On Jun 14, 2008, at 11:48 AM, Rudi Ahlers wrote:
Sandor W. Sklar wrote:
On Jun 14, 2008, at 5:35 AM, Gastón Keller wrote:
I have this wrong, or am I not understanding something?
AFAIK what some people is doing is setting a level of memory for
Dom0
for it to never go down that level (giving memory to the guests).
That
is, if you set the memory to 1 GB, Dom0 will allocate all your
memory
except for that 1 GB. It's a way of ensuring that Dom0 will never
run
out of memory.
Ah, thanks! That makes sense. Is there some formula for
determining how much memory a dom0 might need, given a system with
X amount of RAM, and X number of guests?
-s-
The "formula" would largely depend on what you're going to run on
dom0, and is roughly the same as for a domU instance. On a VPS
server, which only serves domU VPS, you probably won't need more
than 512MB RAM. All our VPS servers run min. 512MB RAM, which is
enough for SSH, FTP, exim, Squid, syslogd, etc to run. All the other
services (MySQL, Apache, PostgreSQL, etc) are run from the domU VPShth
Well, of course, the amount of memory that a dom0 needs depends upon
the service running within it. I guess I didn't word my question
explicitly enough. Is there a formula for determine how much memory a
dom0 might need, given a system with X amount of RAM, and X number of
guests, assuming there are no other services running in the dom0?
Thanks,
-s-
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