Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1765289AbYCEKTu (ORCPT ); Wed, 5 Mar 2008 05:19:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761683AbYCEKTm (ORCPT ); Wed, 5 Mar 2008 05:19:42 -0500 Received: from cantor2.suse.de ([195.135.220.15]:34825 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761071AbYCEKTl (ORCPT ); Wed, 5 Mar 2008 05:19:41 -0500 To: Eric Dumazet Cc: David Miller , dmantipov@yandex.ru, linux-kernel@vger.kernel.org Subject: Re: Are Linux pipes slower than the FreeBSD ones ? From: Andi Kleen References: <1389671204703217@webmail34.yandex.ru> <20080305.000014.245410231.davem@davemloft.net> <47CE6C41.3090303@cosmosbay.com> Date: Wed, 05 Mar 2008 11:19:36 +0100 In-Reply-To: <47CE6C41.3090303@cosmosbay.com> (Eric Dumazet's message of "Wed\, 05 Mar 2008 10\:47\:45 +0100") Message-ID: User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 625 Lines: 17 Eric Dumazet writes: > > This benchmarek mostly stress scheduler AFAIK, not really pipe() code... > > Lot of context switches... The recent mysql sysbench benchmark where they also won was also such a (somewhat unrealistic) scheduler benchmark with a lot of over scheduling. Just speculating here, but perhaps the context switch got slower recently? -Andi -- 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/