Slowness Rendering a Page with the 'Section' Macro

Summary

Slowness Rendering a Page with the 'Section' Macro

Steps to Reproduce

1. Create a Page
2. Select the 'Edit' option from the top right menu
3. type ‘{section’ to bring up the section macro and select it
4. Enter information in the ‘Section’ macro. (I saw the degradation grow as multiple items were added, but over 100 items is very noticeable)
5. Save the page (should be slow)
6. Navigate away and back to the page (should be slow)

If the same information is entered on a page without the section macro, it renders without speed degradation.

Expected Result

The page would render normally and not take a noticeable amount of time to do so

Actual Result

• The page takes a noticeable amount of time to render
• In Confluence Cloud any text that does not render within a section column within 60 seconds will be truncated from the page (Location of text is random within document)
  • Effects are compounded if using firefox with FireBug enabled

Environment

Confluence 5.4.4

Other Notes

• I have attached a Storage format of a page that has many items (so that it is easier to recreate by adding through source editor)
• If you remove the data from the Section macro, the page renders very quickly. That is reason for submitting this as a bug as it seems to be an issue with the ‘Section’ Macro itself
• Only tested on Confluence 5.4.4 and 5.6.3. Issue is present in both.