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Re: [Xen-users] can Xen use swap instead or RAM?

  • To: George Shuklin <george.shuklin@xxxxxxxxx>
  • From: Martinx - ジェームズ <thiagocmartinsc@xxxxxxxxx>
  • Date: Fri, 24 Sep 2010 16:24:20 -0300
  • Cc: xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Fri, 24 Sep 2010 12:26:12 -0700
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Mmm... You mean this:



On 24 September 2010 15:49, George Shuklin <george.shuklin@xxxxxxxxx> wrote:
Yes, It is nice technology, but it still do not allow hypervisor
swapping or overselling. :)

Ð ÐÑÐ, 24/09/2010 Ð 14:57 -0300, Martinx - ããããã ÐÐÑÐÑ:
> Hi!

> ÂThe Xen 4.0 introduces the TMEM project, take a look at it:

> Âhttp://wiki.xensource.com/xenwiki/Xen4.0

> ÂTMEM allows improved utilization of unused (for example page cache)
> PV guest memory. more
> information: http://oss.oracle.com/projects/tmem/

> On 24 September 2010 14:46, George Shuklin <george.shuklin@xxxxxxxxx>
> wrote:
> Â Â Â Â You can use swap of any size at VM level (every VM will have
> Â Â Â Â it own
> Â Â Â Â swap).
> Â Â Â Â Right now there is no way to do hypervisor swap or oversell
> Â Â Â Â memory.
> Â Â Â Â Ð ÐÑÐ, 24/09/2010 Ð 13:14 -0400, Boris Epstein ÐÐÑÐÑ:
> Â Â Â Â > Hello listmates,
> Â Â Â Â >
> Â Â Â Â > Let's say I've got a machine with 1 GB of RAM and I want to
> Â Â Â Â host 3 512
> Â Â Â Â > MB virtual machines on it? Is that possible - i.e., is it
> Â Â Â Â possible to
> Â Â Â Â > force Xen to use swap and pass it off as RAM to the VM's? I
> Â Â Â Â know it is
> Â Â Â Â > slow and inefficient but for the purposes of testing - is
> Â Â Â Â that
> Â Â Â Â > possible?
> Â Â Â Â >

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