{"id":893,"date":"2020-09-19T04:21:00","date_gmt":"2020-09-18T20:21:00","guid":{"rendered":"http:\/\/www.langmanezhuang.com\/index.php\/2020\/09\/19\/java_opts%e8%ae%be%e7%bd%ae%e8%af%a6%e8%a7%a3%e5%8f%8atomcat%e9%85%8d%e7%bd%ae%e5%8f%82%e6%95%b0%e9%85%8d%e7%bd%ae\/"},"modified":"2020-09-19T04:21:00","modified_gmt":"2020-09-18T20:21:00","slug":"java_opts%e8%ae%be%e7%bd%ae%e8%af%a6%e8%a7%a3%e5%8f%8atomcat%e9%85%8d%e7%bd%ae%e5%8f%82%e6%95%b0%e9%85%8d%e7%bd%ae","status":"publish","type":"post","link":"http:\/\/blog.langmanezhuang.com\/index.php\/2020\/09\/19\/java_opts%e8%ae%be%e7%bd%ae%e8%af%a6%e8%a7%a3%e5%8f%8atomcat%e9%85%8d%e7%bd%ae%e5%8f%82%e6%95%b0%e9%85%8d%e7%bd%ae\/","title":{"rendered":"JAVA_OPTS\u8bbe\u7f6e\u8be6\u89e3\u53caTomcat\u914d\u7f6e\u53c2\u6570\u914d\u7f6e"},"content":{"rendered":"

1\u3001\u6587\u4ef6\u4f4d\u7f6e
\u6253\u5f00bin\/catalina.bat\u6587\u4ef6<\/p>\n

\u793a\u4f8b\uff1a<\/p>\n

JAVA_OPTS=”-Xms256m -Xmx512m -Xss256K -Djava.security.egd=file:\/dev\/.\/urandom -Dspring.profiles.active=test”<\/p>\n

1\uff09\u7ed9\u51fa\u4e86\u5bf9\u5185\u5b58\u7684\u914d\u7f6e\u3002<\/p>\n

2\uff09\u4ee5\u53caspring boot \u4f7f\u7528spring.profiles.active\u6765\u5206\u533a\u914d\u7f6e\u3002<\/p>\n

\u9879\u76ee\u7684\u90e8\u7f72\uff0c\u5f00\u53d1\u73af\u5883\u3001\u6d4b\u8bd5\u73af\u5883\u3001\u9884\u53d1\u5e03\u73af\u5883\u3001\u751f\u4ea7\u73af\u5883\u7684\u73af\u5883\u914d\u7f6e\u662f\u4e0d\u540c\u7684\uff1b\u6bd4\u5982\uff0c\u6570\u636e\u5e93\u914d\u7f6e\uff0c\u5728\u5f00\u53d1\u7684\u65f6\u5019\uff0c\u6211\u4eec\u4e00\u822c\u7528\u6d4b\u8bd5\u6570\u636e\u5e93\uff0c\u800c\u5728\u751f\u4ea7\u73af\u5883\u7684\u65f6\u5019\uff0c\u6211\u4eec\u662f\u7528\u6b63\u5f0f\u7684\u6570\u636e\uff0c\u8fd9\u65f6\u5019\uff0c\u6211\u4eec\u53ef\u4ee5\u5229\u7528profile\u5728\u4e0d\u540c\u7684\u73af\u5883\u4e0b\u914d\u7f6e\u7528\u4e0d\u540c\u7684\u914d\u7f6e\u6587\u4ef6\u6216\u8005\u4e0d\u540c\u7684\u914d\u7f6e.<\/p>\n

Spring boot\u5141\u8bb8\u4f60\u901a\u8fc7\u547d\u540d\u7ea6\u5b9a\u6309\u7167\u4e00\u5b9a\u7684\u683c\u5f0f(application-{profile}.properties)\u6765\u5b9a\u4e49\u591a\u4e2a\u914d\u7f6e\u6587\u4ef6\uff0c\u7136\u540e\u901a\u8fc7\u5728application.properyies\u901a\u8fc7spring.profiles.active\u6765\u5177\u4f53\u6fc0\u6d3b\u4e00\u4e2a\u6216\u8005\u591a\u4e2a\u914d\u7f6e\u6587\u4ef6\uff0c\u5982\u679c\u6ca1\u6709\u6ca1\u6709\u6307\u5b9a\u4efb\u4f55profile\u7684\u914d\u7f6e\u6587\u4ef6\u7684\u8bdd\uff0cspring boot\u9ed8\u8ba4\u4f1a\u542f\u52a8application-default.properties\u3002<\/p>\n

