Re: Missing cache flush.

Ralf Baechle
2001-06-05T15:55:44Z

On Wed, Jun 06, 2001 at 12:57:03AM +1200, Chris Wedgwood wrote:

> I don't know about the CRIS (never heard of it, what is it?), but on
> an Athlon when benchmarking stuff, I could still see L1 cache hits
> from data that was 15 seconds old under certain work-loads (obviously
> not gcc!). Does anyone know how old something may exisit in cache
> before being written back to RAM?

I know of no architecture that has a time limit that after which's expire
caches get written back to memory. In other words cache lines may stay
dirty for an indefinate time if things are just right.

Ralf