*BSD News Article 11118


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	id AA1272 ; Tue, 23 Feb 93 14:33:12 EST
Newsgroups: comp.unix.bsd
Path: sserve!manuel.anu.edu.au!munnari.oz.au!spool.mu.edu!uunet!sci34hub!gary
From: gary@sci34hub.sci.com (Gary Heston)
Subject: Re: 386BSD - much slower with 16MB
Message-ID: <1993Feb12.155404.21726@sci34hub.sci.com>
Reply-To: gary@sci34hub.sci.com (Gary Heston)
Organization: SCI Systems, Inc., Huntsville, Al.
References: <C2809r.6vz@rahul.net>
Date: Fri, 12 Feb 1993 15:54:04 GMT
Lines: 26

In article <C2809r.6vz@rahul.net> kent@rahul.net (Kent Talarico) writes:
>I just increased my memory from 8MB to 16MB and the machine has
>slowed down drastically.

What kind of motherboard do you have?
Does it have cache?
How big is the cache?
What kind of processor are you using?
Is this new memory on the CPUs local bus, or on an I/O card?

>Anyone know what's causing this, and is there a fix?

Just guessing, but I'd suspect you have a Gateway 2000 system with
64K of cache, which doesn't properly support 16MB of main memory.

Try disabling the cache, and running the compile again with 8MB. You'll
probably see about the same compile time as the 16MB configuration.

If you used the I/O bus to add memory, there's no hope. It's too slow.


-- 
Gary Heston    SCI Systems, Inc.  gary@sci34hub.sci.com   site admin
The Chairman of the Board and the CFO speak for SCI. I'm neither.
Remember: A majority of the American people voted against *all* of the
Presidential Candidates. How encouraging....