From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sven-Thorsten Dietrich Subject: Re: Interrupt Bottom Half Scheduling Date: Mon, 14 Feb 2011 15:04:03 -0800 Message-ID: <1297724643.10271.16.camel@quadrophenia> References: Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: linux-rt-users@vger.kernel.org To: Peter LaDow Return-path: Received: from mail-ww0-f44.google.com ([74.125.82.44]:37578 "EHLO mail-ww0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751025Ab1BNXEK (ORCPT ); Mon, 14 Feb 2011 18:04:10 -0500 Received: by wwa36 with SMTP id 36so5475819wwa.1 for ; Mon, 14 Feb 2011 15:04:09 -0800 (PST) In-Reply-To: Sender: linux-rt-users-owner@vger.kernel.org List-ID: On Mon, 2011-02-14 at 14:31 -0800, Peter LaDow wrote: > How is the scheduling of the hrtimers softirq thread handled? > > When querying the RT priority of the hrtimer softirq, I get a priority > of 50. But when running a priority 99 thread, we still seem to be > getting interrupted. Shouldn't the hrtimer softirq be put off until > the CPU is idle or a lower priority task is running? Does your prio 99 thread perhaps encounter a prio inversion dependency on one of the softriq threads? > > Thanks, > Pete > -- > To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html