From owner-freebsd-questions@FreeBSD.ORG Mon May 3 16:00:59 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 82D6F106564A for ; Mon, 3 May 2010 16:00:59 +0000 (UTC) (envelope-from cronfy@gmail.com) Received: from mail-iw0-f180.google.com (mail-iw0-f180.google.com [209.85.223.180]) by mx1.freebsd.org (Postfix) with ESMTP id 4E7C68FC2A for ; Mon, 3 May 2010 16:00:59 +0000 (UTC) Received: by iwn10 with SMTP id 10so3503091iwn.13 for ; Mon, 03 May 2010 09:00:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:mime-version:received:from:date :message-id:subject:to:content-type; bh=cC9tH14/iLxpJMfIi490Se/N+p+GrVGHTUJvvn15jWM=; b=LxZ4qa7ic2KS+EpX+XbHe4V1PYEJ7j/gIsKX1T9XMtFJ0MBcgyCdVpmu32bJztz7LN ma3HHKyYLUKWo8JXbA0U1IsXYkuu63cSa7ablsOhe7eQSmgo2Amvy6hlvj5B5185w3wU tWouYqL6DG382JWd3uJykGVJ/yzPPViwjapw8= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:from:date:message-id:subject:to:content-type; b=VjGdOM9k5EDi05j3mYhQU2iu9+qbaJrH1HgzBiOFCOMUMCdM6L6lJ3RHF920yMW+ch f/wW3JVhIUCvQ1S3aGNC3Q6BMkjPyhen5jnkGs4ETasu0YIS/uqpo0SQUJ7cheF8dLnH FtO/gIDsgUmqOHzmhvAmPDoH2ilR6/CjvXAd8= Received: by 10.231.146.19 with SMTP id f19mr1201985ibv.92.1272902441578; Mon, 03 May 2010 09:00:41 -0700 (PDT) MIME-Version: 1.0 Received: by 10.231.59.73 with HTTP; Mon, 3 May 2010 09:00:11 -0700 (PDT) From: cronfy Date: Mon, 3 May 2010 20:00:11 +0400 Message-ID: To: freebsd-questions Content-Type: text/plain; charset=ISO-8859-1 Subject: User cpu time VS system cpu time 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, 03 May 2010 16:00:59 -0000 Hello, I want to understand difference between user CPU time and system CPU time in system accounting. When some process uses many system CPU, does it really mean that process prouduces heavy load on server and takes up resources that could be used by other tasks instead? Or it only means that this process performs many waits for, say, I/O operations? Thanks in advance! -- // cronfy