Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965278AbbD0VcI (ORCPT ); Mon, 27 Apr 2015 17:32:08 -0400 Received: from mail-ie0-f179.google.com ([209.85.223.179]:36603 "EHLO mail-ie0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965169AbbD0VcD convert rfc822-to-8bit (ORCPT ); Mon, 27 Apr 2015 17:32:03 -0400 MIME-Version: 1.0 In-Reply-To: <553A4A2F.5090406@samsung.com> References: <20150413190350.GA9485@kroah.com> <20150423130548.GA4253@kroah.com> <20150423163616.GA10874@kroah.com> <20150423171640.GA11227@kroah.com> <553A4A2F.5090406@samsung.com> Date: Mon, 27 Apr 2015 14:32:01 -0700 X-Google-Sender-Auth: 195o42lpWu0B1ue8PDJ_qHaJldE Message-ID: Subject: Re: [GIT PULL] kdbus for 4.1-rc1 From: Linus Torvalds To: Lukasz Skalski Cc: Greg Kroah-Hartman , Andy Lutomirski , Andrew Morton , Arnd Bergmann , "Eric W. Biederman" , One Thousand Gnomes , Tom Gundersen , Jiri Kosina , "linux-kernel@vger.kernel.org" , Daniel Mack , David Herrmann , Djalal Harouni Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1073 Lines: 28 On Fri, Apr 24, 2015 at 6:50 AM, Lukasz Skalski wrote: > > To perform tests I've created two simple apps: > > - server: http://fpaste.org/215157/ > - client: http://fpaste.org/215156/ So since Andy reported that dbus seems to be a few orders of magnitude too slow, I tried to build these apps to see what it even does. They don't buidl on F21. You seem to be using features that are too new to exist even in fairly modern distros: server.c:47:24: error: ‘G_BUS_TYPE_USER’ undeclared so I can't even see what dbus does *now*. That said, either you're running your test on a potato, or dbus is seriously screwed up. No way should it take 4+ seconds to send a 1000b message to back and forth 20k times. But as mentioned, I can't even see what it's doing right now. Linus -- 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/