From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keir Fraser Subject: Re: bad interaction between boosted idle vcpus and csched's tickling? Date: Tue, 11 May 2010 11:14:40 +0100 Message-ID: References: <4BE4255B0200007800001C89@vpn.id2.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4BE4255B0200007800001C89@vpn.id2.novell.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Jan Beulich Cc: "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org On 07/05/2010 13:36, "Jan Beulich" wrote: > Keir, > > isn't there a problem after the change to handle tasklets in idle vcpus > in that {default,acpi_processor}_idle() will put the vcpu to sleep with > boosted priority still in place, hence preventing it from being tickled > and/or needlessly tickling other CPUs? Should be resolved by xen-unstable:21344. -- Keir