I'm running Win 7 on 3G ram on my host machine

I need to open an Ubuntu 10.04 VM in VMWare 7 and it needs to stay open for whole day for accessing some sites and connections.

I won't serve anything, just uses putty and sometimes firefox.

I run it on 256 MB but did anyone managed to run it under this. I don't know too much about linux and its deamons.

How can i disable them and which are useless for me ? for example i can see that evolution related deamon is running but i did not open it ever.

  • 256MB short be working very well. 512MB would be better, especially if you're using FF. You can also look at Xubuntu and Lubuntu which are a little more lightweight then Ubuntu itself. Also, I wouldn't bother too much about running services...my system has right after login a memory usage of ~170MB.
    – Bobby
    Commented Jul 21, 2010 at 9:14

2 Answers 2


The official minimum recommended RAM for a desktop system is 512Mb though I have run 9.04 on an old physical machine with only 384Mb and it was slow but just about acceptable (my main machine was playing up so I used the old machine as an emergency measure to get some mail read+sent and a document thrown together).

Below 512Mb the OS will be using swap space, but in a VM environment reading back from swap may be an operation that reads the data from the hosts cache rather then the physical disk (and if you have the "optimise for speed" rather than "optimise for safety" option on writing to swap will be buffered too) so you can get away with giving the VM less RAM such as the 256Mb you quote as long as you are fine with it possible being slow for a short while when you go to use it for the first time after some hours away (as any info from the VM will in that case most likely have been replaced in the cache by more recently used bits of your filesystems. I would not give the VM less than 256Mb though.

To reduce the RAM use you might try lubuntu instead of Ubuntu: it is the same base system but with a less demanding desktop environment and less installed/running by default. You might be able to push the allocated RAM for the VM down to 192Mb or perhaps even 128, or if you stick to 256Mb it should be more responsive than Ubuntu's standard setup.

  • I Reduced it to 256 Mb and it is quiet good, When i tried lubuntu, it is much more good on 256. Now i will try to reduce it to 192. if it is as good as Ubuntu on 256 i will use it for my linux vm. Commented Jul 29, 2010 at 10:23

The minimum memory I have got Ubuntu Server running reliably is 64Mb in VMWare.

This machine is running Pound Reverse Proxy.

  • This answer previously stated 32Mb RAM. This turned out to be unreliable.
    – GateKiller
    Commented Jun 14, 2011 at 8:31

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