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Hi
Something I have never seen before is happening on one of my sites…
When I am navigating around my admin back-end doing simple tasks like editing posts, navigating to plugins, running back-ups etc. It is really, really slow. Things that would take 2secs take 30secs or do not load at all.
Some pages never load and give a message saying “This page isn’t working \_\_\_\_\_\_.com didn’t send any data. ERR\_EMPTY\_RESPONSE”. Whilst this happens I get messages from my uptime monitoring saying the site is down.
What might be causing this please and what can I do to resolve it?
Thank you.
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Gonna need to install Query Monitor and check slow queries and PHP errors etc. also take a look at your servers error logs. Because so many things can make the back end slow, it’s nearly impossible for use to diagnose without additional info.
Edit: I will note if you’re using elementor you might try switching the loading method which might allow you to proceed. But again more info is really needed.
A million things could be causing this, so I’m just gonna throw out one odd thing that was causing this on lots of my sites:
Check if opcache is enabled in your PHP modules via your hosting control panel. You should have it enabled. It specifically improves back-end performance.
All my sites were slow in admin all of a sudden, and it turned out that opcache got disabled somehow. Re-enabling it fixed everything.