Re: [PATCH 0/3] powerpc: Instrument Hypervisor Calls

linuxppc-dev-bounces+lukebrowning=us.ibm.com@ozlabs.org wrote on 
07/15/2006 12:30:54 PM:

quoted

What happened to the question whether to use PURR values for also 

measuring

quoted

cycles spent executing the hcall as opposed to cycles that passed 

before

quoted

the hcall returns. Did that turn out not giving extra information 

after all

quoted

or was there a different reason to drop that idea?

You have to be careful with PURR since it may be context switched
between partitions.

That shouldn't be an issue as the PURR is supposed to be virtualized by 
PHYP at 
the virtual processor level.

Luke