From owner-freebsd-questions Wed Nov 20 22:47:05 1996 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id WAA09118 for questions-outgoing; Wed, 20 Nov 1996 22:47:05 -0800 (PST) Received: from mail001.mediacity.com (mail001.mediacity.com [206.24.105.68]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id WAA09113 for ; Wed, 20 Nov 1996 22:47:03 -0800 (PST) From: brian@mediacity.com Received: (qmail-queue invoked from smtpd); 21 Nov 1996 06:46:42 -0000 Received: from home001.mediacity.com (HELO mediacity.com) (206.24.105.66) by mail001.mediacity.com with SMTP; 21 Nov 1996 06:46:42 -0000 Received: (qmail-queue invoked by uid 100); 21 Nov 1996 06:46:28 -0000 Message-ID: <19961121064628.9446.qmail@mediacity.com> Subject: Hayes ESP and interrupt-level buffer overflows To: freebsd-questions@freebsd.org Date: Wed, 20 Nov 1996 22:46:28 -0800 (PST) Reply-To: brian@mediacity.com X-Mailer: ELM [version 2.4ME+ PL22 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-questions@freebsd.org X-Loop: FreeBSD.org Precedence: bulk I have a Hayes ESP card hooked to as Motorola BSPro running at 230400. I've got the Hayes ESP board set to: Enhanced 4x mulitplier (I use 57600 baud within iijppp) hardware rts/cts 8 bit interface (I've run with the FIFO enabled and disabled and get the same behavior) For the most part things work, but when I ftp stuff, I get sio2: X more interrupt-level buffer overflows (total xxx), where X is 3 to 32, and my throughput drops off. Sometimes I can do 100K xfers and get around 11.2KBs, which would seem around the limit cuz I have to run 2x56kbps B channels where I live. However, more often than not I get the sio overflow messages and the performance drops to between 2 and 6 KBs. The boot reports: sio2 at 0x3e8-0x3ef irq 5 on isa sio2: type 16550A : ESP and I have the config port set to 0x140. The machine is a P5-90, running -current. Have I misconfigured something? Is anyone out there having better luck than I? Thanks, -- Brian Litzinger Powered by FreeBSD http[s]://www.mpress.com