On 08/14/13 09:18, Pandu Poluan wrote:
Hello list!
My company has 2 HP DL585 G5 servers and 5 Dell R... something servers.
All using AMD processors. They currently are acting as XenServer hosts.
How do I determine the 'least common denominator' for Gentoo VMs
(running as XenServer guests), especially for gcc flags?
I know that the (theoretical) best performance is to use -march=native ,
but since the processors of the HP servers are not exactly the same as
the Dell's, I'm concerned that compiling with -march=native will render
the VMs unable to migrate between the different hosts.
Note: Yes I know the HP servers are much older than the Dell ones, but
if I go -march=native then perform an emerge when the guest is on the
Dell host, the guest VM might not be able to migrate to the older HPs.
Rgds,
--
-march=i386?
--
Stop talking and start compiling.
Linux user #557897
