• Forums
    • Public Forums
      • Community Connect
      • Dynatrace
        • Dynatrace Open Q&A
      • Application Monitoring & UEM
        • AppMon & UEM Open Q&A
      • Network Application Monitoring
        • NAM Open Q&A
  • Home /
  • Public Forums /
  • Application Monitoring & UEM /
  • AppMon & UEM Open Q&A /
avatar image
Question by Pierre D. · Jul 04, 2014 at 10:35 PM ·

Thread Dump Analysis: explanation

Hi,

 

I would like to get some explanation about Thread Dump analysis:

 

if I group the threads by status, I can see the status (eg. Waiting), the number of thread in this status and the CPU Time.

What does it means ?

For instance :

Waiting -33 threads - 9046.49 ms

Time Waiting - 6025 threads -78960 ms

Runnable - 31 threads - 35000 ms

 

What means thread in status waiting use 9046.49 ms of CPU time ? Does it means that in this status, CPU spend 9046 ms to handle them ?

Furthermore for status Runnable I saw some thread processing  code, in the documentation it is written that runnable means ready to run.

Thanks

Pierre

 

Comment

People who like this

0 Show 0
10 |2000000 characters needed characters left characters exceeded
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 10 attachments (including images) can be used with a maximum of 50.0 MiB each and 250.0 MiB total.

1 Reply

  • Sort: 
  • Most voted
  • Newest
  • Oldest
avatar image

Answer by Andreas G. · Jul 07, 2014 at 05:41 PM

Hi

The status of a thread is the state it was in at the time when you took the thread dump. The CPU Time is the total CPU Time this thread consumed since the thread was created. In your case it means that the 33 threads that are CURRENTLY in wait consumed 9s of CPU Time since these threads got created.

As for runnable: it means that these threads are ready to execute or are currently executing code. If the way it is documented is confusing we are happy to change that

Andi

Comment
Naveen M.
ramesh m.

People who like this

2 Show 0 · Share
10 |2000000 characters needed characters left characters exceeded
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 10 attachments (including images) can be used with a maximum of 50.0 MiB each and 250.0 MiB total.

How to get started

First steps in the forum
Read Community User Guide
Best practices of using forum

NAM 2019 SP5 is available


Check the RHEL support added in the latest NAM service pack.

Learn more

LIVE WEBINAR

"Performance Clinic - Monitoring as a Self Service with Dynatrace"


JANUARY 15, 3:00 PM GMT / 10:00 AM ET

Register here

Follow this Question

Answers Answers and Comments

1 Person is following this question.

avatar image

Forum Tags

dotnet mobile monitoring load iis 6.5 kubernetes mainframe rest api dashboard framework 7.0 appmon 7 health monitoring adk log monitoring services auto-detection uem webserver test automation license web performance monitoring ios nam probe collector migration mq web services knowledge sharing reports window java hybris javascript appmon sensors good to know extensions search 6.3+ server documentation easytravel web dashboard kibana system profile purelytics docker splunk 6.1 process groups account 7.2 rest dynatrace saas spa guardian appmon administration production user actions postgresql upgrade oneagent measures security Dynatrace Managed transactionflow technologies diagnostics user session monitoring unique users continuous delivery sharing configuration alerting NGINX splitting business transaction client 6.3 installation database scheduler apache mobileapp RUM php dashlet azure purepath agent 7.1 appmonsaas messagebroker nodejs 6.2 android sensor performance warehouse
  • Forums
  • Public Forums
    • Community Connect
    • Dynatrace
      • Dynatrace Open Q&A
    • Application Monitoring & UEM
      • AppMon & UEM Open Q&A
    • Network Application Monitoring
      • NAM Open Q&A