From owner-freebsd-current Mon Aug 17 08:41:26 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id IAA16871 for freebsd-current-outgoing; Mon, 17 Aug 1998 08:41:26 -0700 (PDT) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from bright.fx.genx.net (bright.fx.genx.net [206.64.4.154]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id IAA16864 for ; Mon, 17 Aug 1998 08:41:23 -0700 (PDT) (envelope-from bright@www.hotjobs.com) Received: from localhost (bright@localhost) by bright.fx.genx.net (8.9.1/8.8.8) with SMTP id KAA06328; Mon, 17 Aug 1998 10:11:10 -0500 (EST) (envelope-from bright@hotjobs.com) X-Authentication-Warning: bright.fx.genx.net: bright owned process doing -bs Date: Mon, 17 Aug 1998 10:11:10 -0500 (EST) From: Alfred Perlstein X-Sender: bright@bright.fx.genx.net To: Paul van der Zwan cc: current@FreeBSD.ORG Subject: Re: Cards sharing irq's on PCI bus In-Reply-To: <199808171104.NAA23662@trantor.stuyts.nl> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG well, that's unclear, last i heard linux was the only OS to support shared IRQs and i don't even know how well it handled it. (i think it was more of a "don't use them at the same time" deal) but, you can twiddle your bios to give more IRQs to PCI/pnp devices, look around in it, you should be able to switch IRQ reservations from something like "LEGACY ISA" to "PCI/pnp" (perhaps you used all of your IRQs, but i did this to give my PCI system more IRQs because too many were reserved for ISA) Alfred Perlstein - Programmer, HotJobs Inc. - www.hotjobs.com -- There are operating systems, and then there's BSD. -- http://www.freebsd.org/ On Mon, 17 Aug 1998, Paul van der Zwan wrote: > I am running very low on available irq's and I noticed that the bios put both > my SMC 8432BT and my Adaptec 2740 on irq 9. Network performance was terrible, > iozone on NFS only 300kB/s. After disabling my IDE controller (only need that > when running Solaris) the Adaptrec was put on irq 14 (where the IDE used to be) > and my network performance was back ( more than 900kB/s). > > Is it allowed to put have more than one PCI card use the same irq ??? > It sort of worked. No errors or so, just lousy performance ?? > Maybe someone can shed some light on this ?? > > > Paul > -- > Paul van der Zwan paulz @ trantor.stuyts.nl > "I think I'll move to theory, everything works in theory..." > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-current" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message