From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753348Ab0IILft (ORCPT ); Thu, 9 Sep 2010 07:35:49 -0400 Received: from bombadil.infradead.org ([18.85.46.34]:33458 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751408Ab0IILfr convert rfc822-to-8bit (ORCPT ); Thu, 9 Sep 2010 07:35:47 -0400 Subject: Re: perf events over (net) console? From: Peter Zijlstra To: Frederic Weisbecker Cc: Harald Gustafsson , linux-kernel , Harald Gustafsson , Song Yuan , Steven Rostedt In-Reply-To: <20100909112940.GA5267@nowhere> References: <1284031141.402.1.camel@laptop> <20100909112940.GA5267@nowhere> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Date: Thu, 09 Sep 2010 13:35:42 +0200 Message-ID: <1284032142.402.5.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2010-09-09 at 13:29 +0200, Frederic Weisbecker wrote: > But if we bring the splice support, Even simply write() from the mmap() buffer isn't terribly expensive. But yeah, once we fix splice not to always copy that could be even better. Splice() is on the todo list, but it needs significant user-interface work and I'm rather busy..