-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Sam,
On 2/20/2009 12:11 PM, Sam Hokin wrote: > jstack.0.txt ran BEFORE my test request. Your server is completely idle, here. > jstack.1-11.txt ran DURING the long wait. Observing jstack.1.txt, it looks like this is the only running thread (complete stack trace shown just for this first one): Thread 9994: (state = IN_NATIVE) - java.io.UnixFileSystem.getBooleanAttributes0(java.io.File) @bci=0 (Compiled frame; information may be imprecise) - java.io.UnixFileSystem.getBooleanAttributes(java.io.File) @bci=2, line=228 (Compiled frame) - java.io.File.exists() @bci=20, line=733 (Compiled frame) - sun.misc.URLClassPath$FileLoader.getResource(java.lang.String, boolean) @bci=136, line=995 (Compiled frame) - sun.misc.URLClassPath$FileLoader.findResource(java.lang.String, boolean) @bci=3, line=962 (Compiled frame) - sun.misc.URLClassPath.findResource(java.lang.String, boolean) @bci=17, line=145 (Compiled frame) - java.net.URLClassLoader$2.run() @bci=12, line=362 (Compiled frame) - java.security.AccessController.doPrivileged(java.security.PrivilegedAction, java.security.AccessControlContext) @bci=0 (Interpreted frame) - java.net.URLClassLoader.findResource(java.lang.String) @bci=13, line=359 (Compiled frame) - java.lang.ClassLoader.getResource(java.lang.String) @bci=30, line=978 (Compiled frame) - java.lang.ClassLoader.getResource(java.lang.String) @bci=12, line=973 (Compiled frame) - java.lang.ClassLoader.getResourceAsStream(java.lang.String) @bci=2, line=1168 (Interpreted frame) - org.apache.catalina.loader.WebappClassLoader.getResourceAsStream(java.lang.String) @bci=326, line=1205 (Interpreted frame) - org.apache.jasper.servlet.JasperLoader.getResourceAsStream(java.lang.String) @bci=5, line=144 (Interpreted frame) - org.apache.jasper.compiler.JDTCompiler$1.findType(java.lang.String) @bci=89, line=193 (Compiled frame) - org.apache.jasper.compiler.JDTCompiler$1.findType(char[], char[][]) @bci=124, line=178 (Compiled frame) - org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.askForType(org.eclipse.jdt.internal.compiler.lookup.PackageBinding, char[]) @bci=27, line=122 (Interpreted frame) - org.eclipse.jdt.internal.compiler.lookup.PackageBinding.getType(char[]) @bci=16, line=126 (Interpreted frame) - org.eclipse.jdt.internal.compiler.lookup.Scope.findType(char[], org.eclipse.jdt.internal.compiler.lookup.PackageBinding, org.eclipse.jdt.internal.compiler.lookup.PackageBinding) @bci=14, line=1351 (Compiled frame) - org.eclipse.jdt.internal.compiler.lookup.Scope.getTypeOrPackage(char[], int) @bci=1017, line=2408 (Compiled frame) - org.eclipse.jdt.internal.compiler.lookup.Scope.getPackage(char[][]) @bci=14, line=2090 (Interpreted frame) - org.eclipse.jdt.internal.compiler.ast.QualifiedTypeReference.getTypeBinding(org.eclipse.jdt.internal.compiler.lookup.Scope) @bci=17, line=69 (Interpreted frame) - org.eclipse.jdt.internal.compiler.ast.TypeReference.resolveType(org.eclipse.jdt.internal.compiler.lookup.ClassScope) @bci=36, line=163 (Interpreted frame) - org.eclipse.jdt.internal.compiler.ast.TypeReference.resolveSuperType(org.eclipse.jdt.internal.compiler.lookup.ClassScope) @bci=2, line=114 (Interpreted frame) - org.eclipse.jdt.internal.compiler.lookup.ClassScope.findSupertype(org.eclipse.jdt.internal.compiler.ast.TypeReference) @bci=35, line=1121 (Interpreted frame) - org.eclipse.jdt.internal.compiler.lookup.ClassScope.connectSuperclass() @bci=157, line=835 (Interpreted frame) - org.eclipse.jdt.internal.compiler.lookup.ClassScope.connectTypeHierarchy() @bci=34, line=960 (Interpreted frame) - org.eclipse.jdt.internal.compiler.lookup.CompilationUnitScope.connectTypeHierarchy() @bci=20, line=290 (Interpreted frame) - org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.completeTypeBindings() @bci=72, line=218 (Interpreted frame) - org.eclipse.jdt.internal.compiler.Compiler.internalBeginToCompile(org.eclipse.jdt.internal.compiler.env.ICompilationUnit[], int) @bci=198, line=603 (Interpreted frame) - org.eclipse.jdt.internal.compiler.Compiler.beginToCompile(org.eclipse.jdt.internal.compiler.env.ICompilationUnit[]) @bci=19, line=357 (Interpreted frame) - org.eclipse.jdt.internal.compiler.Compiler.compile(org.eclipse.jdt.internal.compiler.env.ICompilationUnit[]) @bci=6, line=371 (Interpreted frame) - org.apache.jasper.compiler.JDTCompiler.generateClass(java.lang.String[]) @bci=837, line=413 (Interpreted frame) - org.apache.jasper.compiler.Compiler.compile(boolean, boolean) @bci=30, line=317 (Interpreted frame) - org.apache.jasper.compiler.Compiler.compile(boolean) @bci=3, line=295 (Interpreted frame) - org.apache.jasper.compiler.Compiler.compile() @bci=2, line=282 (Interpreted frame) - org.apache.jasper.JspCompilationContext.compile() @bci=31, line=586 (Interpreted frame) - org.apache.jasper.servlet.JspServletWrapper.