From: root@jacobs.jacobs.mn.org (Mike Horwath) Subject: Re: 486 caches -- testing and enabling Date: Thu, 10 Jun 1993 07:11:37 GMT
Piercarlo Grandi (pcg@aber.ac.uk) wrote:
: >>> On 2 Jun 1993 19:23:14 GMT, pgf@cayman.com (Paul Fox) said:
: Fox> I was using the dhrystone2.1 tests. I have a DX2/66, so I would
: Fox> expect to see a clear effect from both the on-chip and off chip
: Fox> caches. The external cache is 256K.
: The dhrystone test is so small it resides entirely within the 8KB on
: chip cache. It will not make any use of the external cache.
Under Linux (or any other *nice), running a small load wiil for sure flush
the external (and internal I might add) cache because of context switches.
There really isn't much that is under 256K and such that will fit in the
cache for long enought to make a HUGE difference at all.
-- Mike Horwath IRC: Drechsau BBS: Drechsau LIFE: lover root@jacobs.jacobs.mn.org drechsau@jacobs.jacobs.mn.org Jacob's Ladder 612-588-0201 UUCP, UseNet, Linux files, BBS