FreeKB - Analyze WebSphere garbage collection logs (native_stderr.log native_stdout.log) using Garbage Collection and Memory Visualizer
Analyze WebSphere garbage collection logs (native_stderr.log native_stdout.log) using Garbage Collection and Memory Visualizer

Home > Search


This assumes you have enabled verbose garbage collection. IBMs Garbage Collection and Memory Visualizer can be used to analyze the garbage collection logs (native_stderr.log, native_stdout.log).

In the Garbage Collection and Memory Visualizer tool, select File > Load File. Select the native_stderr.log or native_stdout.log file you will like to analyze. After the log has been parsed, you will be on the Line plot tab and a graph displaying the garbage collection cycles will be displayed. If No data parsed from sources is displayed, this means the log file being loaded is not a valid log file.

 

At the bottom of the GUI, select the Report tab. This will display tuning recommendations (recommendations is the key word here - the recommendations require contemplation to conclude if the recommendation makes sense) and a summary.

 

Following are the steps for known recommendations.

 

It is usually a good idea to compare at least a few of the log's, to see if the tuning recommendations in each log are similar or different. And, it is a best practise to rotate the native_stderr.log and native_stdout.log.

 



Add a Comment




We will never share your name or email with anyone. Enter your email if you would like to be notified when we respond to your comment.




Please enter a2b30 in the box below so that we can be sure you are a human.




Comments