Date: Sat, 17 Jun 1995 19:30:04 -0700 From: Heikki Suonsivu <hsu@clinet.fi> To: freebsd-bugs Subject: kern/528: interrupt-level buffer overflows Message-ID: <199506180230.TAA10117@freefall.cdrom.com> In-Reply-To: Your message of Sun, 18 Jun 1995 05:27:39 %2B0300 <199506180227.FAA01387@katiska.clinet.fi>
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>Number: 528 >Category: kern >Synopsis: slow 386 reports excessive interrupt-level buffer overlows >Confidential: no >Severity: serious >Priority: high >Responsible: freebsd-bugs (FreeBSD bugs mailing list) >State: open >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sat Jun 17 19:30:02 1995 >Originator: Heikki Suonsivu >Organization: Helsinki University of Technology, Finland >Release: FreeBSD 2.0-BUILT-19950507 i386 >Environment: 386-16, IDE disk, 10M. A ppp router, 38400 leased line. 16550 serial port. wd8013. It is dedicated solely for the purpose of routing this one single connection. >Description: Kernel spits out lot of these Jun 18 05:14:47 pommi /kernel: sio1: 119 more interrupt-level buffer over flows (total 3642) Jun 18 05:14:47 pommi /kernel: sio1: 119 more interrupt-level buffer overflows ( total 3642) It also very easily reboots when lots of PPP load exits. Low tcp performance hints that it is loosing lots of data. >How-To-Repeat: Use FreeBSD as a router for a PPP connection on a slow machine. >Fix: I think this feature has already been discussed; grepping 'interrupt-level' from FAQ's didn't help. If this is a feature which can be worked around, this might be a doc-bug? However, I find it curous how a 386-16 could be too slow to respond for a 38400 bps link? >Audit-Trail: >Unformatted:
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