Performance issues

To run a profiler:

For the browser,

• Search (double shift) for Registry, and enable pdf.viewer.debug (you can search)
• right-click on the pdf and open devtools, or search (double shift) for "Open DevTools"
• Go to the performance tab
• Start a recording
• Reproduce the performance issue
• Stop the recording
• Click 'save profile'

For the backend, with a jvm profiler:

• Install VisualVM using your package manager or go to https://visualvm.github.io/
• Start IntelliJ
• Start VisualVM.
• In the Applications panel on the left, identify the correct instance of IntelliJ
• Go to the Sampler tab.
• Click CPU to start profiling
• Reproduce the performance issue
• Stop the profiling
• Take a Snapshot to view and save results.
• Now you can zip the nps file and upload it here on GitHub.