A system administrator suspects that the slow performance of an application might be caused by
lock contention.
To debug this further, what can the administrator do using IBM Support Assistant?
A.
Analyze the running server using IBM Monitoring and Diagnostic Tools for Java -Health center.
B.
Collect a javacore and analyze it using IBM Monitoring and Diagnostic Tools for Java – Health
Center.
C.
Collect three thread dumps at equal time intervals and analyze them using IBM Monitoring and
Diagnostic Tools for Java – Dump Analyzer.
D.
Collect three system dumps at equal time intervals and analyze them using IBM Monitoring and
Diagnostic Tools for Java – Memory Analyzer.
C
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hello Was, I am going to follow your answers and you have given some corrected answers for selected questions….and for some of questions you have not given the answers it means that all other has correct answers..please reply
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correct answers for all plsssssssssss
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was…..Please help with correct answers for all
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The answer is A, for teh below reason
IBM Monitoring and Diagnostic Tools for Java – Health Center
Used for monitoring the status of a running IBM Java Virtual Machine (JVM):
•Identify if native or heap memory is leaking
•Discover which methods are taking most time to run
•Pin down I/O bottlenecks
•Visualize and tune garbage collection
•View lock contentions
•Analyze unusual WebSphere Real Time events
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I think the correct answer is C
“the analysis will attempt to localise the problem and if successful will produce a diagnosis of the error together with sufficient information to fix it or suggestions on how to continue the analysis using other tools”
http://www-01.ibm.com/support/knowledgecenter/SSAW57_8.0.0/com.ibm.java.diagnostics.dbda.isav4.doc/docs/overview.html?cp=SSEQTP_8.0.0&lang=en
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Ans is A only. Refer the bellow URL:
http://www-01.ibm.com/support/docview.wss?uid=swg27036217
Health Center
What it’s used for: Monitoring the status of a running IBM Java Virtual Machine (JVM) to help you:
Identify if native or heap memory is leaking
Discover which methods are taking most time to run
Pin down I/O bottlenecks
Visualize and tune garbage collection
View lock contentions
Analyze unusual WebSphere Real Time events
Description: The IBM Monitoring and Diagnostic Tools for Java – Health Center is a lightweight tool that monitors active IBM Virtual Machines for Java with minimal performance overhead. The Health Center suggests live tuning recommendations for Garbage Collection, profiles methods including call stacks, and highlights contended locks. This information can help you optimize performance, improve stability and optimize system resource usage.
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Thanks
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A or C? Hmmm…
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You can use A or C to analize it. But answer A is more complete.
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look “A” to me
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A
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I chose A. Thread dump is not enough to get all the clues which caused server running slow.
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C: There is no better way than three thread dumps with equal time intervals.
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A only
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C is not correct since Dump Analyzer is used to analyze system dumps (after being formatted with jextract).
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A: is correct
http://www-01.ibm.com/support/docview.wss?uid=swg27036217#healthcenter
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finally what is the correct answer please?
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