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Chrome extension brings page load to a halt on 400-file PR

Created by: byrongrogan

  • Sourcegraph version: 3.60, extension version 19.7.18.1116

  • Platform information: OSX, Chrome 75.0.3770.142

Steps to reproduce:

  1. Load a very large PR (issue observed on 400-file PR)
  2. Scroll down to check out the files

Expected behavior:

Files load normally, code intelligence works, etc.

Actual behavior:

Tab slows to a halt after ~60 code views have been loaded. Full page load takes >5 minutes and sometimes crashes.

I have a profile from one case that I'll send along via e-mail (since it contains some PII).

Note: If there are hard limits that make it impossible for this to be a good user experience, it would be better to simply make the extension a no-op on PRs this large. Currently people have to uninstall the chrome extension entirely to be able to work with certain very large PRs.