Loading sites too slow - CPU Load and Memory too high - IO Performance in Proxmox 4.2

I think I've found the source of the problem.

It's related to Proxmox 4.2 and Linux Containers.

Doing some more testing I found out that an import of a dump sql gets more than 7 minutes with a cpu load of 4,50 (last minute) in the Virtual Container.

The same import in an openvz container with other host with Proxmox 3 gets 8 seconds.

For those with the same problem... I found two posts regarding to this problem
They talk about the I/O write speed.
https://forum.proxmox.com/thre…-the-lxc-container.25773/
https://forum.proxmox.com/thre…grade-to-proxmox-4.25128/

I've not tested yet the solutions proposed there. I'll write back with my experiences.

Finally I made the necessary changes in Proxmox configuration for this issue.

See this: https://forum.proxmox.com/thre….26012/page-3#post-142829

The problem was related with the IO performance.

The LXC containers must be configured as chroot format and it's needed to make some changes un the fstab file where the MVs are stored.