Re: [uml-user] UML and Disk Write Cache

[Chris L. <ch...@ex...>]

On Sat, Dec 31, 2005 at 12:36:50AM +0100, Juraj Holtak wrote:
> I still do not understand, why the guests became that much slow. Could
> somebody explain me why?

Very probably you're suffering from seeing the real seek
performance of the disks. Switching on the write cache
hides this, at the cost of losing data in the event of a
crash; switching it off make it less likely you'll lose
data in a crash, but significantly shortens the life of
the disks.

-- 
``Depending on your age, you will either be singing a song about
  clockwork mice who fix things, or thinking, oh my god, someone
  has left Edward Heath under the grill.''
  (Caitlin Moran; attrib. caption under a picture of Bagpuss)