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, boolean) @bci=118, line=317 (Interpreted frame) - org.apache.jasper.servlet.JspServlet.serviceJspFile(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, java.lang.String, java.lang.Throwable, boolean) @bci=193, line=342 (Interpreted frame) - org.apache.jasper.servlet.JspServlet.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) @bci=436, line=267 (Interpreted frame) - javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest, javax.servlet.ServletResponse) @bci=30, line=717 (Interpreted frame) - org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse) @bci=374, line=290 (Interpreted frame) - org.apache.catalina.core.ApplicationFilterChain.doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse) @bci=101, line=206 (Interpreted frame) - org.apache.catalina.core.StandardWrapperValve.invoke(org.apache.catalina.connector.Request, org.apache.catalina.connector.Response) @bci=804, line=233 (Interpreted frame) - org.apache.catalina.core.StandardContextValve.invoke(org.apache.catalina.connector.Request, org.apache.catalina.connector.Response) @bci=365, line=191 (Interpreted frame) - org.apache.catalina.core.StandardHostValve.invoke(org.apache.catalina.connector.Request, org.apache.catalina.connector.Response) @bci=64, line=128 (Interpreted frame) - org.apache.catalina.valves.ErrorReportValve.invoke(org.apache.catalina.connector.Request, org.apache.catalina.connector.Response) @bci=6, line=102 (Interpreted frame) - org.apache.catalina.core.StandardEngineValve.invoke(org.apache.catalina.connector.Request, org.apache.catalina.connector.Response) @bci=42, line=109 (Interpreted frame) - org.apache.catalina.connector.CoyoteAdapter.service(org.apache.coyote.Request, org.apache.coyote.Response) @bci=157, line=286 (Interpreted frame) - org.apache.coyote.ajp.AjpAprProcessor.process(long) @bci=309, line=419 (Compiled frame) - org.apache.coyote.ajp.AjpAprProtocol$AjpConnectionHandler.process(long) @bci=39, line=378 (Interpreted frame) - org.apache.tomcat.util.net.AprEndpoint$Worker.run() @bci=147, line=1509 (Interpreted frame) - java.lang.Thread.run() @bci=11, line=619 (Interpreted frame) jstack.2.txt has the same stack trace: - java.io.UnixFileSystem.getBooleanAttributes0(java.io.File) @bci=0 (Compiled frame; information may be imprecise) - java.io.UnixFileSystem.getBooleanAttributes(java.io.File) @bci=2, line=228 (Compiled frame) - java.io.File.exists() @bci=20, line=733 (Compiled frame) - sun.misc.URLClassPath$FileLoader.getResource(java.lang.String, boolean) @bci=136, line=995 (Compiled frame) - sun.misc.URLClassPath$FileLoader.findResource(java.lang.String, boolean) @bci=3, line=962 (Compiled frame) - sun.misc.URLClassPath.findResource(java.lang.String, boolean) @bci=17, line=145 (Compiled frame) jstack.8.txt is the last thread dump where File.exists was stalled. > http://ims.net/jstack/jstack.9.txt > http://ims.net/jstack/jstack.10.txt > http://ims.net/jstack/jstack.11.txt The server appears to be idle, here. It's a little weird that thread 9770 has NO STACK INFO AT ALL. > http://ims.net/jstack/jstack.12.txt > http://ims.net/jstack/jstack.13.txt Also idle. > I wish I could divine something informative from these. Perhaps one of > you can. > > I'm also trying to use Wireshark to see if there is some specific net > activity that's going on during the long wait, as suggested by David Smith. Obviously, the File.exists method shouldn't be taking that long... it's a pretty simple operation. Are you using an NFS or other network share? Does your disk have any physical problems? Is this machine running next to any equipment that generates a lot of stray alpha particles? :) - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkme8HsACgkQ9CaO5/Lv0PB6NACgp5TaO3shV+t2Z/Bjd7a/ZWYP H0EAn2Y6A8xHEgDA1d4v+QgkJxUADLU6 =NEQl -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
