From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (ozlabs.org [203.10.76.45]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "mx.ozlabs.org", Issuer "CA Cert Signing Authority" (verified OK)) by bilbo.ozlabs.org (Postfix) with ESMTPS id B5557B6F44 for ; Fri, 26 Jun 2009 04:38:16 +1000 (EST) Received: from fg-out-1718.google.com (fg-out-1718.google.com [72.14.220.155]) by ozlabs.org (Postfix) with ESMTP id E8D46DDD01 for ; Fri, 26 Jun 2009 04:38:14 +1000 (EST) Received: by fg-out-1718.google.com with SMTP id e21so233940fga.16 for ; Thu, 25 Jun 2009 11:38:12 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: References: Date: Fri, 26 Jun 2009 00:08:12 +0530 Message-ID: Subject: Slowing down the schedular, How? From: kernel mailz To: linuxppc-dev@ozlabs.org Content-Type: text/plain; charset=ISO-8859-1 List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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