From owner-freebsd-hackers Tue Aug 13 15:20:44 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id PAA16628 for hackers-outgoing; Tue, 13 Aug 1996 15:20:44 -0700 (PDT) Received: from dg-rtp.dg.com (dg-rtp.rtp.dg.com [128.222.1.2]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id PAA16623 for ; Tue, 13 Aug 1996 15:20:41 -0700 (PDT) Received: by dg-rtp.dg.com (5.4R3.10/dg-rtp-v02) id AA16185; Tue, 13 Aug 1996 18:20:05 -0400 Received: from ponds by dg-rtp.dg.com.rtp.dg.com; Tue, 13 Aug 1996 18:20 EDT Received: from lakes (lakes [10.0.0.3]) by ponds.UUCP (8.6.12/8.6.5) with ESMTP id QAA11893 for ; Tue, 13 Aug 1996 16:29:52 -0400 Received: (from rivers@localhost) by lakes (8.6.12/8.6.9) id QAA02107; Tue, 13 Aug 1996 16:36:03 -0400 Date: Tue, 13 Aug 1996 16:36:03 -0400 From: Thomas David Rivers Message-Id: <199608132036.QAA02107@lakes> To: freebsd-hackers@freefall.FreeBSD.org, lakes!rivers Subject: sio issues (silo overflows on a pentium, locked in ttywait, etc...) Content-Type: text Sender: owner-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk Ok - I know it's been some time since 2.1.5 came out; but I'm finally getting to installing it. The main reason I'm getting to this (besides the fact that I have vacation now) is that I'm dying to move up from 2.1.0 to try and fix the locked-up sio problems I'm experiencing. (Details: a 386dx-33 with an AHA1542B; any 38400 connection eventually hangs in ttywait. This is *with* the fix to the spl levels in the VM from last June.) Anyway, after tripping over the "I'm dead.." phenomena and discovering you have to have a nameserver entry, even if you're not using it (I was wondering why I was saving all that old mail...) - I'm now finally on the way to installing 2.1.5 on my Pentium 75 laptop. However, I'm rather distressed to see: sio0: 1 more silo overflow (total n) messages popping out on VTY-2. This is with a 19200 connection, the sending machine (of course, not experiencing any overflows) is a 486dx-66. The receiving machine is a Pentium 75, with 16550a uarts! This is a direct connection through a NULL modem with brand new cables, with '-h' specified on both slattach's, so rts/cts is being used... Seems to me a Pentium 75 should be able to keep up with 19200, and hopefully be able to do much better... am I the only one tripping over these sio issues? Is there some other magic to setting rts/cts that I don't know about? Is there any hope my 386dx with 16550As will be able to handle anything higher than 19200 without locking up? - Thanks - - Dave Rivers -