Viewing the 效能和診斷顧問 recommendations

Runtime Performance Advisor uses Performance Monitoring Infrastructure (PMI) data to provide recommendations for performance tuning.

About this task

The 效能和診斷顧問 uses Performance Monitoring Infrastructure (PMI) data to provide recommendations for performance tuning. Running in the Java™ virtual machine (JVM) of the application server, this advisor periodically checks for inefficient settings, and issues recommendations as standard product warning messages.

Procedure

The 效能和診斷顧問 recommendations are displayed in two locations:
  1. The WebSphere® Application Server SystemOut.log log file.
  2. The Runtime Messages panel in the administrative console. To view this administrative page, click Troubleshooting > Runtime Messages > Runtime Warning.

Example

The following log file is a sample output of advice on the SystemOut.log file:
[4/2/04 15:50:26:406 EST] 6a83e321 TraceResponse W CWTUN0202W: 
Increasing the web container thread pool Maximum Size to 48 
might improve performance. 

Additional explanatory data follows.

Average number of threads: 48.

Configured maximum pool size: 2.

This alert has been issued 1 time(s) in a row. 
The threshold will be updated to reduce the 
overhead of the analysis.
Note: 這個主題參照一或多個應用程式伺服器日誌檔。 此外,在分散式和 IBM® i 系統上,另外也建議您可以配置伺服器來使用「高效能可延伸記載 (HPEL)」日誌和追蹤基礎架構,而不使用 SystemOut.logSystemErr.log, trace.logactivity.log 檔案。HPEL 與原生 z/OS® 記載機能也可以一起使用。如果您使用 HPEL,則可以從伺服器設定檔 bin 目錄,利用 LogViewer 指令行工具來存取您所有的日誌和追蹤資訊。請參閱有關利用 HPEL 疑難排解應用程式的資訊,以取得更多使用 HPEL 的相關資訊。

指出主題類型的圖示 作業主題



時間戳記圖示 前次更新: July 9, 2016 11:16
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