From owner-freebsd-stable Thu Dec 2 9:52:33 1999 Delivered-To: freebsd-stable@freebsd.org Received: from sstar.com (sstar.com [209.102.160.1]) by hub.freebsd.org (Postfix) with ESMTP id 666BD14D09 for ; Thu, 2 Dec 1999 09:52:03 -0800 (PST) (envelope-from king@sstar.com) Received: from JKING ([134.132.75.164]) by sstar.com with ESMTP (IPAD 2.52) id 6608800; Thu, 02 Dec 1999 11:49:19 -0600 Message-Id: <4.2.0.58.19991202114512.00a47948@mail.sstar.com> X-Sender: king@mail.sstar.com X-Mailer: QUALCOMM Windows Eudora Pro Version 4.2.0.58 Date: Thu, 02 Dec 1999 11:49:19 -0600 To: freebsd-stable@freebsd.org From: Jim King Subject: Re: swap_pager: indefinite wait buffer? In-Reply-To: <4.2.0.58.19991202095115.00aa9648@mail.sstar.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG At 09:53 AM 12/2/1999 -0600, Jim King wrote: >Sorry if this doesn't belong on -stable, but I didn't get a response on >-questions. > >I got this in my messages file: > >Dec 1 09:10:20 cgi /kernel: swap_pager: indefinite wait buffer: device: >0x20401, blkno: 776, size: 4096 >Dec 1 09:11:31 cgi /kernel: swap_pager: indefinite wait buffer: device: >0x20401, blkno: 776, size: 4096 >Dec 1 09:11:32 cgi last message repeated 2 times > >What exactly does this mean? I'm afraid that it means some disk hardware >is flaking out. If that's the case how do I know which disk had the >problem? (I have swap space on two drives.) OK, call me a doofus for not searching the mailing list archives. To answer my own question, this means that a pageout took longer than 20 seconds on device major 4, minor 0x20001, which happens to be /dev/da0s1b on my system (swap space on the first drive). The usual advice is that this is harmless. It does NOT indicate failing hardware. However, it does indicate a busy disk, and if it happens a lot you should probably add swap space on another drive (already done, unfortunately) and/or more memory. I saw this question a lot in the archives. Would this be a good one for the FAQ? Jim To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message