My site is extremely slow. and I checked the process list via "top" command, and the php-cgi (probably Wordpress) is really consuming a lot of memory. So our last resort is to upgrade from 1GB to 4GB. However, I got this warning:
Upgrading your server to a larger size will require us to restart your server, which could take up to 3 minutes. In addition, we may be required to migrate your server to another host server, which could delay the upgrade up to 3 hours and cause your server to be stopped for up to 30 minutes.
How risky it is? We already created a backup.
So if it's gonna be migrated to another host server, will it affect the domain?
Does Upgrading RAM really accelerates the wordpress a little bit?
I see you have been having some issues isolating WordPress performance issues which isn't uncommon. Good news is there are a few things that can be done by you to optimize things before doing an server upgrade.
Review this list after making a backup:
- Updated your Theme/plugins/wordpress
-Run a malware scan (hackers use your available resources)
-Implement a CDN(Content Delivery Network)(https://www.godaddy.com/web-security/website-security)
-Optimize database (GoDaddy Service (Optimize database on the service list))
Here is an article written by Stephani Worts on the topic of optimization (https://www.godaddy.com/garage/quick-tips-to-optimize-wordpress-site-load-time/)
I hope this is helpful before upgrading your server to something bigger.
Have an awesome day and good luck with your Site!