2\u3001JAVA_OPTS\u8bbe\u7f6e
2.1\u3001JAVA_OPTS \uff0c\u987e\u540d\u601d\u4e49\uff0c\u662f\u7528\u6765\u8bbe\u7f6eJVM\u76f8\u5173\u8fd0\u884c\u53c2\u6570\u7684\u53d8\u91cf\u3002<\/p>\n

JVM:JAVA_OPTS=”-server -Xms2048m -Xmx2048m -Xss512k”<\/p>\n

-server: \u4e00\u5b9a\u8981\u4f5c\u4e3a\u7b2c\u4e00\u4e2a\u53c2\u6570\uff0c\u5728\u591a\u4e2aCPU\u65f6\u6027\u80fd\u4f73*\u3002<\/p>\n

-Xms\uff1a\u521d\u59cbHeap\u5927\u5c0f\uff0c\u4f7f\u7528\u7684\u6700\u5c0f\u5185\u5b58,cpu\u6027\u80fd\u9ad8\u65f6\u6b64\u503c\u5e94\u8bbe\u7684\u5927\u4e00\u4e9b\u3002<\/p>\n

-Xmx\uff1ajava heap\u6700\u5927\u503c\uff0c\u4f7f\u7528\u7684\u6700\u5927\u5185\u5b58\u3002<\/p>\n

\u4e0a\u9762\u4e24\u4e2a\u503c\u662f\u5206\u914dJVM\u7684\u6700\u5c0f\u548c\u6700\u5927\u5185\u5b58\uff0c\u53d6\u51b3\u4e8e\u786c\u4ef6\u7269\u7406\u5185\u5b58\u7684\u5927\u5c0f\uff0c\u5efa\u8bae\u5747\u8bbe\u4e3a\u7269\u7406\u5185\u5b58\u7684\u4e00\u534a\u3002<\/p>\n

-XX:PermSize:\u8bbe\u5b9a\u5185\u5b58\u7684\u6c38\u4e45\u4fdd\u5b58\u533a\u57df<\/p>\n

-XX:MaxPermSize:\u8bbe\u5b9a\u6700\u5927\u5185\u5b58\u7684\u6c38\u4e45\u4fdd\u5b58\u533a\u57df<\/p>\n

-XX:MaxNewSize:<\/p>\n

-Xss 15120 \u8fd9\u4f7f\u5f97JBoss\u6bcf\u589e\u52a0\u4e00\u4e2a\u7ebf\u7a0b\uff08thread)\u5c31\u4f1a\u7acb\u5373\u6d88\u801715M\u5185\u5b58\uff0c\u800c\u6700\u4f73\u503c\u5e94\u8be5\u662f128K,\u9ed8\u8ba4\u503c\u597d\u50cf\u662f512k.<\/p>\n

+XX:AggressiveHeap \u4f1a\u4f7f\u5f97 Xms\u6ca1\u6709\u610f\u4e49\u3002\u8fd9\u4e2a\u53c2\u6570\u8ba9jvm\u5ffd\u7565Xmx\u53c2\u6570,\u75af\u72c2\u5730\u5403\u5b8c\u4e00\u4e2aG\u7269\u7406\u5185\u5b58,\u518d\u5403\u5c3d\u4e00\u4e2aG\u7684swap\u3002<\/p>\n

-Xss\uff1a\u6bcf\u4e2a\u7ebf\u7a0b\u7684Stack\u5927\u5c0f<\/p>\n

-verbose:gc \u73b0\u5b9e\u5783\u573e\u6536\u96c6\u4fe1\u606f<\/p>\n

-Xloggc:gc.log \u6307\u5b9a\u5783\u573e\u6536\u96c6\u65e5\u5fd7\u6587\u4ef6<\/p>\n

-Xmn\uff1ayoung generation\u7684heap\u5927\u5c0f\uff0c\u4e00\u822c\u8bbe\u7f6e\u4e3aXmx\u76843\u30014\u5206\u4e4b\u4e00<\/p>\n

-XX:+UseParNewGC \uff1a\u7f29\u77edminor\u6536\u96c6\u7684\u65f6\u95f4<\/p>\n

-XX:+UseConcMarkSweepGC \uff1a\u7f29\u77edmajor\u6536\u96c6\u7684\u65f6\u95f4<\/p>\n

\u63d0\u793a\uff1a\u6b64\u9009\u9879\u5728Heap Size \u6bd4\u8f83\u5927\u800c\u4e14Major\u6536\u96c6\u65f6\u95f4\u8f83\u957f\u7684\u60c5\u51b5\u4e0b\u4f7f\u7528\u66f4\u5408\u9002\u3002<\/p>\n

