Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S274824AbTHFD6m (ORCPT ); Tue, 5 Aug 2003 23:58:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S274846AbTHFD6l (ORCPT ); Tue, 5 Aug 2003 23:58:41 -0400 Received: from gateway-1237.mvista.com ([12.44.186.158]:37366 "EHLO hermes.mvista.com") by vger.kernel.org with ESMTP id S274824AbTHFD6X (ORCPT ); Tue, 5 Aug 2003 23:58:23 -0400 Subject: Re: [patch] real-time enhanced page allocator and throttling From: Robert Love To: Andrew Morton Cc: linux-kernel@vger.kernel.org, Valdis.Kletnieks@vt.edu, piggin@cyberone.com.au, kernel@kolivas.org, linux-mm@kvack.org In-Reply-To: <20030805174536.6cb5fbf0.akpm@osdl.org> References: <1060121638.4494.111.camel@localhost> <20030805170954.59385c78.akpm@osdl.org> <1060130368.4494.166.camel@localhost> <20030805174536.6cb5fbf0.akpm@osdl.org> Content-Type: text/plain Message-Id: <1060142290.4494.197.camel@localhost> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.3 (1.4.3-5) Date: 05 Aug 2003 20:58:11 -0700 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 773 Lines: 21 On Tue, 2003-08-05 at 17:45, Andrew Morton wrote: > It's testing time. Just via some instrumenting, I can see that a real-time task never begins throttling and this translates to a ~1ms reduction in worst case allocation on a fast machine latency under extreme page dirtying and writeback (basically, I cannot reproduce any variation in page allocation, now, for a real-time test app). So it works. But I do not have any real world test to confirm a benefit, which is what matters. Have you poked and prodded? Robert Love - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/