From owner-freebsd-performance@FreeBSD.ORG Wed Mar 7 22:04:46 2007 Return-Path: X-Original-To: freebsd-performance@freebsd.org Delivered-To: freebsd-performance@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 4BA0116A46C for ; Wed, 7 Mar 2007 22:04:46 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from mail-out4.apple.com (mail-out4.apple.com [17.254.13.23]) by mx1.freebsd.org (Postfix) with ESMTP id D5D9013C441 for ; Wed, 7 Mar 2007 22:04:45 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from relay8.apple.com (relay8.apple.com [17.128.113.38]) by mail-out4.apple.com (8.13.8/8.13.8) with ESMTP id l27LOIao006602; Wed, 7 Mar 2007 13:24:18 -0800 (PST) Received: from relay8.apple.com (unknown [127.0.0.1]) by relay8.apple.com (Symantec Mail Security) with ESMTP id 943C4404EE; Wed, 7 Mar 2007 13:24:18 -0800 (PST) X-AuditID: 11807126-9f797bb0000007dd-5d-45ef2d824546 Received: from [17.214.13.96] (cswiger1.apple.com [17.214.13.96]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by relay8.apple.com (Apple SCV relay) with ESMTP id 828FF40024; Wed, 7 Mar 2007 13:24:18 -0800 (PST) In-Reply-To: References: Mime-Version: 1.0 (Apple Message framework v752.2) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: Content-Transfer-Encoding: 7bit From: Chuck Swiger Date: Wed, 7 Mar 2007 13:24:17 -0800 To: vivek.prasannan@gmail.com X-Mailer: Apple Mail (2.752.2) X-Brightmail-Tracker: AAAAAA== Cc: freebsd-performance@freebsd.org, User Questions Subject: Re: w hangs before loading X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: User Questions List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Mar 2007 22:04:46 -0000 On Mar 7, 2007, at 12:41 PM, Vivek Prasannan wrote: [ ...cross-posting between freebsd-questions and other FreeBSD lists is generally not encouraged; Reply-To: set... ] > When I type the command 'w' it holds for a while before printing > the output. > There is no firewall in the system, load average is below 0.8 and I > suspect > it is something else. Any thoughts on this. The 'w' command attempts to look up the hostnames for any users which are remotely logged in. If you encounter a significant delay, that suggests that reverse DNS (aka PTR record lookups) is not properly configured or is performing slowly in your situation. -- -Chuck