Re: [Xen-users] HTPC + DUAL PC In one

[Gordan Bobic <gordan@xxxxxxxxxx>]

On 2014-07-16 11:12, Mattia Carrara wrote:
> Hello again Guys. I looked up that HP Microserver, it is pretty cool
> and cheap. Now I have a limited budged so i will remain on virtualized
> HTPC. Maybe in the future it will be useful.Â
It's cheaper than a decent GPU. :)

> Gordan what is a ZFS reciever?
The question was referring to ZFS' send/receive feature. With it
you can easily send and receive file system and volume snapshots
between different machines.

> About CPUs, I find on the net some benchmarks:
> http://www.cpubenchmark.net/compare.php?cmp[]=1780&cmp[]=1782&cmp[]=2275
> [2]
> It seems that i7 is more performant than AMDs... But the point is that
> using Xen and multiple virtual machines, i'll need more parallel
> calculus power, right? So 8 cores would be better? Is it possible that
> those benchmarks aren't done using all the eight cores of AMDs? Austin
> said that he can reach the calculus power of aÂdual processor Xeon
> E3-1286 v3. That's really a goodÂresult. So maybe i should choose
> AMD...
How many cores are you going to give to your VMs? You can overbook
CPU cores with Xen, i.e. if you have 8 cores and 3 VMs, you can give
each VM 4 cores and Xen will figure out dynamically which core to
schedule the load on, even though it only has 8 physical cores to
schedule 12 virtual cores plus itself between.



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