Re: Moving MySQL to its own host
Craig Sanders wrote:
> i'm curious....in a virtual server system like xen or vmware, how is
> disk-caching handled?
>
> e.g. say you have a bunch of virtual machines, each allocated 256MB RAM, but
> the physical hardware has, say, 2GB RAM. is disk cached/buffered individually
> by each virtual machine, or by the hypervisor kernel, or by both?
>
>
> craig
To what it seems to me: each VM will have it's own mechanics to do the
caching first. Then, as the hypervisor does the I/O backend (dom0 xvd
daemon) will as well do caching of the sectors of your hard drives. It
should be exactly the same case for VMWare...
Thomas
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