From owner-freebsd-hackers Mon Jul 8 22:29:59 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id WAA20351 for hackers-outgoing; Mon, 8 Jul 1996 22:29:59 -0700 (PDT) Received: from rocky.mt.sri.com (rocky.mt.sri.com [206.127.76.100]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id WAA20332; Mon, 8 Jul 1996 22:29:54 -0700 (PDT) Received: (from nate@localhost) by rocky.mt.sri.com (8.7.5/8.7.3) id XAA16499; Mon, 8 Jul 1996 23:29:51 -0600 (MDT) Date: Mon, 8 Jul 1996 23:29:51 -0600 (MDT) Message-Id: <199607090529.XAA16499@rocky.mt.sri.com> From: Nate Williams To: "Jordan K. Hubbard" Cc: phk@freebsd.org, hackers@freebsd.org Subject: Re: [Fwd: Parallel laplink abuse leads to death of kernel secondary timer] In-Reply-To: <31E1DB6C.167EB0E7@FreeBSD.org> References: <31E1DB6C.167EB0E7@FreeBSD.org> Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk > > Yow, this one's pretty cool! :-) I guess we always knew that PLIP was a > high-overhead proposition, but it's interesting to see that it only > croaks on the Pentium. FWIW, I responded to this on Usenet and basically blamed his hardware. I've used PLIP to mount NFS disks and done build worlds on the two laptops I have, one a 486/75, and the other a Pentium/75. The 'servers' have been my 486/66 at home and my P-100 ASUS box at work, and I've never seen any problems with the timers dying. NFS mounting the disks over PLIP was a *really* good way of generating an incredibly high interrupt load on my 486/66, although the Pentium didn't seem to mind it as much. Both laptops seemed to not notice it much since I suspect they were CPU and/or I/O bound most of the time. Nate