CentOS - Sep 2010 - CentOS in low RAM settings

Hello listmates,

I have been playing with Xen VM's and was wondering what the minimum
RAM size in which you could run CentOS 5.5 (i386). So far I managed to
install in 256 MB or 512 MB and then shrink the VM's RAM to 128 MB and
still run the installation. Would anyone know why the install in a 128
MB VM fails (even in text mode)?

Thanks.

Boris.

On Wednesday, September 15, 2010 09:00:35 am Boris Epstein
wrote:
> Hello listmates,
> 
> I have been playing with Xen VM's and was wondering what the minimum
> RAM size in which you could run CentOS 5.5 (i386). So far I managed to
> install in 256 MB or 512 MB and then shrink the VM's RAM to 128 MB and
> still run the installation. Would anyone know why the install in a 128
> MB VM fails (even in text mode)?
> 
> Thanks.
> 
> Boris.
Eh, not enough RAM. :)

-- 

Bobby

-----Original Message-----
From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On
Behalf Of Bobby
Sent: Wednesday, September 15, 2010 3:11 PM
To: CentOS mailing list
Subject: Re: [CentOS] CentOS in low RAM settings

On Wednesday, September 15, 2010 09:00:35 am Boris Epstein
wrote:
> Hello listmates,
> 
> I have been playing with Xen VM's and was wondering what the minimum 
> RAM size in which you could run CentOS 5.5 (i386). So far I managed to 
> install in 256 MB or 512 MB and then shrink the VM's RAM to 128 MB and 
> still run the installation. Would anyone know why the install in a 128 
> MB VM fails (even in text mode)?
> 
> Thanks.
> 
> Boris.
Eh, not enough RAM. :)

-- 
Sometimes one can add swap during the installation.
But swap is slow and thus making the installation takes twice (or worse) longer.
Better is what you did, install with lots of mem, are reducing it afterwards.

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On 9/15/2010 8:00 AM, Boris Epstein wrote:
> Hello listmates,
>
> I have been playing with Xen VM's and was wondering what the minimum
> RAM size in which you could run CentOS 5.5 (i386). So far I managed to
> install in 256 MB or 512 MB and then shrink the VM's RAM to 128 MB and
> still run the installation. Would anyone know why the install in a 128
> MB VM fails (even in text mode)?
>
If you are running VM's you can just copy a working image instead of 
repeating the installs - and if you have fairly identical hardware you 
can do the same with disk images on physical machines.  It's more a 
question of whether that's enough RAM to do anything useful once you are 
running.  In particular it doesn't seem like a great idea to run VM's at
all if you don't have RAM to spare.

-- 
   Les Mikesell
    lesmikesell at gmail.com