Problems with heavy load resources by POST, admin-ajax

[Andrzej13]

Hello, i have a store on alidropship, but... i have a big problem.
I have all plugins and theme updated. I have PHP 7.2 on my hosting.
I have a really good hosting, but... RAM Usage it's terrible.
There is a screen from last 24h. Now i have 4GB RAM, and when RAM reached almost the max value there were... 50 people on my website.
I add a screenshot



This is one query to the home page.

IP.139 - - [01/Aug/2019:13:51:48 +0200] "GET / HTTP/1.1" 200 27030 "-" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:64.0) Gecko/20100101 Firefox/64.0"
IP.139 - - [01/Aug/2019:13:51:49 +0200] "POST /wp-admin/admin-ajax.php HTTP/1.1" 200 433 "https://website .link/" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:64.0) GRecko/20100101 Firefox/64.0"
IP.139 - - [01/Aug/2019:13:51:49 +0200] "POST /wp-admin/admin-ajax.php HTTP/1.1" 200 22 "https://website .link/" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:64.0) GRecko/20100101 Firefox/64.0"
IP.139 - - [01/Aug/2019:13:51:49 +0200] "POST /wp-admin/admin-ajax.php HTTP/1.1" 200 700 "https://website .link/" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:64.0) GRecko/20100101 Firefox/64.0"
IP.139 - - [01/Aug/2019:13:51:49 +0200] "POST /wp-admin/admin-ajax.php HTTP/1.1" 200 254 "https://website .link/" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:64.0) GRecko/20100101 Firefox/64.0"
IP.139 - - [01/Aug/2019:13:51:49 +0200] "POST /wp-admin/admin-ajax.php HTTP/1.1" 400 21 "https://website .link/" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:64.0) GRecko/20100101 Firefox/64.0"
IP.139 - - [01/Aug/2019:13:51:49 +0200] "POST /wp-admin/admin-ajax.php HTTP/1.1" 200 241 "https://website .link/" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:64.0) GRecko/20100101 Firefox/64.0"

I have a active plugins:

Ads Countdown AliDropship Plugin
Ads Facebook Business Catalog AliDropship Plugin
Ads Google Merchant AliDropship Plugin
AliDropship Plugin
Contact Form 7
GDPR Cookie Consent Banner
Google Tag Manager for Wordpress
HTML5 Responsive FAQ
Classic Editor
LiteSpeed Cache
PromoBanner
Really Simple SSL
TablePress
WP File Manager
WP GDPR Compliance
XML Sitemap & Google News

and i need to turn off these, because usage are even bigger than before.

- Ads Abandoned Cart AliDropship Plugin
- Ads Recent Sales Pop-Up AliDropship Plugin
- AliDropship GA Enhanced eCommerce

Can somebody help me?

 

[Andrzej13]

UP

 

[bacil]

What is your DB doing at that peak? I used to have local DB as well but found out that it eats resources from webserver so I split DB on another server which saved loads of memory