Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756209AbZCZNtu (ORCPT ); Thu, 26 Mar 2009 09:49:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753856AbZCZNtm (ORCPT ); Thu, 26 Mar 2009 09:49:42 -0400 Received: from 205.158.150.226.ptr.us.xo.net ([205.158.150.226]:2377 "EHLO mail.exegy.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753037AbZCZNtl convert rfc822-to-8bit (ORCPT ); Thu, 26 Mar 2009 09:49:41 -0400 thread-index: AcmuGbUsyLyEJWnRSeG0fjzXEts4yg== X-Ninja-AntiSpoofing: spoofed Message-ID: <49CB87F3.7060506@exegy.com> Date: Thu, 26 Mar 2009 08:49:39 -0500 From: "Mr. Berkley Shands" User-Agent: Thunderbird 2.0.0.19 (X11/20090107) MIME-Version: 1.0 To: "linux-kernel" Subject: low priority 2.6.29 curiosity in interrupt time accounting Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7BIT Content-Class: urn:content-classes:message Importance: normal X-OriginalArrivalTime: 26 Mar 2009 13:49:39.0297 (UTC) FILETIME=[B5202D10:01C9AE19] X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.4325 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1515 Lines: 39 Under 2.6.28-8, top reports up to 78% "hi" hard interrupt time when (not using NAPI) on heavy network traffic. top also reports up to 38% "hi" time for heavy infiniband traffic. Under 2.6.29-0, top reports NO time in "si" or "hi", 100% idle, even while processing the exact same heavy I/O load. Is top not looking in the right place or did something else move? The system load averages look right for the number of threads active. Berkley -- // E. F. Berkley Shands, MSc// ** Exegy Inc.** 349 Marshall Road, Suite 100 St. Louis , MO 63119 Direct: (314) 218-3600 X450 Cell: (314) 303-2546 Office: (314) 218-3600 Fax: (314) 218-3601 The Usual Disclaimer follows... This e-mail and any documents accompanying it may contain legally privileged and/or confidential information belonging to Exegy, Inc. Such information may be protected from disclosure by law. The information is intended for use by only the addressee. If you are not the intended recipient, you are hereby notified that any disclosure or use of the information is strictly prohibited. If you have received this e-mail in error, please immediately contact the sender by e-mail or phone regarding instructions for return or destruction and do not use or disclose the content to others. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/