CloudLinux & Server Memory

[ray]

memory

[ray]

I have a question about how CloudLinux consumes system memory. Ive read through all of the comments about memory and most are related to LVEs. Nothing about this issue:

I have a server with a moderate number of high traffic websites that was hosted on a server with 4GB RAM and a 4-core processor. I needed faster i/o so I migrated to an 8GB server with a faster 4-core processor and fast disks.

Everything runs fine - the server handles the sites & traffic well. I thought this would be a good server to test CloudLinux. After installing CloudLinux, server memory use jumped from +/- 2GB to over 6GB. It seems as if every time I create a new vhost, memory use goes up by about 100MB.

Can you verify that each new LVE consumes 100GB RAM? I dont intend to put 100s of sites on this server but it seems that CloudLinux severely restricts the number of sites I can add to the server. Unless I am completely misunderstanding LVE configuration, which is possible.

Here are the server specs:

8GB RAM
4-core CPU
LiteSpeed 4.2.2
CloudLinux 6
CPanel
+/- 20 WP installs

Apache & MySQL are tuned much like the previous server (which had 4GB) and there are no performance issues.

Seems to be a lot of memory use that I cant account for. Any insights in to how CloudLinux effects system memory would be greatly appreciated.

[iseletsk]

Single LVE takes up around 120kb of RAM.
So, 1000 sites should take up around 120MB of ram.

Also, I am not sure what you mean by +/-2GB -- are you talking about disk cache / buffered memory?

[rk]

Before installing CloudLinux, the system was using about 2GB out of 8GB RAM available.

After installing CloudLinux and adding about 20 domains/websites, the system is using over 6GB RAM. Right now it is 6.5G out of 8GB system RAM. I have no caching enabled at this time.

[iseletsk]

Linux has disk caching enabled always -- you cannot disable it. I think you should read this: http://www.linuxatemyram.com/
It really sounds like you are mixing up disk caching with RAM being unavailable.

[rk]

OK, I will look that over ... thanks.

[rk]

Im a dummy. Youre absolutely right about Linux caching borrowing the RAM. Been working with virtualization too much ...