Memory question

[somewhat]

I'm running Plesk 10.2 (psa v10.2.0_build1011110331.11 os_Ubuntu 10.04) on a vitalized dedicated server. The server has 8Gb of RAM, but in the Plesk panel I'm getting:

Real memory usage 74.3% used (1.42 GB of 1.92 GB)
Swap usage 0% used (0 B of 5.61 GB)

When I enter free -t -m in the terminal I get:

total used free shared buffers cached
Mem: 5840 5359 481 0 811 2924
-/+ buffers/cache: 1623 4216
Swap: 5747 0 5747
Total: 11588 5359 6229

Why is only 1.92Gb showing up in Plesk? Have I set up something wrong or am I misinterpreting it?
Any advise appreciated!!

 

[IgorG]

Is it Virtuozzo Container? Actually it is not Plesk issue but it is related to speciality of memory allocation in virtual environments.

 

[somewhat]

I'm not sure, I'll have to check. How much memory should be showing up in Plesk though? Should all 8Gb be showing if I've set it up correctly?
Thank

 

[somewhat]

We use VMware vSphere 5 as our hypervisor