On Fri, Oct 06, 2017 at 03:41:26PM -0400, Ed wrote:
> On 10/06/2017 03:14 PM, Mike Keehan wrote:
> > On Fri, 6 Oct 2017 12:17:26 -0400
> > Ed <e...@edjusted.com> wrote:
> > 
> > > On 10/06/2017 12:10 PM, Mike Keehan wrote:
> > > 
> > > > 
> > > > Wouldn't it be possible to add a second Firewall VM to be used
> > > > solely by your special single vm?
> > > 
> > > Yes I believe this would def work, and also should be
> > > automatic/reliable across reboots, but I was really hoping to not
> > > give up 2-4GB of RAM just for this purpose.
> > > 
> > 
> > I think you will find that the firewall VM runs OK in just 500Mb, maybe
> > less.  Search the mail list for "vm memory" - there have been a number
> > of discussions about how much is actually used by the system VMs.  (I
> > can't remember the details off hand, or I would give more info!)
> > 
> > It is worth knowing that although a VM is initially set up with a 4Gb
> > memory allocation, it only uses what it needs.   The rest is still
> > available to the other qubes etc.
> > 
> > 
> >     Mike.
> > 
> 
> You know that's not a bad point.  I never really looked into reducing the
> memory allotment.  I just know anecdotally on my systems the firewall vm's
> use 2-3GB (when left with the default max of 4GB).  I also know they will
> run on less if I'm pushing a system out of memory but I never though to just
> restrict them to less to start.
> 
> I'm not really strapped for memory on the machine I'm working with here so
> it does look like adding an additional firewall VM would be the easiest way
> to get what I want, it just seemed a tad wasteful to me, but perfect is the
> enemy of good....
> 
> Appreciate the input!

I standardly reduce memory on all system qubes to 300M with no ill
effects, and restrict most of my other qubes to 400M.
Compiling and number crunching I set high.

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