\u822c\u8c03\u6574Tomcat\u7684\u4f7f\u7528\u5185\u5b58\u5373\u53ef\u89e3\u51b3\u6b64\u95ee\u9898\u3002<\/p>\n
    windows\u73af\u5883\u4e0b\u4fee\u6539<\/p>\n
    \u201c%TOMCAT_HOME%\\bin\\catalina.bat\u201d\u6587\u4ef6\uff0c\u5728\u6587\u4ef6\u5f00\u5934\u589e\u52a0\u5982\u4e0b\u8bbe\u7f6e\uff1aJAVA_OPTS=-Xms2048m -Xmx2048m<\/code><\/pre>\n
    Linux\u73af\u5883\u4e0b\u4fee\u6539<\/p>\n
    \u201c%TOMCAT_HOME%\\bin\\catalina.sh\u201d\u6587\u4ef6\uff0c\u5728\u6587\u4ef6\u5f00\u5934\u589e\u52a0\u5982\u4e0b\u8bbe\u7f6e\uff1aJAVA_OPTS=-Xms2048m -Xmx2048m<\/code><\/pre>\n
    \u5176\u4e2d\uff0c-Xms\u8bbe\u7f6e\u521d\u59cb\u5316\u5185\u5b58\u5927\u5c0f\uff0c-Xmx\u8bbe\u7f6e\u53ef\u4ee5\u4f7f\u7528\u7684\u6700\u5927\u5185\u5b58\u3002<\/p>\n
    \u8ddf\u6211\u4e0a\u9762\u90a3\u4e48\u8bbe\u7f6e\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n
    2\u3001\u9519\u8bef\u63d0\u793a\uff1ajava.lang.OutOfMemoryError: PermGen space<\/p>\n
    \u539f\u56e0\uff1a<\/p>\n
    PermGen space\u7684\u5168\u79f0\u662fPermanent Generation space,\u662f\u6307\u5185\u5b58\u7684\u6c38\u4e45\u4fdd\u5b58\u533a\u57df\uff0c\u8fd9\u5757\u5185\u5b58\u4e3b\u8981\u662f\u88abJVM\u5b58\n\u653eClass\u548cMeta\u4fe1\u606f\u7684,Class\u5728\u88abLoader\u65f6\u5c31\u4f1a\u88ab\u653e\u5230PermGen space\u4e2d\uff0c\u5b83\u548c\u5b58\u653e\u7c7b\u5b9e\u4f8b(Instance)\u7684Heap\u533a\u57df\u4e0d\u540c,GC(Garbage Collection)\u4e0d\u4f1a\u5728\u4e3b\u7a0b\u5e8f\u8fd0\u884c\u671f\u5bf9PermGen space\u8fdb\u884c\u6e05\u7406\uff0c\u6240\u4ee5\u5982\u679c\u4f60\u7684\u5e94\u7528\u4e2d\u6709\u5f88CLASS\u7684\u8bdd,\u5c31\u5f88\u53ef\u80fd\u51fa\u73b0PermGen space\u9519\u8bef\uff0c\u8fd9\u79cd\u9519\u8bef\u5e38\u89c1\u5728web\u670d\u52a1\u5668\u5bf9JSP\u8fdb\u884cpre compile\u7684\u65f6\u5019\u3002\u5982\u679c\u4f60\u7684WEB APP\u4e0b\u90fd\u7528\u4e86\u5927\u91cf\u7684\u7b2c\u4e09\u65b9jar, \u5176\u5927\u5c0f\u8d85\u8fc7\u4e86jvm\u9ed8\u8ba4\u7684\u5927\u5c0f(4M)\u90a3\u4e48\u5c31\u4f1a\u4ea7\u751f\u6b64\u9519\u8bef\u4fe1\u606f\u4e86\u3002<\/code><\/pre>\n
    \u89e3\u51b3\u65b9\u6cd5\uff1a<\/p>\n
    \u5728catalina.bat\u7684\u7b2c\u4e00\u884c\u589e\u52a0\uff1a<\/p>\n
    set JAVA_OPTS=-Xms64m -Xmx256m -XX:PermSize=128M -XX:MaxNewSize=256m - XX:MaxPermSize=256m<\/code><\/pre>\n
    \u5728catalina.sh\u7684\u7b2c\u4e00\u884c\u589e\u52a0\uff1a<\/p>\n
