From owner-freebsd-current Sun Nov 12 11:24:29 1995 Return-Path: owner-current Received: (from root@localhost) by freefall.freebsd.org (8.6.12/8.6.6) id LAA19971 for current-outgoing; Sun, 12 Nov 1995 11:24:29 -0800 Received: from ast.com (irvine.ast.com [165.164.128.2]) by freefall.freebsd.org (8.6.12/8.6.6) with SMTP id LAA19951 for ; Sun, 12 Nov 1995 11:24:26 -0800 Received: from fw.ast.com by ast.com with SMTP id AA15340 (5.67b/IDA-1.5 for ); Sun, 12 Nov 1995 11:25:44 -0800 Received: from nemesis by fw.ast.com with uucp (Smail3.1.29.1 #4) id m0tEhwP-00008RC; Sun, 12 Nov 95 13:19 CST Received: by nemesis.lonestar.org (Smail3.1.27.1 #19) id m0tEhqS-000J05C; Sun, 12 Nov 95 13:13 WET Message-Id: Date: Sun, 12 Nov 95 13:13 WET To: dufault@hda.com, current@freebsd.org From: uhclem%nemesis@fw.ast.com (Frank Durda IV) Sent: Sun Nov 12 1995, 13:13:36 CST Subject: Re: Disk I/O that binds Sender: owner-current@freebsd.org Precedence: bulk [0]1. A concern that FreeBSD tends to "bind" for brief periods when [0] loaded... [1]Can this is an IDE issue? I never saw anything like this until [1]I configured an IDE mail server. That system pauses for seconds [1]sometimes, and then continues. This is running -stable, syscons [1]only (no X), no messages logged, etc. The echo stops going to [1]the display, the ethernet activity is stopped, all in all it seems [1]to be locked up for three or four seconds. I just called the guy that reported this - he is a 100% SCSI shop, mostly Adaptecs with the odd NCR. He didn't have model numbers of the controllers handy. The drives are all Seagate 2G and 4G, some Baracuda, all SCSI II, none wide. My system where I have seen something that somewhat resembles his description is a mixed IDE SCSI system, and when things bog, the hog process and the binding process are both trying to get to the same SCSI drive. The IDE is for swap and root and is idle during these events. And in answer to someone elses' question, there was no tape I/O or CD-ROM I/O active during these events on either system. Only SCSI disk. Frank Durda IV |"The Knights who say "LETNi" or uhclem%nemesis@fw.ast.com (Fastest Route)| demand... A SEGMENT REGISTER!!!" ...letni!rwsys!nemesis!uhclem |"A what?" ...decvax!fw.ast.com!nemesis!uhclem |"LETNi! LETNi! LETNi!" - 1983