From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754714AbZFYSgh (ORCPT ); Thu, 25 Jun 2009 14:36:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752606AbZFYSga (ORCPT ); Thu, 25 Jun 2009 14:36:30 -0400 Received: from fg-out-1718.google.com ([72.14.220.155]:52678 "EHLO fg-out-1718.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751304AbZFYSga (ORCPT ); Thu, 25 Jun 2009 14:36:30 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type :content-transfer-encoding; b=jWmjMjedNKOMLJNjomUA/55HQSfErFtN2QGX20D3PLrhDgKFsbDOKB43PK8b2TX8Ls 6rgXp7H9bywj15NNkOvzsHW4B62vKCReICunxfnCHba0SNmJ8Gl3wkPhXlRKMu+w7pQd rOs8555FbuZtk72ZaWeVNvkUJUj26afy44LXM= MIME-Version: 1.0 Date: Fri, 26 Jun 2009 00:06:32 +0530 Message-ID: Subject: Slowing down the schedular, How? From: kernel mailz To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, I have a SMP linux running on 85xx poweprc. Say on Core 0 and Core 1 two different processes are running and on both the schedular runs. Now for some special case, if one of my process issues a ioctl which gets serviced by a kernel module, I wish to slow the schedular on that core only. Otherwise the performance will get degraded. Should I use highest priority tasklet, will it be sufficient or i need to do something special -TZ