Peter Jeremy <[EMAIL PROTECTED]> writes:
> Dag-Erling Smorgrav <[EMAIL PROTECTED]> wrote:
> > The idea is to keep a chunk of zeroes on disk and DMA it into memory
> Have you looked at disk latencies recently? A modern CPU could zero-
> fill a decent fraction of its RAM in the time taken to fetch a page of
> zeroes from the platter. And if it was accessed frequently enough to
> keep the zeroed page in disk cache, you've just moved the bottleneck
> into that disk controller (and you've reduced the effective size of the
> disk's cache by a page).
It still beats the hell out of invalidating your entire L1 and L2
caches.
DES
--
Dag-Erling Smorgrav - [EMAIL PROTECTED]
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