1
的Web應用程序偶爾會掛起約30秒，當用戶請求一個網頁，服務器的CPU和內存使用情況是好的，和jstack顯示：有時Java的Web應用程序掛
"http-9999-3" daemon prio=6 tid=0x552f3400 nid=0xf40 runnable [0x578fc000]
java.lang.Thread.State: RUNNABLE
at org.eclipse.jdt.internal.compiler.parser.Parser.getTypeReference(Parser.java:8354)
at org.eclipse.jdt.internal.compiler.parser.Parser.consumeClassHeaderExtends(Parser.java:2125)
at org.eclipse.jdt.internal.compiler.parser.Parser.consumeRule(Parser.java:5107)
at org.eclipse.jdt.internal.compiler.parser.Parser.parse(Parser.java:9020)
at org.eclipse.jdt.internal.compiler.parser.Parser.parse(Parser.java:9251)
at org.eclipse.jdt.internal.compiler.parser.Parser.parse(Parser.java:9208)
at org.eclipse.jdt.internal.compiler.parser.Parser.dietParse(Parser.java:7864)
at org.eclipse.jdt.internal.compiler.Compiler.internalBeginToCompile(Compiler.java:587)
at org.eclipse.jdt.internal.compiler.Compiler.beginToCompile(Compiler.java:357)
at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:371)
at org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:413)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:317)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:295)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:282)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:586)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
- locked <0x10a75fc0> (a org.apache.jasper.servlet.JspServletWrapper)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:535)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:472)
......
似乎它與相關一些jsp文件，如何找到根本原因？謝謝。