dtrace discuss - Nov 2005 - Translation look aside buffer performance

hi:


I am trying to probe TLB metrics.  


Pointer is very appreciated.

Thanks
This message posted from opensolaris.org

ttoulliu2002 wrote:
> hi:
> 
> 
> I am trying to probe TLB metrics.  
> 
> 
> Pointer is very appreciated.
> 
On sparc, tracing of the tlb miss routines isn''t supported;
on x86 it''d done in hardware and you''ll need the
cpu performance counter dtrace provider we keep
thinking about...

A special provider would need to be written to handle
sparc since the kinds of things you can do at trap level
are rather constrained.

For now, I suggest trapstat for sparc and cputrack
or cpustat for either sparc or x86.

- Bart



-- 
Bart Smaalders			Solaris Kernel Performance
barts at cyber.eng.sun.com		http://blogs.sun.com/barts

On Tue, Nov 15, 2005 at 07:41:33PM -0800, Bart Smaalders
wrote:
> ttoulliu2002 wrote:
> >I am trying to probe TLB metrics.  
> 
> On sparc, tracing of the tlb miss routines isn''t supported;
... with DTrace. For that you need to use:
> For now, I suggest trapstat for sparc and cputrack
> or cpustat for either sparc or x86.
... just so there''s no confusion.

Adam

-- 
Adam Leventhal, Solaris Kernel Development       http://blogs.sun.com/ahl