<br>
<br><tt><font size=2>linuxppc-dev-bounces+lukebrowning=us.ibm.com@ozlabs.org
wrote on 07/15/2006 12:30:54 PM:<br>
<br>
> <br>
> > What happened to the question whether to use PURR values for
also measuring<br>
> > cycles spent executing the hcall as opposed to cycles that passed
before<br>
> > the hcall returns. Did that turn out not giving extra information
after all<br>
> > or was there a different reason to drop that idea?<br>
> <br>
> You have to be careful with PURR since it may be context switched<br>
> between partitions.<br>
> </font></tt>
<br>
<br><tt><font size=2>That shouldn't be an issue as the PURR is supposed
to be virtualized by PHYP at </font></tt>
<br><tt><font size=2>the virtual processor level.</font></tt>
<br>
<br><tt><font size=2>Luke</font></tt>