From owner-freebsd-questions@FreeBSD.ORG Mon May 25 19:42:46 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 7605D1065670 for ; Mon, 25 May 2009 19:42:46 +0000 (UTC) (envelope-from peter@boosten.org) Received: from smtpq1.gn.mail.iss.as9143.net (smtpq1.gn.mail.iss.as9143.net [212.54.34.164]) by mx1.freebsd.org (Postfix) with ESMTP id EEBAA8FC19 for ; Mon, 25 May 2009 19:42:45 +0000 (UTC) (envelope-from peter@boosten.org) Received: from [212.54.34.136] (helo=smtp5.gn.mail.iss.as9143.net) by smtpq1.gn.mail.iss.as9143.net with esmtp (Exim 4.69) (envelope-from ) id 1M8g4L-0006iV-9H; Mon, 25 May 2009 21:42:45 +0200 Received: from [84.25.72.219] (helo=ra.egypt.nl) by smtp5.gn.mail.iss.as9143.net with esmtp (Exim 4.69) (envelope-from ) id 1M8g4I-0007zP-FV; Mon, 25 May 2009 21:42:42 +0200 Received: from mbp.egypt.nl (mbp.egypt.nl [192.168.13.33]) by ra.egypt.nl (Postfix) with ESMTP id 66C733983B; Mon, 25 May 2009 21:42:41 +0200 (CEST) Message-Id: <29229B06-6098-4488-9E9A-A5CFE6F9643B@boosten.org> From: Peter Boosten To: Wojciech Puchar In-Reply-To: Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v935.3) Date: Mon, 25 May 2009 21:42:40 +0200 References: <200905241315.n4ODFB96007801@mp.cs.niu.edu> <4A1A58FA.60303@boosten.org> <1932D812-03CF-48AF-A306-669C39862EB7@boosten.org> X-Mailer: Apple Mail (2.935.3) X-ZiggoSMTP-MailScanner-Information: Please contact the ISP for more information X-ZiggoSMTP-MailScanner-ID: 1M8g4I-0007zP-FV X-ZiggoSMTP-MailScanner: Found to be clean X-ZiggoSMTP-MailScanner-SpamCheck: not spam, SpamAssassin (not cached, score=-0.741, required 5, autolearn=not spam, BAYES_20 -0.74, SPF_PASS -0.00) X-ZiggoSMTP-MailScanner-From: peter@boosten.org X-Spam-Status: No Cc: Yuri , Scott Bennett , freebsd-questions@freebsd.org, utisoft@gmail.com Subject: Re: How can this 'top' command output make sense? Load over 7 and total CPU use ~5% X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 May 2009 19:42:46 -0000 On 25 mei 2009, at 21:37, Wojciech Puchar wrote: >> The CPU = "Central Processing Unit" will perform it's calculations >> at so many megahertz while at 10% utilization or at 100% >> utilization. The entire machine > > no. it will not. all today x86 CPUs reacts on HLT command and > doesn't do anything except waiting for interrupt (and saving lots of > power). > Do you actually read back what you write: you're saying here that when a CPU has only 10% utilization, it'll run slower than when performing at 100%... I'm giving up ;-) Peter -- http://www.boosten.org