From owner-freebsd-smp@FreeBSD.ORG Wed Apr 9 17:18:32 2003 Return-Path: Delivered-To: freebsd-smp@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7E03A37B401; Wed, 9 Apr 2003 17:18:32 -0700 (PDT) Received: from bluejay.mail.pas.earthlink.net (bluejay.mail.pas.earthlink.net [207.217.120.218]) by mx1.FreeBSD.org (Postfix) with ESMTP id E570443F93; Wed, 9 Apr 2003 17:18:31 -0700 (PDT) (envelope-from tlambert2@mindspring.com) Received: from pool0163.cvx22-bradley.dialup.earthlink.net ([209.179.198.163] helo=mindspring.com) by bluejay.mail.pas.earthlink.net with asmtp (SSLv3:RC4-MD5:128) (Exim 3.33 #1) id 193Plq-0003rN-00; Wed, 09 Apr 2003 17:18:27 -0700 Message-ID: <3E94B7E8.B1D1F03B@mindspring.com> Date: Wed, 09 Apr 2003 17:16:40 -0700 From: Terry Lambert X-Mailer: Mozilla 4.79 [en] (Win98; U) X-Accept-Language: en MIME-Version: 1.0 To: Aleksandr Melentiev References: <001b01c2fee3$16e1e710$0300a8c0@kronos> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-ELNK-Trace: b1a02af9316fbb217a47c185c03b154d40683398e744b8a46a17f784a2b259f3f0178828ab28aeae3ca473d225a0f487350badd9bab72f9c350badd9bab72f9c cc: freebsd-smp@freebsd.org cc: John Baldwin Subject: Re: System freezes with SMP support enabled X-BeenThere: freebsd-smp@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: FreeBSD SMP implementation group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Apr 2003 00:18:32 -0000 Aleksandr Melentiev wrote: > Here's an exact behavior when SMP support is enabled: > Hence, one network card is onboard which is an fxp0. > > 5.0-RELEASE: > Often spontaneous and constant 'watchdog timeouts' with different network > cards that I have tried including SMC 1255 and 3Com 3C905-TX. An Intel > Pro/100+ showed 'device timeout'. In all cases, system would stop > responding. In most cases network connection would dissapear. Sometimes it > would happen again on the first second after reboot. Onboard network card > didnt show any errors! Only the PCI cards did. > > 4.8-RELEASE: > Same behavior as above, only no error messages whatsoever, network > connection goes down and system locks up. It is not spontaneous, happens > only when I try to transfer >1MB files locally via ftp (tried several > different ftpd and clients too), maybe other ways of high-speed transfering > are affected too. However, if I throttle my ftp client's upload speed to > 15KBytes/sec, it transfers without a problem and systems stays stable. I think we would still like to know: 1) Is the "transfer >1MB files locally via ftp" necessary for the problem to exhibit on 5.0, as well? 2) How long ago was your motherboard manufactured, and what chipset is it using? If it's a Mercury, Saturn, or Neptune chipset from Intel, you will definitely be limited to 2 PCI DMA masters at one time (chipset bug). 3) Have you tried using the 8254 timer, instead of the PIIX timer? I have other lower probability questions, but they can wait... -- Terry