WAS大量用户同时访问时响应速度很慢

您好！OS是WINDOWS的，请问我该怎么做可以获取server的线程转储？

首先需要确认在新的环境上WAS的配置是一样的。有可能是原有环境是调优过的，比如连接池等都调整过了，但新环境没有做过相应的调优。 如果配置都是一样，那可以怀疑虚拟机给的资源不够（也可能是太多虚拟机，导致竞争）。 可以收集下javacore，看看当时系统资源是用情况。 http://www-01.ibm.com/support/docview.wss?uid=swg21454841 如何产生javacore： Manually generating javacores using Ctrl + BreakThis is useful if you want to generate normal javacores for diagnosing a problem during startup. This is the method recommended in situations where the server hangs shortly after startup. It is also recommended when other methods described above do not work, or when the system is under extremely heavy load. This method uses an alternative method for starting an application server in a mode which accepts the Ctrl + Break keyboard combination to trigger a javacore. This method requires some preparation steps, and the affected server will need to be restarted. This method has the advantage that generating javacores does not require the additional overhead of using another tool (such as the administrative console or wsadmin tool). 1. Open the command prompt. 2. Navigate to "bin" subdirectory under the server's profile root (profiles\bin) 3. From the "bin" subdirectory, execute the one of the following commands. Choose the command from the list below based on the type of server that the javacore will be generated from. Application Servers startServer.bat SERVER_NAME -ｓｃｒｉｐｔ Nodeagents startNode.bat -ｓｃｒｉｐｔ Deployment Managers (DMGR) startManager.bat -ｓｃｒｉｐｔ This will generate a ｓｃｒｉｐｔ named start_.bat in the current directory. 4. Stop the server that requires the javacore. 5. Using the new ｓｃｒｉｐｔ, start the application server (or nodeagent or deployment manager). start_ server1 .bat 6. While the server is running, from the same command prompt window, issue the keyboard combination Ctrl + Break. Output on the screen should immediately display that a javacore is being generated. 6a. Repeat step 6 as many times as required to collect javacores. 7. Note the location(s) of the javacores and collect them. They will usually be output to the current directory or the profile root. The server can be stopped either by issuing a stopServer.bat command, or terminated immediately with a keyboard combination Ctrl + C. http://www-01.ibm.com/support/docview.wss?uid=swg21138203