Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965050AbXBYRzW (ORCPT ); Sun, 25 Feb 2007 12:55:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965054AbXBYRzV (ORCPT ); Sun, 25 Feb 2007 12:55:21 -0500 Received: from relay.2ka.mipt.ru ([194.85.82.65]:58028 "EHLO 2ka.mipt.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965050AbXBYRzU (ORCPT ); Sun, 25 Feb 2007 12:55:20 -0500 Date: Sun, 25 Feb 2007 20:44:38 +0300 From: Evgeniy Polyakov To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Linus Torvalds , Arjan van de Ven , Christoph Hellwig , Andrew Morton , Alan Cox , Ulrich Drepper , Zach Brown , "David S. Miller" , Suparna Bhattacharya , Davide Libenzi , Jens Axboe , Thomas Gleixner Subject: Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3 Message-ID: <20070225174438.GA13647@2ka.mipt.ru> References: <20070221211355.GA7302@elte.hu> <20070224183421.GA6835@2ka.mipt.ru> <20070225172337.GB4998@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=koi8-r Content-Disposition: inline In-Reply-To: <20070225172337.GB4998@elte.hu> User-Agent: Mutt/1.5.9i X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-3.0 (2ka.mipt.ru [0.0.0.0]); Sun, 25 Feb 2007 20:45:18 +0300 (MSK) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2471 Lines: 68 On Sun, Feb 25, 2007 at 06:23:38PM +0100, Ingo Molnar (mingo@elte.hu) wrote: > > * Evgeniy Polyakov wrote: > > > On Wed, Feb 21, 2007 at 10:13:55PM +0100, Ingo Molnar (mingo@elte.hu) wrote: > > > this is the v3 release of the syslet/threadlet subsystem: > > > > > > http://redhat.com/~mingo/syslet-patches/ > > > > There is no %xgs. > > > > --- ./arch/i386/kernel/process.c~ 2007-02-24 22:56:14.000000000 +0300 > > +++ ./arch/i386/kernel/process.c 2007-02-24 22:53:19.000000000 +0300 > > @@ -426,7 +426,6 @@ > > > > regs.xds = __USER_DS; > > regs.xes = __USER_DS; > > - regs.xgs = __KERNEL_PDA; > > hm, what tree are you using as a base? The syslet patches are against > v2.6.20 at the moment. (the x86 PDA changes will probably interfere with > it on v2.6.21-rc1-ish kernels) Note that otherwise the syslet/threadlet > patches are for x86 only at the moment (as i mentioned in the > announcement), and the generic code itself contains some occasional > x86-ishms as well. (None of the concepts are x86-specific though - > multi-stack architectures should work just as well as RISC-ish CPUs.) It is rc1 - and crashes. I test on i386 via epia (the only machine which runs x86 right now). If there will not be any new patches, I will create 2.6.20 test tree tomorrow. > if you create a threadlet based test-webserver, could you please do a > comparable kevents implementation as well? I.e. same HTTP parser (or > non-parser, as usually the case is with prototypes ;). Best would be > something that one could trigger between threadlet and kevent mode, > using the same binary :-) Ok, I will create such a monster tomorrow :) I will use the same base for threadlet as for kevent/epoll - there is no parser, just sendfile() of the static file which contains http header and actual page. threadlet1 { accept() create threadlet2 { send data } } Is above scheme correct for threadlet scenario? But note, that on my athlon64 3500 test machine kevent is about 7900 requests per second compared to 4000+ epoll, so expect a challenge. lighhtpd is about the same 4000 requests per second though, since it can not be easily optimized for kevents. > Ingo -- Evgeniy Polyakov - 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/