From owner-freebsd-questions Thu Jul 27 15:04:30 1995 Return-Path: questions-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.11/8.6.6) id PAA09114 for questions-outgoing; Thu, 27 Jul 1995 15:04:30 -0700 Received: from easynet.com (easy1.easynet.com [199.2.26.10]) by freefall.cdrom.com (8.6.11/8.6.6) with SMTP id PAA09107 for ; Thu, 27 Jul 1995 15:04:25 -0700 Received: by easynet.com (Smail3.1.28.1 #7) id m0sbb2U-000rfdC; Thu, 27 Jul 95 15:04 WET DST Message-Id: From: brian@MediaCity.com (Brian Litzinger) Subject: Re: Pentiums and cache problems To: nik@blueberry.co.uk (Nik Clayton) Date: Thu, 27 Jul 1995 15:04:22 -0700 (PDT) Cc: questions@FreeBSD.org In-Reply-To: <199507271147.LAA01078@elbereth.blueberry.co.uk> from "Nik Clayton" at Jul 27, 95 11:47:52 am X-Mailer: ELM [version 2.4 PL23] Content-Type: text Content-Length: 1087 Sender: questions-owner@FreeBSD.org Precedence: bulk > How do, > Can anyone provide technical information as to the nature of the > problems concerning some motherboards and the processor cache? > My Pentium (100Mhz) has two caches, one external, one internal. > During my intial install of FreeBSD, they were both on. The install > would randomly reboot at about halfway through. Turning off the external > cache fixed this problem. Amazing. Just yesterday, I switched off the external cache on my Pentium 90 machine, which occasionally rebooted, and now its solid like a rock. The problem manifests itself as just a simple reboot (no panic, no crash) during extensive disk activity (building kernel or hylafax). On lotsa different motherboards (though all PCI). I'm using adaptec 2940W SCSI controller. > I know that if I turn around to my motherboard supplier they'll say "It > works find under DOS/Windows/OS2/Linux, prove it's a bug in our > motherboard". So can anyone provide me with technical information that I > can give the manufacturer and say "fix this"? I'd love to hear this too. Brian Litzinger brian@easynet.com