Hello,

We are currently use Xen on CentOS 5.1 to host several machines of
ours (i.e. everything on that physical box is in our control).

Since we decided to standardise on CentOS (it was decided for us -
hard to find hosters who support Debian without extra hassle), which
means that all virtual hosts run the same OS, I though that maybe
using vservers instead of a fully para-virtualized Xen machine for
each function would let us squeeze out that much more out of our
hardware (memory, cpu, io).

Two questions:

1. Is this correct (that vserver will run more efficiently in that situation)?
2. How does the vserver support in CentOS 5.1 compares to Xen? I mean
- with Xen it's just a matter of installing a couple of packages and
off you go (especially now that the learning curve is mostly behind
me), with vserver - I can't even find a package which mentions this
string in its name or description ("yum search vserver"). So is it
worth the hassle?

We expect to use the servers with very high IO (lots of disk access)
and CPU utilization.

Thanks,

--Amos

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