    JAVA_OPTS=-Xms64m -Xmx256m -XX:PermSize=128M -XX:MaxNewSize=256m \u00a0XX:MaxPermSize=256m<\/code><\/pre>\n
    \u4e09\u3001\u67e5\u770bTomcat\u7684JVM\u5185\u5b58<\/strong><\/h6>\n
      \n
    1. Tomcat6\u4e2d\u6ca1\u6709\u8bbe\u7f6e\u4efb\u4f55\u9ed8\u8ba4\u7528\u6237\uff0c\u56e0\u800c\u9700\u8981\u624b\u52a8\u5f80Tomcat6\u7684conf\u6587\u4ef6\u5939\u4e0b\u7684tomcat-users.xml\u6587\u4ef6\u4e2d\u6dfb\u52a0\u7528\u6237\u3002 \u5982\uff1a\n
      <role rolename=\"manager\"\/>\n \u00a0<user username=\"tomcat\" password=\"tomcat\" roles=\"manager\"\/><\/code><\/pre>\n<\/li>\n<\/ol>\n
      \u6ce8\uff1a\u6dfb\u52a0\u5b8c\u9700\u8981\u91cd\u542fTomcat6\u3002<\/p>\n
        \n
      1. \u8bbf\u95eehttp:\/\/localhost:8080\/manager\/status\uff0c\u8f93\u5165\u4e0a\u9762\u6dfb\u52a0\u7684\u7528\u6237\u540d\u548c\u5bc6\u7801\u3002<\/li>\n
      2. \u7136\u540e\u5728\u5982\u4e0b\u9762\u7684JVM\u4e0b\u53ef\u4ee5\u770b\u5230\u5185\u5b58\u7684\u4f7f\u7528\u60c5\u51b5\u3002<\/li>\n<\/ol>\n<\/section>\n","protected":false},"excerpt":{"rendered":"
        \u8f6c\u81ea\uff1ahttp:\/\/www.sysopen.cn\/20165012\/ \u4f5c\u8005\uff1ayangc tomcat\u7684\u5185\u5b58\u4f7f\u7528\u914d\u7f6e\uff0c\u6700\u5927\u8fde\u63a5\u6570\u914d\u7f6e\u3002 \u5982\u4f55\u4fee\u6539\u914d\u7f6e\u5462\uff0c\u5728\/tomcat\u7684\/bin\/\u4e0b\u9762\u6709\u4e2a\u811a\u672c\u6587\u4ef6catailna.sh\u3002 \u5982\u679c windows \u662fbat\u8bbe\u7f6etomcat\u7684\u4f7f\u7528\u5185\u5b58\uff0c\u5176\u5b9e\u5c31\u662f\u8bbe\u7f6ejvm\u7684\u4f7f\u7528\u53c2\u6570\u3002 \u4e00.Tomcat\u5185\u5b58\u4f18\u5316 Tomcat\u5185\u5b58\u4f18\u5316\u4e3b\u8981\u662f\u5bf9 tomcat \u542f\u52a8\u53c2\u6570\u4f18\u5316\uff0c\u6211\u4eec\u53ef\u4ee5\u5728 tomcat \u7684\u542f\u52a8\u811a\u672c catalina.sh \u4e2d\u8bbe\u7f6e JAVA_OPTS \u53c2\u6570\u3002 1.JAVA_OPTS\u53c2\u6570\u8bf4\u660e Java\u4ee3\u7801 -server […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1203","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=\/wp\/v2\/posts\/1203","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1203"}],"version-history":[{"count":0,"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=\/wp\/v2\/posts\/1203\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1203"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1203"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1203"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}