How to check total RAM memory available in a VPS in *realtime* .. ?

[ahmadka]

Hi guys .. I recently purchased a VPS, and on paper its supposed to give me 1 GB of dedicated memory and another 1 GB of burstable memory ... So at any given time, the total amount of memory that should be available to me should be between 1 GB and 2 GB, right ? Correct me if I'm wrong ..

How can I check this from within my Ubuntu VPS ? So that I know I'm getting what I'm paying for ..

ahmadka Reviewed by ahmadka on 24th Jul 2011. How to check total RAM memory available in a VPS in *realtime* .. ? Hi guys .. I recently purchased a VPS, and on paper its supposed to give me 1 GB of dedicated memory and another 1 GB of burstable memory ... So at any given time, the total amount of memory that should be available to me should be between 1 GB and 2 GB, right ? Correct me if I'm wrong .. How can I check this from within my Ubuntu VPS ? So that I know I'm getting what I'm paying for .. Rating: 5

[futureawesome]

free -m
top
etc

You can't technically know how much the host server has as most vps software doesn't show the total ram.

[Aquickhost]

you should have a vps panel like virtuzzo, solusvm, where u can check total ram used.

from command line : top , free etc.

[ahmadka]

Well, the reason why I think I'm running low on memory is because when I have a VPN session on and I type in 'java' (needed for jDownloader) in the console, I get the following error:

Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.

However, if I restart the VPS and do not start the VPN service, and instead just login through ssh again and type in java, I get the correct response (all java parameters listed, etc) ...

So how can check this out ?

I tried to use 'free', and the output I get is this:

root@server1:~# free
total used free shared buffers cached
Mem: 4294967292 190300 4294776992 0 0 51608
-/+ buffers/cache: 138692 4294828600
Swap: 524288 0 524288
root@server1:~#

And I'm not really sure what this means ..

[Lock Down]

I can't say for sure but looks like the server has 4 gig and all of it is being used in a shared pool with a swap file of only 512kb. In my opinion swap file should be at least same size as available ram. It also should be 4 gig.

SO I would guess and say that you are being cheated and not getting 1 gig dedicated.

Top should give you what is running on your vps and how much memory is used for each program. Add it up and see what is the total .

What does top show when you get the memory error AND what does top show after you reboot?

[ahmadka]

I can't say for sure but looks like the server has 4 gig and all of it is being used in a shared pool with a swap file of only 512kb. In my opinion swap file should be at least same size as available ram. It also should be 4 gig.

SO I would guess and say that you are being cheated and not getting 1 gig dedicated.

Top should give you what is running on your vps and how much memory is used for each program. Add it up and see what is the total .

What does top show when you get the memory error AND what does top show after you reboot?

Actually the swap file is 512 MB, not 512 KB ..

I tried using 'top' but I don't know how to see ALL apps I'm running in one view, so that I can add their total memory used ..


Its quite surprising there's no easy way to check this in linux, of all OSes ... I thought this would be pretty easy to do ..

[kris]

To check free memory in Megabytes

free -m

minus the cached memory from used RAM to get original RAM usage.

You can use

top

to get system monitor and hit Shift+M (capital M) to get processes ordered by RAM usage.

You can also use

ps aux

to get all processes list.

Regards

[masterb56]

I heard Jdownloader uses too much ram on 64 bit Linux Os'

[ClonerXP]

Hi guys .. I recently purchased a VPS, and on paper its supposed to give me 1 GB of dedicated memory and another 1 GB of burstable memory ... So at any given time, the total amount of memory that should be available to me should be between 1 GB and 2 GB, right ? Correct me if I'm wrong ..

How can I check this from within my Ubuntu VPS ? So that I know I'm getting what I'm paying for ..

mira el manueal