PermGen space\u7684\u5168\u79f0\u662fPermanent Generation space,\u662f\u6307\u5185\u5b58\u7684\u6c38\u4e45\u4fdd\u5b58\u533a\u57dfOutOfMemoryError: PermGen space\u4ece\u8868\u9762\u4e0a\u770b\u5c31\u662f\u5185\u5b58\u76ca\u51fa\uff0c\u89e3\u51b3\u65b9\u6cd5\u4e5f\u4e00\u5b9a\u662f\u52a0\u5927\u5185\u5b58\u3002\u8bf4\u8bf4\u4e3a\u4ec0\u4e48\u4f1a\u5185\u5b58\u76ca\u51fa\uff1a\u8fd9\u4e00\u90e8\u5206\u7528\u4e8e\u5b58\u653eClass\u548cMeta\u7684\u4fe1\u606f,Class\u5728\u88ab Load\u7684\u65f6\u5019\u88ab\u653e\u5165PermGen space\u533a\u57df\uff0c\u5b83\u548c\u548c\u5b58\u653eInstance\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\u7684APP\u4f1aLOAD\u5f88\u591aCLASS\u7684\u8bdd,\u5c31\u5f88\u53ef\u80fd\u51fa\u73b0PermGen space\u9519\u8bef\u3002\u8fd9\u79cd\u9519\u8bef\u5e38\u89c1\u5728web\u670d\u52a1\u5668\u5bf9JSP\u8fdb\u884cpre compile\u7684\u65f6\u5019\u3002\u6539\u6b63\u65b9\u6cd5\uff1a-Xms256m -Xmx256m -XX:MaxNewSize=256m -XX:MaxPermSize=256m<\/p>\n

2.2\u3001\u5728tomcat\u4e2dredeploy\u65f6\u51fa\u73b0outofmemory\u7684\u9519\u8bef. \u53ef\u4ee5\u6709\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\u7684\u539f\u56e0:<\/p>\n

1) \u4f7f\u7528\u4e86proxool,\u56e0\u4e3aproxool\u5185\u90e8\u5305\u542b\u4e86\u4e00\u4e2a\u8001\u7248\u672c\u7684cglib.<\/p>\n

2) log4j,\u6700\u597d\u4e0d\u7528,\u53ea\u7528common-logging<\/p>\n

3) \u8001\u7248\u672c\u7684cglib,\u5feb\u70b9\u66f4\u65b0\u5230\u6700\u65b0\u7248\u3002<\/p>\n

4) \u66f4\u65b0\u5230\u6700\u65b0\u7684hibernate3.2 3<\/p>\n

3\u3001\u5b9e\u4f8b\u6f14\u793a
\u8fd9\u91cc\u4ee5tomcat\u73af\u5883\u4e3a\u4f8b\uff0c\u5176\u5b83WEB\u670d\u52a1\u5668\u5982jboss,weblogic\u7b49\u662f\u540c\u4e00\u4e2a\u9053\u7406\u3002<\/p>\n

\u4e00\u3001java.lang.OutOfMemoryError: PermGen space PermGen space\u7684\u5168\u79f0\u662fPermanent Generation space,\u662f\u6307\u5185\u5b58\u7684\u6c38\u4e45\u4fdd\u5b58\u533a\u57df, \u8fd9\u5757\u5185\u5b58\u4e3b\u8981\u662f\u88abJVM\u5b58\u653eClass\u548cMeta\u4fe1\u606f\u7684,Class\u5728\u88abLoader\u65f6\u5c31\u4f1a\u88ab\u653e\u5230PermGen space\u4e2d, \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\u5bf9 PermGen space\u8fdb\u884c\u6e05\u7406\uff0c\u6240\u4ee5\u5982\u679c\u4f60\u7684\u5e94\u7528\u4e2d\u6709\u5f88\u591aCLASS\u7684\u8bdd,\u5c31\u5f88\u53ef\u80fd\u51fa\u73b0PermGen space\u9519\u8bef, \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<\/p>\n

\u89e3\u51b3\u65b9\u6cd5\uff1a \u624b\u52a8\u8bbe\u7f6eMaxPermSize\u5927\u5c0f\u4fee\u6539TOMCAT_HOME\/bin\/catalina.sh \u5728“echo “Using CATALINA_BASE: $CATALINA_BASE””\u4e0a\u9762\u52a0\u5165\u4ee5\u4e0b\u884c\uff1a JAVA_OPTS=”-server -XX:PermSize=64M -XX:MaxPermSize=128m<\/p>\n

