About mtune=atom

John Reiser jreiser at bitwagon.com
Tue Jan 25 00:43:47 UTC 2011

On 01/24/2011 03:53 PM, Matthew Miller wrote:
> This seems like it might be useful in many virtual machine setups. Can you
> quantify "measurable"?

"Measurable" means 1% or more.  Obviously this depends on the workload.
All code gets 16 general registers and the first six integer/pointer
arguments passed in registers.  Apps get guaranteed MMX and SSE.
Kernel gets to tend small processes only, and no big ones.
The catch is that not all the pieces exist today.


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