Query Monitor プラグイン
https://ja.wordpress.org/plugins/query-monitor/
【開発者必須】Query Monitor の使い方(おすすめWordPressプラグイン) | push.tokyo
WordPress 6.2.2 管理画面で最大メモリ使用量10MB弱
plugintests.com
Performance
Memory usage: 2.43 MiB
The average PHP memory usage increased by this amount after activating by the plugin.
Page speed impact: 0.464 seconds
The average page load time increased by this amount after activating the plugin.https://plugintests.com/plugins/wporg/all-in-one-seo-pack/latest