Subject: Re: pentium's cache
To: None <port-i386@NetBSD.ORG>
From: Dave Sainty <David.Sainty@MCS.VUW.AC.NZ>
List: port-i386
Date: 05/13/1997 07:24:33
On 12 May 97 17:22:09 +0330 
 "HARAWAT.IN.ORACLE.COM" <HARAWAT.IN.ORACLE.COM.ofcmail@in.oracle.com>
 wrote:

 > Does netbsd's code uses the on chip caches ( 2 8kb caches) of the
 > pentium chips. 

I've done some coding with special attention to the L1 cache space
available, so I can guarantee that it does (unless you disable it in
the BIOS or some other strangeism).

You may also like to know that NetBSD is considerably lighter on the
cache flushes than win95.  I've seen code that fits inside the 8k
data/ 8k instruction cache run around twice as fast under NetBSD as
under win95.  The margin can be smaller than this but tends to
increase the longer the win95 machine goes without a reboot.

Dave.