Re: Moving MySQL to its own host

On Tue, Jun 26, 2007 at 10:17:13PM -0400, Roberto C. Sánchez wrote:
> - calling MySQL ACID compliant is a bit of a stretch

a huge stretch :-)

> - if Apache is hammering your disk, then you very likely don't have
> enough RAM (unless your website has gargantuan amounts of content > not in a database with a fairly uniform access pattern)

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

-- 
craig sanders 

Unseen University had never admitted women, muttering something about
problems with the plumbing, but the real reason was an unspoken dread that
if women were allowed to mess around with magic they would probably be
embarrassingly good at it ...
		-- Terry Pratchett, "The Light Fantastic"


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