matthew green wrote:
>    
>    Just out of interest, is there a performance penalty on NetBSD when 
>    executing 32-bit binaries with 64-bit kernel, as opposed to native 
>    64-bit binaries? What about Solaris, does it use the same principles 
>    when executing 32-bit binaries?
> 
> 
> every application is different.  if you care about performance you
> need to actually measure 32 vs 64 bit.  depending on the application
> either one can be a clear winner, or perhaps it makes no difference.
> 

Sure, but I was thinking if you're running 64-bit kernel and execute 
32-bit binary, does the OS need to use various emulation layers which 
affect the performance?