From owner-freebsd-stable Sun Dec 30 9:36: 3 2001 Delivered-To: freebsd-stable@freebsd.org Received: from salmon.maths.tcd.ie (salmon.maths.tcd.ie [134.226.81.11]) by hub.freebsd.org (Postfix) with SMTP id 7099537B42C for ; Sun, 30 Dec 2001 09:35:49 -0800 (PST) Received: from walton.maths.tcd.ie by salmon.maths.tcd.ie with SMTP id ; 30 Dec 2001 17:35:48 +0000 (GMT) Date: Sun, 30 Dec 2001 17:35:48 +0000 From: David Malone To: Brian McDonald Cc: Chris Johnson , stable@FreeBSD.ORG Subject: Re: syslogd blocking => can't su to root Message-ID: <20011230173548.A58662@walton.maths.tcd.ie> References: <20011230081106.A98698@palomine.net> <20011230111949.G2732-100000@nivomede.internal.lustygrapes.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20011230111949.G2732-100000@nivomede.internal.lustygrapes.net>; from brian@lustygrapes.net on Sun, Dec 30, 2001 at 11:30:54AM -0500 Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Sun, Dec 30, 2001 at 11:30:54AM -0500, Brian McDonald wrote: > I've seen this on 4.1-RELEASE boxes as well. Was hoping it would just go > away when I upgrade them to 4.5. I noticed it when it blocked other > processes waiting for syslog, such as named. To fix this there we'd have to decide what should happen when syslogd finds that some destination for messages becomes blocking. Syslogd could just drop messages which would cause blocking. Alternatively, syslogd could allow a certain amount of backup for which it would buffer. Also, it is bad that syslogd can stop other processes by not reading from its socket - it's possible we should change syslog(3) to timeout or not to block. Have you noticed what causes your systlogd to get backed up? I've never seen it happen on any of the machines I look after, so maybe you have some unusual configuration which makes you prone to it? David. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message