Re: [Xen-devel] suggested domain0 memory size

[Jan Kundrát <jan.kundrat@xxxxxx>]

> > Hi,
> > what is minimal recommended memory reservation for domain0? It won't run 
> > any services apart from sshd and xend and will provide files from /home 
> > (ext3) to other domains as their block devices. Machine is 466MHz 
> > Celeron with 256MB of RAM, UDMA/33 IDE interface, and will run about 5 
> > other domains, so less is more ;-).
>
> Boot it with 64MB and then use the balloon driver to crank it
> down a bit. Give it a swap file to be on the safe side.
Just a small question - if I use `xm balloon Domain-0 64`, `xm info` 
reports correct amount of memory as free, but `free` says that domain0 
has still $original_memory_size total, but used memory grows up, is it 
correct?
(total, used, free, shared, buffers, cached)
# free | grep Mem
Mem:        116692      29056      87636          0        460       9600
# xm info | grep memory
memory                 : 255
free_memory            : 126
# xm balloon Domain-0 64
# free | grep Mem
Mem:        116692      83536      33156          0        460       9600
# xm info | grep memory
memory                 : 255
free_memory            : 179

TIA,
j.



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