Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261588AbVBWVEu (ORCPT ); Wed, 23 Feb 2005 16:04:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261590AbVBWVEu (ORCPT ); Wed, 23 Feb 2005 16:04:50 -0500 Received: from bay-bridge.veritas.com ([143.127.3.10]:45305 "EHLO MTVMIME01.enterprise.veritas.com") by vger.kernel.org with ESMTP id S261588AbVBWVEk (ORCPT ); Wed, 23 Feb 2005 16:04:40 -0500 Date: Wed, 23 Feb 2005 21:03:55 +0000 (GMT) From: Hugh Dickins X-X-Sender: hugh@goblin.wat.veritas.com To: Lee Revell cc: Nick Piggin , Ingo Molnar , Andrew Morton , linux-kernel Subject: Re: More latency regressions with 2.6.11-rc4-RT-V0.7.39-02 In-Reply-To: <1109190614.3126.1.camel@krustophenia.net> Message-ID: References: <1109182061.16201.6.camel@krustophenia.net> <1109187381.3174.5.camel@krustophenia.net> <1109190614.3126.1.camel@krustophenia.net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 673 Lines: 17 On Wed, 23 Feb 2005, Lee Revell wrote: > > > > > > Thanks, your patch fixes the copy_pte_range latency. > > clear_page_range is also problematic. Yes, I saw that from your other traces too. I know there are plans to improve clear_page_range during 2.6.12, but I didn't realize that it had become very much worse than its antecedent clear_page_tables, and I don't see missing latency fixes for that. Nick's the expert. Hugh - 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/