From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.12] helo=sc8-sf-mx2.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Cipher TLSv1:DES-CBC3-SHA:168) (Exim 3.31-VA-mm2 #1 (Debian)) id 1ADqEj-00069b-00 for ; Sun, 26 Oct 2003 11:07:37 -0800 Received: from lakshmi.addtoit.com ([198.99.130.6] helo=lakshmi.solana.com) by sc8-sf-mx2.sourceforge.net with esmtp (Exim 4.24) id 1ADqCV-0000Y5-VZ for user-mode-linux-devel@lists.sourceforge.net; Sun, 26 Oct 2003 11:05:20 -0800 Received: from ccure.karaya.com (lakshmi.solana.com [127.0.0.1]) by lakshmi.solana.com (8.11.2/8.9.3) with ESMTP id h9QIrLj09715 for ; Sun, 26 Oct 2003 13:53:24 -0500 Message-Id: <200310261909.h9QJ92CN012291@ccure.karaya.com> Subject: Re: [uml-devel] Problem with Real-Time Scheduling In-Reply-To: Your message of "Sun, 26 Oct 2003 16:20:30 +1100." <000001c39b80$e011fbe0$3d4bd540@celery> References: <000001c39b80$e011fbe0$3d4bd540@celery> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii From: Jeff Dike Sender: user-mode-linux-devel-admin@lists.sourceforge.net Errors-To: user-mode-linux-devel-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Id: The user-mode Linux development list List-Unsubscribe: , List-Archive: Date: Sun, 26 Oct 2003 14:09:02 -0500 To: ralston@stral.net Cc: user-mode-linux-devel@lists.sourceforge.net ralston@stral.net said: > I've come across a problem with running a user-mode-linux instance > with RR-Scheduling. When I attempt to start a server with chrt the > host system panics. I can start a uml in normal (other) scheduling, > and then change it to RR-Scheduling and it works fine, until I try to > stop the uml... then I get the same kernel panic. Any time the host panics, it's time to send the details to LKML. > how would different scheduling the different 'threads' of the UML > effect performance? As far as I know.. the first 'linux' process > actually does all the work and the extra processes are for the > different IO the UML does, eg network, block devices etc? Would > increasing the priority of the IO over the priority of the main > process have an effect on network performance for example? In skas mode, the first process runs the kernel, the second runs processes, and the other two handle SIGIO emulation and SIGWINCHes. So, those two don't matter, and first two are never running at the same time, so their relative priorities don't matter. Jeff ------------------------------------------------------- This SF.net email is sponsored by: The SF.net Donation Program. Do you like what SourceForge.net is doing for the Open Source Community? Make a contribution, and help us add new features and functionality. Click here: http://sourceforge.net/donate/ _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel