Getting memory back in sync

[VulcanRidr]

I have an issue. I'm running an installation of mediawiki on an OpenVZ container, managed by Proxmox. (the CPUs don't have the VTx extensions so I can't run KVM.) In any case, I noticed that at times when I updated a page, I would get an error. I dug into the apache logs, and saw:

[Mon Dec 03 16:11:36 2012] [notice] child pid 8365 exit signal Segmentation fault (11)

When I started looking at the memory, what Proxmox is showing me differs from what the machine sees and what OpenVZ shows.

According to openvz:

102:  kmemsize                 16689012            129372160            206116305            226727936                    0

The proxmox page shows I have 1.5GB of RAM...

But the system shows different values based on free:

# free
             total       used       free     shared    buffers     cached
Mem:            -4     224768    -224772          0          0      35436
-/+ buffers/cache:     189332    -189336
Swap:            0          0          0

and top:

# top
top - 19:27:01 up 35 days,  2:01,  1 user,  load average: 0.05, 0.05, 0.00
Tasks:  50 total,   1 running,  49 sleeping,   0 stopped,   0 zombie
%Cpu(s):  0.3 us,  0.3 sy,  0.0 ni, 99.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.3 st
MiB Mem:   4194303 total,      219 used,  4194084 free,        0 buffers
MiB Swap:        0 total,        0 used,        0 free,       34 cached

What is the best way to get what the machine, the proxmox host and openvz on the same sheet of music where memory is concerned?

Thanks,
--vr