I am using the out of the box configuration for logging. I did a search of my logging.properties and didn't find buffersize. Here 'tis.
# Licensed to the Apache Software Foundation (ASF) under one or more # contributor license agreements. See the NOTICE file distributed with # this work for additional information regarding copyright ownership. # The ASF licenses this file to You under the Apache License, Version 2.0 # (the "License"); you may not use this file except in compliance with # the License. You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. handlers = 1catalina.org.apache.juli.FileHandler, 2localhost.org.apache.juli.FileHandler, 3manager.org.apache.juli.FileHandler, 4host-manager.org.apache.juli.FileHandler, java.util.logging.ConsoleHandler .handlers = 1catalina.org.apache.juli.FileHandler, java.util.logging.ConsoleHandler ############################################################ # Handler specific properties. # Describes specific configuration info for Handlers. ############################################################ 1catalina.org.apache.juli.FileHandler.level = FINE 1catalina.org.apache.juli.FileHandler.directory = ${catalina.base}/logs 1catalina.org.apache.juli.FileHandler.prefix = catalina. 2localhost.org.apache.juli.FileHandler.level = FINE 2localhost.org.apache.juli.FileHandler.directory = ${catalina.base}/logs 2localhost.org.apache.juli.FileHandler.prefix = localhost. 3manager.org.apache.juli.FileHandler.level = FINE 3manager.org.apache.juli.FileHandler.directory = ${catalina.base}/logs 3manager.org.apache.juli.FileHandler.prefix = manager. 4host-manager.org.apache.juli.FileHandler.level = FINE 4host-manager.org.apache.juli.FileHandler.directory = ${catalina.base}/logs 4host-manager.org.apache.juli.FileHandler.prefix = host-manager. java.util.logging.ConsoleHandler.level = FINE java.util.logging.ConsoleHandler.formatter = java.util.logging.SimpleFormatter ############################################################ # Facility specific properties. # Provides extra control for each logger. ############################################################ org.apache.catalina.core.ContainerBase.[Catalina].[localhost].level = INFO org.apache.catalina.core.ContainerBase.[Catalina].[localhost].handlers = 2localhost.org.apache.juli.FileHandler org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/manager].level = INFO org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/manager].handlers = 3manager.org.apache.juli.FileHandler org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/host-manager].level = INFO org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/host-manager].handlers = 4host-manager.org.apache.juli.FileHandler # For example, set the org.apache.catalina.util.LifecycleBase logger to log # each component that extends LifecycleBase changing state: #org.apache.catalina.util.LifecycleBase.level = FINE # To see debug messages in TldLocationsCache, uncomment the following line: #org.apache.jasper.compiler.TldLocationsCache.level = FINE Note that I'm not unhappy with the logging setting, but sometimes, I need the logs now to debug a problem. I'd just like to be able to tell it to dump the buffer to file. It sounds like there's no way to do that with the default logger. -----Original Message----- From: Daniel Mikusa [mailto:dmik...@vmware.com] Sent: Wednesday, November 30, 2011 11:46 AM To: Tomcat Users List Subject: Re: Logging On Wed, 2011-11-30 at 07:01 -0800, Thom Hehl wrote: > When running Tomcat 7.0.20 as a daemon, it doesn't appear to be writing > the logs to the file until tomcat is stopped. Is there some way I can > make tomcat dump the logs it's holding onto? > Just a guess, but it sounds like it could be buffering. "org.apache.juli.FileHandler supports buffering of the logs. The buffering is not enabled by default. To configure it, use the bufferSize property of a handler. The value of 0 uses system default buffering (typically an 8K buffer will be used). A value of <0 forces a writer flush upon each log write. A value >0 uses a BufferedOutputStream with the defined value but note that the system default buffering will also be applied." https://tomcat.apache.org/tomcat-7.0-doc/logging.html It's hard to tell exactly though, without seeing your logging configuration. Please try including your logging.properties (assuming you are using the Java logging), so that we can all see it. Dan