\u5efa\u8bae\uff1a\u5c06\u76f8\u540c\u7684\u7b2c\u4e09\u65b9jar\u6587\u4ef6\u79fb\u7f6e\u5230tomcat\/shared\/lib\u76ee\u5f55\u4e0b\uff0c\u8fd9\u6837\u53ef\u4ee5\u8fbe\u5230\u51cf\u5c11jar \u6587\u6863\u91cd\u590d\u5360\u7528\u5185\u5b58\u7684\u76ee\u7684\u3002<\/p>\n

\u4e8c\u3001java.lang.OutOfMemoryError: Java heap space Heap size \u8bbe\u7f6e 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\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\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<\/p>\n

\u89e3\u51b3\u65b9\u6cd5\uff1a\u624b\u52a8\u8bbe\u7f6eHeap size \u4fee\u6539TOMCAT_HOME\/bin\/catalina.sh \u5728“echo “Using CATALINA_BASE: $CATALINA_BASE””\u4e0a\u9762\u52a0\u5165<\/p>\n

\u4e0b\u884c\uff1a JAVA_OPTS=”-server -Xms800m -Xmx800m -XX:MaxNewSize=256m”<\/p>\n

\u4e09\u3001\u4e0b\u9762\u7ed9\u51fa1G\u5185\u5b58\u73af\u5883\u4e0bJava jvm \u7684\u53c2\u6570\u8bbe\u7f6e \uff0c\u4f5c\u4e3a\u53c2\u8003<\/p>\n

JAVA_OPTS=”-server -Xms800m -Xmx800m -XX:PermSize=64M -XX:MaxNewSize=256m -XX:MaxPermSize=128m -Djava.awt.headless=true “<\/p>\n

 <\/p>\n

\u56db\u3001\u4e0d\u540c\u542f\u52a8\u65b9\u5f0f\u914d\u7f6e\u65b9\u5f0f<\/p>\n

1.\u6ce8\u518c\u670d\u52a1\u7684\u542f\u52a8\u65b9\u5f0f\uff08\u53c2\u7167\u535a\u5ba2\uff1ahttps:\/\/www.cnblogs.com\/JoePotter\/p\/11773317.html\uff09<\/p>\n

  \u6ce8\u610f<\/span>\uff1a\u5728\u6ce8\u518c\u670d\u52a1\u524d\u4fee\u6539\u914d\u7f6e\u6587\u4ef6$TOMCAT_HOMEbinservice.bat<\/p>\n

    <\/p>\n

\n
if \"%SERVICE_STARTUP_MODE%\" == \"\" set SERVICE_STARTUP_MODE=manual\nif \"%JvmMs%\" == \"\" set JvmMs=2048<\/span>\nif \"%JvmMx%\" == \"\" set JvmMx=2048\n<\/span><\/pre>\n<\/div>\n
\u3000\u3000\u6ce8\u518c\u670d\u52a1\u5373\u53ef\u914d\u7f6e\u6210\u529f\u3002<\/p>\n
2.\u4ee5startup.bat\u65b9\u5f0f\u542f\u52a8<\/p>\n
 \u4fee\u6539\u914d\u7f6e\u6587\u4ef6$TOMCAT_HOMEbincatalina.bat<\/p>\n
 \u5728\u7b2c\u4e00\u884c\u4f4d\u7f6e\u6dfb\u52a0\uff1aset JAVA_OPTS=%JAVA_OPTS% -server -Xms2048m -Xmx2048m<\/p>\n","protected":false},"excerpt":{"rendered":"
1\u3001\u6587\u4ef6\u4f4d\u7f6e\u6253\u5f00bin\/catalina.bat\u6587\u4ef6 \u793a\u4f8b\uff1a JAVA_OPTS=”-Xms256 … \u7ee7\u7eed\u9605\u8bfb JAVA_OPTS\u8bbe\u7f6e\u8be6\u89e3\u53caTomcat\u914d\u7f6e\u53c2\u6570\u914d\u7f6e<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"http:\/\/blog.langmanezhuang.com\/index.php\/wp-json\/wp\/v2\/posts\/893"}],"collection":[{"href":"http:\/\/blog.langmanezhuang.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.langmanezhuang.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.langmanezhuang.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.langmanezhuang.com\/index.php\/wp-json\/wp\/v2\/comments?post=893"}],"version-history":[{"count":0,"href":"http:\/\/blog.langmanezhuang.com\/index.php\/wp-json\/wp\/v2\/posts\/893\/revisions"}],"wp:attachment":[{"href":"http:\/\/blog.langmanezhuang.com\/index.php\/wp-json\/wp\/v2\/media?parent=893"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.langmanezhuang.com\/index.php\/wp-json\/wp\/v2\/categories?post=893"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.langmanezhuang.com\/index.php\/wp-json\/wp\/v2\/tags?post=893"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}