Orientador de Desempenho e Diagnóstico

Use this topic to understand the functions of the Orientador de Desempenho e Diagnóstico.

The Orientador de Desempenho e Diagnóstico provides advice to help tune systems for optimal performance and is configured using the WebSphere® Application Server administrative console or the wsadmin tool. Running in the Java™ virtual machine (JVM) of the application server, the Orientador de Desempenho e Diagnóstico periodically checks for inefficient settings and issues recommendations as standard product warning messages. These recommendations are displayed both as warnings in the administrative console under Runtime Messages in the WebSphere Application Server Status panel and as text in the application server SystemOut.log file. Enabling the Orientador de Desempenho e Diagnóstico has minimal system performance impact.

Note: Esse tópico faz referência a um ou mais arquivos de log do servidor de aplicativos. Como uma recomendação alternativa, é possível configurar o servidor para usar a infraestrutura de log e rastreio do High Performance Extensible Logging (HPEL) em vez de usar os arquivos SystemOut.log , SystemErr.log, trace.log e activity.log em sistemas distribuídos e IBM® i. Também é possível usar HPEL em conjunção com os recursos de criação de log z/OS® nativos. Se você estiver usando HPEL, será possível acessar todas as informações de log e rastreio usando a ferramenta de linha de comandos LogViewer a partir do diretório bin do perfil do servidor. Consulte as informações sobre a utilização do HPEL para resolução de problemas dos aplicativos para obter mais informações sobre o uso do HPEL.

The Performance and Diagnostic Advisor provides performance advice and diagnostic advice to help tune systems for optimal performance, and also to help understand the health of the system. It is configured using the WebSphere Application Server administrative console or the wsadmin tool. Running in the Java virtual machine (JVM) of the application server, the Performance and Diagnostic Advisor periodically checks for inefficient settings and issues recommendations as standard product warning messages. These recommendations are displayed as warnings in the administrative console under Runtime Messages in the WebSphere Application Server Status panel, as text in the application server SystemOut.log file, and as Java Management Extensions (JMX) notifications. Enabling the Performance and Diagnostic Advisor has minimal system performance impact.

From WebSphere Application Server, Version 6.0.2, you can use the Orientador de Desempenho e Diagnóstico to enable the lightweight memory leak detection, which is designed to provide early detection of memory problems in test and production environments.

The advice that the Orientador de Desempenho e Diagnóstico gives is all on the server level. The only difference when running in a WebSphere Application Server, Network Deployment environment is that you might receive contradictory advice on resources that are declared at the node or cell level and used at the server level.

For example, two sets of advice are given if a data source is declared at the node level to have a connection pool size of {10,50} and is used by two servers (server1 and server2). If server1 uses only two connections and server2 uses all fifty connections during peak load, the optimal connection pool size is different for the two servers. Therefore, the Orientador de Desempenho e Diagnóstico gives two sets of advice (one for server1 and another for server2). The data source is declared at the node level and you must make your decisions appropriately by setting one size that works for both, or by declaring two different data sources for each server with the appropriate level.

Read the using the performance and diagnostic advisor information for startup and configuration steps.


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