A new OPcache card in the Performance tab shows the health of your PHP bytecode cache in real time.
What you can see
- Hit rate - percentage of PHP requests served from cache vs. compiled fresh
- Memory usage - how much of your OPcache allocation is in use
- Cached scripts - total number of PHP files currently cached
- Cache full events - how often OPcache runs out of space and needs to evict entries
A healthy OPcache means faster page loads. If your hit rate drops below 95% or cache full events spike, try increasing opcache.memory_consumption from your PHP settings.