wordpress speed optimization?

Question

PHP

Now I'm working on increasing the loading speed of my site and found that most of the time it waits for a response from the server, and does not directly download the files. The picture shows an approximate load ratio.
What does it depend on and how can it be corrected? Or just change the host?

Answer 1

A lot of queries to the database in 1 cycle and / or heavy non-standard business logic in some plugins. Without knowing anything about the site it is difficult to say something more.
Of the standard solutions, I can recommend two that help in most cases:

1. Install any caching plugin. I personally like super cache
   
2. Take out all the statistics on the CDN. Through JetPack on Phantom, this is, in my opinion, the easiest to do (I can be mistaken)
   

Answer 2

Log the request arrival time and script response time.
If the problem is there, then you need to look at the script.
If everything is fast in the script - change the host.

Answer 3

Maybe it will help:
https://wpmag.ru/2014/profilirovanie-koda-v-wordpress/
similar to Habré: habrahabr.ru/post/78210
or:
habrahabr.ru/post/132817

Answer 4

I will answer as I think, but this is not the truth. Here is a list of restrictions:
timeweb.com/ru/help/pages/viewpage.action?pageId=4...
It seems to be too detailed and makes me think that the server was cut into a million parts and sold. Just a guess.