We have just upgraded from Magento 1 to Magento 2 and switched to a new dedicated Linux server. Everything is running very slowly with very high CPU load. We already did all the basic optimization as suggested by Magento but the load is still so high and we can not even save some products without it timing out. While CPU load is high, RAM memory usage seems low. It seems the RAM is not being used efficiently. We are using Litespeed with Litemage Magento cache and also Cloudflare so it should be running quickly so there must be some bottleneck somewhere or some misconfiguration.
We need someone with advanced server configuration knowledge and experience as the basic things like caching and some SQL optimization have already been done.
Dell PowerEdge R620
- 2 x Intel Octa-Core Xeon E5-2640v2, 2.0 GHz
- 6 x 500GB SSD
- 192GB DDR3 RAM
- Hardware RAID 10
- Linux CentOS v7.x
- cPanel/WHM Premier Metal
- Litespeed commercial with Litemage cache.