Whole Jira or BigPicture is slow

In case of contacting our Support Team via our portal or e-mail for the first time, please remember to:

• Describe a problem in detail.

• Collect the required data (described below) and attach it to the request.

• Provide an exact timestamp when a problem occurred. 

Problem

You notice low performance throughout the Jira and BigPicture (high usage of server resources, e.g., high CPU usage), or the whole Jira system does not respond.

Required data to collect and send to the Support Team:

• Jira logs

• Fine-grained logs

• Thread dumps 

If Jira or BigPicture is unresponsive and you cannot access the App Configuration > Advanced > Technical info page to generate thread dumps, you can create thread dumps using the commands:

For  jstack installed:

1. When you notice a performance problem, you can Identify the Jira application PID by using a command:

   JIRA_PID=`ps aux | grep -i jira | grep -i java | awk -F '[ ]*' '{print $2}'`;

    

2. Run the following command - it generates ten snapshots of CPU usage and thread dumps with 10-second intervals for a minute. You must have a JDK installed for the jstack command to work.

   for i in $(seq 10); do top -b -H -p $JIRA_PID -n 1 > jira_cpu_usage.`date +%s`.txt; jstack -l $JIRA_PID > jira_threads.`date +%s`.txt; sleep 10; done

   
   
   

3. Compress generated jira_cpu_usage.txt and jira_threads.txt files and send them to our Support Team.

No jstack installed:

1. If you do not have jstack installed, use the following command when you notice a performance problem:
   This command generates ten snapshots of CPU usage and thread dumps with 10-second intervals.
   
   

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

   When "kill -3" is used, the thread dump is sent to the standard error stream. If you run your application in tomcat, the thread dump will be sent into <TOMCAT_HOME>/logs/catalina.out file, which is usually attached to the Jira support zip.

2. Compress generated jira_cpu_usage.txt files and send them to our Support Team with the Jira support zip file.