[ECOS] Enabling interrupt latency measurement.

[Gary Thomas]

On Mon, 2002-06-24 at 08:53, Christer Kaivo-oja wrote:
> Hi.
> 
> I'm trying to get a reading on the interrupt latency of a platform port I'm 
> developing. I've gotten the tm_basic kernel test to run, but it doesn't 
> include the interrupt latency number..
> 
> The platform port is based on the assabet (Intel SA1110 cpu), and the getting 
> started document lists interrupt latency for the assabet, so it should work 
> on this platform too..
> 
> Anyone have any ideas on how to enable it?

Set these CDL variables:
  CYGVAR_KERNEL_COUNTERS_CLOCK_LATENCY
  CYGVAR_KERNEL_COUNTERS_CLOCK_DSR_LATENCY
and the numbers will be computed/printed


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