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Received: by minnie.vk1xwt.ampr.org with NNTP id AA1156 ; Tue, 23 Feb 93 14:28:14 EST Path: sserve!manuel.anu.edu.au!munnari.oz.au!uunet!ferkel.ucsb.edu!taco!gatech!emory!ogicse!usenet.coe.montana.edu!osyjm From: osyjm@cs.montana.edu (Jaye Mathisen) Newsgroups: comp.unix.bsd Subject: Re: 386BSD - much slower with 16MB Message-ID: <1993Feb10.171045.10564@coe.montana.edu> Date: 10 Feb 93 17:10:45 GMT Article-I.D.: coe.1993Feb10.171045.10564 References: <C2809r.6vz@rahul.net> Sender: usenet@coe.montana.edu (USENET News System) Organization: CS Lines: 19 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. > >I timed a complete compile of /bin/sh. It took 52 seconds with 8MB >and 163 seconds with 16MB. > >I'm using a kernel with all the patchkit-0.2 patches installed. Somebody here was having the same problem, but under OS2. Turns out his BIOS has some kind of option for setting the memory that is cacheable to extend to the new range. ie, apparently, accesses outside his original 8MB's weren't being cached by the external CPU cache. Maybe it's something like that. -- Jaye Mathisen, COE Systems Manager (406) 994-4780 410 Roberts Hall,Dept. of Computer Science Montana State University,Bozeman MT 59717 osyjm@cs.montana.edu