From owner-freebsd-smp Sun Mar 22 00:22:03 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id AAA27008 for freebsd-smp-outgoing; Sun, 22 Mar 1998 00:22:03 -0800 (PST) (envelope-from owner-freebsd-smp@FreeBSD.ORG) Received: from zibbi.mikom.csir.co.za (zibbi.mikom.csir.co.za [146.64.24.58]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id AAA26967 for ; Sun, 22 Mar 1998 00:21:59 -0800 (PST) (envelope-from jhay@zibbi.mikom.csir.co.za) Received: (from jhay@localhost) by zibbi.mikom.csir.co.za (8.8.8/8.8.7) id KAA17845; Sun, 22 Mar 1998 10:20:49 +0200 (SAT) From: John Hay Message-Id: <199803220820.KAA17845@zibbi.mikom.csir.co.za> Subject: Re: is it just me, or... In-Reply-To: <199803220756.PAA10655@spinner.netplex.com.au> from Peter Wemm at "Mar 22, 98 03:56:35 pm" To: peter@netplex.com.au (Peter Wemm) Date: Sun, 22 Mar 1998 10:20:49 +0200 (SAT) Cc: smp@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL32 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-smp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > > > > It is just me or has the smp kernel taken a nose dive over the last month > > > > > or so? > > > ... > > I do most of my testing, verification and day-to-day usage with SMP systems. > > It is only an after-thought that I check out UP systems. If there is anythin > g > > that you can point to where performance has decreased, let me know. > ... > Anyway, I got a couple of replies saying that they were having no trouble > at all. One even fired up a rc564/rc5des key searcher (since that was one > of the easiest ways I could provoke problems), but nothing unexpected > happened. > > So, it must be something I'm doing. Is *anybody* running parallel rc564 or > rc5des under SMP? (the rc5 cores are (apparently) not reentrant, so you > need two or more copies running at once to get max throughput, even in the > multithread version) I'm normally running two rc564s on my Dual PII-266 and also do two simultaneous "make release"es (offset with an hour so that cvs don't grind the disks almost to a halt and also so that the /dev/vn0s don't clash) every night with no problems. The machine has an onboard 2940UW with two disks attached. > > The only other things I could think of: > - the machine having trouble is a pure-ELF system, even though the rc5 > key search problems are from a.out executables. > - I had VM86 enabled (being compiled out now) > - I had USER_LDT enabled (going too) > - I had a sound driver enabled (going too). > - I have AHC_TAGENABLE, AHC_SCBPAGING_ENABLE and AHC_ALLOW_MEMIO (works > fine under UP). > I have the AHC_* defines in, but not VM86 or USER_LDT. John -- John Hay -- John.Hay@mikom.csir.co.za To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message