linux-kernel - Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3

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Date:	Thu, 1 Mar 2007 20:56:44 +0300
From:	Evgeniy Polyakov <johnpol@....mipt.ru>
To:	David Lang <david.lang@...italinsight.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Pavel Machek <pavel@....cz>,
	Theodore Tso <tytso@....edu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ulrich Drepper <drepper@...hat.com>,
	linux-kernel@...r.kernel.org,
	Arjan van de Ven <arjan@...radead.org>,
	Christoph Hellwig <hch@...radead.org>,
	Andrew Morton <akpm@....com.au>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Zach Brown <zach.brown@...cle.com>,
	"David S. Miller" <davem@...emloft.net>,
	Suparna Bhattacharya <suparna@...ibm.com>,
	Davide Libenzi <davidel@...ilserver.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3

On Thu, Mar 01, 2007 at 08:56:28AM -0800, David Lang (david.lang@...italinsight.com) wrote:
> the ab numbers below do not seem that impressive to me, especially for such 
> stripped down server processes.
...
> client and server are dual opteron 252 with 8G of ram, running debian in 64 
> bit mode

Decrease your hardware setup in 2-4 times, leave only one apache process 
and try to get the same - we are not talking about how to create a
perfect web server, instead we try to focus possible problems in
epoll/kevent event driven logic.

Vanilla (epoll) lighttpd shows 4000-5000 requests per second in my setup (no logs).
Default mpm-apache2 with bunch of threads - about 8k req/s.
Default thttpd (disabled logging) - about 2k req/s

Btw, all your tests are network bound, try to decrease 
html page size to get actual event processing speed out of that machines.

-- 
	Evgeniy Polyakov
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