From owner-freebsd-questions Sun Apr 19 20:09:35 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id UAA23386 for freebsd-questions-outgoing; Sun, 19 Apr 1998 20:09:35 -0700 (PDT) (envelope-from owner-freebsd-questions@FreeBSD.ORG) Received: from fly.HiWAAY.net (root@fly.HiWAAY.net [208.147.154.56]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id DAA23372 for ; Mon, 20 Apr 1998 03:09:14 GMT (envelope-from dkelly@nospam.hiwaay.net) Received: from nospam.hiwaay.net (tnt2-84.HiWAAY.net [208.147.148.84]) by fly.HiWAAY.net (8.8.8/8.8.6) with ESMTP id WAA14410; Sun, 19 Apr 1998 22:08:57 -0500 (CDT) Received: from localhost (localhost [127.0.0.1]) by nospam.hiwaay.net (8.8.8/8.8.4) with ESMTP id VAA08174; Sun, 19 Apr 1998 21:33:09 -0500 (CDT) Message-Id: <199804200233.VAA08174@nospam.hiwaay.net> X-Mailer: exmh version 2.0.2 2/24/98 To: Antti-Pekka Liedes cc: questions@FreeBSD.ORG From: David Kelly Subject: Re: two AHA-2940 controllers: horrible performance In-reply-to: Message from Antti-Pekka Liedes of "Sun, 19 Apr 1998 20:17:04 +0300." <19980419201704.55876@hutcs.cs.hut.fi> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Sun, 19 Apr 1998 21:33:09 -0500 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Antti-Pekka Liedes writes: > > I just tried two Adaptec AHA-2940 SCSI controllers on a ppro 180 box running > 2.2.6-stable from today. The first controller that has always been used in > the machine worked as before, no problems, but the second controller had > huge performance problems. [...] > ahc0 rev 0 int a irq 15 on pci0:17:0 > ... > ahc1 rev 0 int a irq 15 on pci0:20:0 [...] > any ideas? You noticed your MB has both on the same IRQ? Thats legal with PCI, but who knows with PC hardware? See what happens if you move one (with the MB BIOS) down to the 9, 10, or 11 range. -- David Kelly N4HHE, dkelly@nospam.hiwaay.net ===================================================================== The human mind ordinarily operates at only ten percent of its capacity -- the rest is overhead for the operating system. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message