From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay02.roc.ny.frontiernet.net (relay02.roc.ny.frontiernet.net [66.133.182.165]) by ozlabs.org (Postfix) with ESMTP id AEA8F67B61 for ; Thu, 16 Jun 2005 01:12:23 +1000 (EST) Message-ID: <00c601c571bc$be6c8320$0301a8c0@chuck2> From: "Mark Chambers" To: "Schaefer-Hutter, Peter" , References: <8E342283C2100540AAC5D1030970547766F7A1@rcexc.racoms.loc> Date: Wed, 15 Jun 2005 11:13:05 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Subject: Re: 2.4.26 and MPC885 context switching time List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , >Hi all, > >i'm evaluating IPC on the MPC885ADS and discovered >that the context switching times seem to be quite >disappointing (up to 1ms). As we need to do a lot >of IPC later on, i'm interested bringing the time >down. > >Therefore i wonder, if there are any known problems >with the MMU on 8xx and 2.4.2x which might explain >that? Maybe it would help if you gave more detail about how you are measuring these times in your system. I'm interested to know the answer to this myself! Mark Chambers