• 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 Sandhya S. · Feb 25, 2014 at 03:26 PM ·

Unable to trace the webrequest during loadtesting for more than 100 users

Hi,

We are unable to trace the web request (submit request) during the load testing for 100 users for our PHP application. We were able to get the same for < 100 users

During the load test , hits per second and throughput showing zero from second round in WebLOAD tool(Load testing tool) But we were not able to trace the same in DynaTrace the reason for the zero value.Have monitored the memory, CPU, Network utilization during the execution, its showing all are OK,

Please help us in letting know in troubleshooting the issue

 

 

Thanks,

Sandhya

 

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.

4 Replies

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

Answer by Sandhya S. · Feb 27, 2014 at 12:03 PM

Hi Andreas,

We have seen Network and Disk metrics one day back  Since yesterday only , we are not getting  the in the host monitoring page/dashlets.

Thanks,

Sandhya

 

 

Comment

People who like this

0 Show 1 · 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.

avatar image Andreas G. ♦ · Feb 27, 2014 at 12:57 PM 0
Share

Were the agents restarted in that timeframe? Can you have a look at the agent log files and see if there is any indication of a problem getting these counters? Last resort is also to open a support ticket

avatar image

Answer by Sandhya S. · Feb 27, 2014 at 10:20 AM

Hi,

No errors and request timeouts were observed during the execution.
a)There is no restrictions in test environment reg. load . If any , web load will definitely  intimate.
b)There is no load balancer. we have monitored the webserver health during the run . Its shows Ok (CPU , Memory , network ,Disk utilization). But we need to check the health of Proxy server.

From today, We observed that during monitoring there is no network and disk utilization. Both are unavailable.
Please let us know in which cases it will happen like this.

Attached is the screenshot for your perusal.

And please let us know what is the threads, Max threads what is the threshold values how to analyze the performance metrices

 

Health of webserver.jpg

Comment

People who like this

0 Show 1 · 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.

avatar image Andreas G. ♦ · Feb 27, 2014 at 10:36 AM 0
Share

It means that the agents that run on that linux box dont have the prvilidges to capture these types of metrics. Please check out the following doc page that describes what types of metrics we capture and what privilidges we need: Host Health Monitoring

avatar image

Answer by Manohara K. · Feb 26, 2014 at 05:04 AM

Hi Andreas,

Zero Value means, the value for hits per second and throughput in the webload  were showing 0(i.e throughput=0). ideally there was nothing happening in the application. We were not sure the reason for showing 0 and when we checked the same time in dynaTrace for pure path and health status of server, we did not see any errors.

the scenario was to test the web service call with 100 users to check the performance/behavior, initially it was running fine, later after 5 mins, there was no data getting populated for hits per second and throughput , Which we wanted to analyze thru dynaTrace and were unable to fine the root cause 

 

Thanks,

Manohara KS

Comment

People who like this

0 Show 1 · 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.

avatar image Andreas G. ♦ · Feb 26, 2014 at 09:07 AM 0
Share

Okay - so - your load testing tool is actually telling you that after 5 minutes no requests are handled any more. Are there no errors? Are these requests timing out? Or are these requests coming back with HTTP 5xx?

I have the following "explanations" for this scenario

a) WebLoad is not telling you all there is to say, e.g: there are actually problems with the load generators that cant generate more load due to restrictions in your test environment. I would think that WebLoad would report these types of enviromental issues

b) All these requests are quened in a component that sits before the AppServer (thats where dynaTrace is installed). That could be a Load Balancer, Proxy or Web Server. Have you checked the performance statistics on these components? what do you see there?

I my load testing tool would tell me that Requests drop to ZERO I would first look at the details on why the load testing tool cant execute these requests. I am sure it is still trying but failing to do so. First task should be to find out what happens with these requests.

avatar image

Answer by Andreas G. · Feb 25, 2014 at 03:30 PM

Hi

Can you explain in more detail what you mean with "zero value"? I am not sure I understand. Where do you see that value? Or do you mean that you dont see any (=ZERO) PurePaths once you hit the 100 users in WebLoad?


 

Comment

People who like this

0 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

2 People are following this question.

avatar image 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