Re: [PATCH] Pentium IV cacheline size.

From: Dave Jones (
Date: Sat Oct 13 2001 - 09:27:30 EST

On Sat, 13 Oct 2001, Mikael Pettersson wrote:

> According to the P4 and Xeon optimisation manual (#248966-03), the
> L1 cache has a 64-byte line size and the L2 cache has a 128-byte
> line size. (Page 1-18, Table 1-1.) Perhaps someone just confused

Great, conflicting documentation.
#24547203 (Vol3 : System programming guide) has this to say..
(page 325)
"The cache lines for the L1 and L2 caches in the Pentium 4 processor
 are 64 bytes wide"



| Dave Jones.
| SuSE Labs

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