From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sebastian Andrzej Siewior Subject: Re: [PATCH] Force processes to non-realtime before mm_exit Date: Thu, 12 May 2016 10:59:46 +0200 Message-ID: <20160512085946.GB19035@linutronix.de> References: <1462903464-11448-1-git-send-email-brian@peloton-tech.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Cc: linux-rt-users@vger.kernel.org To: Brian Silverman Return-path: Received: from www.linutronix.de ([62.245.132.108]:52338 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932351AbcELI7s (ORCPT ); Thu, 12 May 2016 04:59:48 -0400 Content-Disposition: inline In-Reply-To: <1462903464-11448-1-git-send-email-brian@peloton-tech.com> Sender: linux-rt-users-owner@vger.kernel.org List-ID: * Brian Silverman | 2016-05-10 14:04:24 [-0400]: >Without this, a realtime process which has called mlockall exiting >causes large latencies for other realtime processes at the same or >lower priorities. This seems like a fairly common use case too, because >realtime processes generally want their memory locked into RAM. Can please explain more detailed what exactly causes the high latencies? Sebastian