How to Handle the load on jira application

[Srikanth Gogineni]

Hi All,

I have been facing high cpu usage and i see the load on CPU ( consuming high cpu usage ) when multiple users are trying to create/requests(  using clone-plus plugin ) at a time .

 Jira version is : 6.2.7

No of Active users : 150 

connection pool max size is 150

max idle size is 80 

JVM memory = 18GB ( out of total RAM 32 GB) 

Could anyone help on controlling the high cpu usage .

Regards

[KellyW]

Hi Shrikanth,

There are other factors to assess and consider to fine tune the server resources allocation for JIRA application, e.g: custom fields, third-party add-ons etc.

Going forward, I would suggest identifying the cause of the CPU spike before we plan ahead:

• Enable GC logging as illustrated in this KB -- How to Enable Garbage Collection (GC) Logging
• Generate thread dumps and CPU dumps when CPU usage spikes: 
  

  for i in $(seq 6); do top -b -H -p $pid -n 1 > app_cpu_usage.date +%s.txt; kill -3 $pid; sleep 10; done

  
  Make sure you change $pid to the process ID of running Jira, before running this command
• Open a Support ticket with JIRA Server Support -- with the support.zip and app_cpu_usage files

Regards,
Kelly

[Srikanth Gogineni]

Hi Kelly,

Sorry for the delay in reply .. i have gone though the logs and observed that the CPU usage is getting high when Clone-plus plugin is being used ,which copies the existing issue along with sub tasks( min of 10) and CPU goes high when multiple users ( 2 or 3 ) try to use clone-plus at a time .

our jira version(6.2.7) licence is expired and so the plugin cannot be updated to next version until jira is upgraded.

Please help if there is a way( workaround ) to fix the issue.

Let me know if any other details are required.

Thanks in Advance 

Regards

[KellyW]

Hi Srikanth,

If you have confirmed that the third-party plugin cause the CPU spike, it's worth engaging the third-party vendor Support to look into the issue as it might be a known issue pertain to the release you are running on.

Regards,
Kelly

[Srikanth Gogineni]

Hi Every one,

I have been facing the high CPU usage again even after increasing the Jira instance memory to 32GB ( total 64 GB). still we are facing the High CPU usage and application outage.

Can any one suggest on reducing the High CPU usage ?

[Srikanth Gogineni]

Below are the connection pool details.

<pool-min-size>100</pool-min-size>
<pool-max-size>100</pool-max-size>
<pool-max-wait>60000</pool-max-wait>
<pool-max-idle>100</pool-max-idle>
<pool-remove-abandoned>true</pool-remove-abandoned>
<pool-remove-abandoned-timeout>300</pool-remove-abandoned-timeout>

Regards

Srikanth