From owner-freebsd-isdn Sat Oct 10 09:15:20 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id JAA22373 for freebsd-isdn-outgoing; Sat, 10 Oct 1998 09:15:20 -0700 (PDT) (envelope-from owner-freebsd-isdn@FreeBSD.ORG) Received: from uriela.in-berlin.de (servicia.in-berlin.de [192.109.42.145]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id JAA22354 for ; Sat, 10 Oct 1998 09:15:10 -0700 (PDT) (envelope-from nortobor.nostromo.in-berlin.de!ripley@servicia.in-berlin.de) Received: by uriela.in-berlin.de (Smail-3.2.0.101 1997-Dec-17 #1) id m0zS1hd-000VUXC; Sat, 10 Oct 1998 18:17:09 +0200 (CEST) Received: (from ripley@localhost) by nortobor.nostromo.in-berlin.de (8.8.7/8.8.7) id LAA01826; Sat, 10 Oct 1998 11:36:05 +0200 (CEST) (envelope-from ripley) Message-ID: <19981010113603.27480@nostromo.in-berlin.de> Date: Sat, 10 Oct 1998 11:36:03 +0200 From: "H. Eckert" To: Christoph Weber-Fahr Cc: freebsd-isdn@FreeBSD.ORG Subject: Re: what's wrong with a1 and irq 2 ? References: <199810091511.RAA10239@helena.otelo-call.de> <199810092100.XAA10590@helena.otelo-call.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.84e In-Reply-To: <199810092100.XAA10590@helena.otelo-call.de>; from Christoph Weber-Fahr on Fri, Oct 09, 1998 at 11:00:54PM +0200 Sender: owner-freebsd-isdn@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Fri, Oct 09, 1998 at 11:00:54PM +0200, Christoph Weber-Fahr wrote: > > > There seem to be two different flavours of the > > > AVM-card around. Older ones, where you have to jumper the IRQ line > > > and newer ones, where the IRQ line is set by software. > > > > It is a revision 2.0 card. 8 bit. It has jumpers for IRQ 2,3,4,5,6,7 > > and IO 200, 240, 300, 340. (I never saw a newer one. Are those 16-bit > > cards ?) Yes (I'm using 0x240, irq 12). Do you have an ISDN plug on the card ? I've seen an old T*l*s card that has a sub-d9 instead... > I tried it with a changed IRQ. Replaced the 8bit SCSI with an equally > bad 16bit version, thus freeing IRQ5, which is now used by the A1. SCSI doesn't seem too important then :-) I've only got an Adaptec 1510 for my QIC150, too. If you could get one a 1541C is an excellent card for ISA SCSI. > > it indeed seems to compete with the vga card for the interrupt. VGA cards don't necessarily need an irq. Mine doesn't for sure. > > Another observation I made is that the card seems to put a heavy > > interrupt load on the machine. Top gives an interrupt load of > > around 10% while the card is under load, with occasional (rare) > > peaks up to 50 %. This is a 486/50 (ISA only) System. I didn't observe my interrupt loads closely but I can't say my system (pure ISA 486/50 as well) gets significantly burdened by it. But then I'm still using the ancient bisdn at home... > I don't think this interrupt stuff is 'normal'. This is eating 10% > of the computing power of a 486/50 with only one B channel used. 10% interrupt load != 10% of the system. > On the other hand I can put the same card into a lousy 386sx/16 and > blast 2 simultaneous IDTrans sesssions with full speed over both B > channels under good plain old DOS. (I've done that!). There > must be some problem in the driver somewhere, which AVM's own > DOS CAPI driver doesn't have. I bet the DOS stuff is polled and not interrupt driven. Greetings, Ripley -- http://www.in-berlin.de/User/nostromo/ == "You don't say what kind of CD drive or hard disks you have, but since it is causing you trouble I'll assume it is IDE." -- comp.unix.bsd.freebsd.misc To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isdn" in the body of the message