Date: Mon, 14 Aug 2006 23:42:01 +0400
From: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
To: Rick Jones <rick.jones2@hp.com>
Cc: David Miller <davem@davemloft.net>, netdev@vger.kernel.org,
       linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH 1/1] network memory allocator.
Message-ID: <20060814194201.GA10747@2ka.mipt.ru>
References: <20060814110359.GA27704@2ka.mipt.ru> <44E0B6E9.8050608@hp.com>
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On Mon, Aug 14, 2006 at 10:46:17AM -0700, Rick Jones (rick.jones2@hp.com) wrote:
> >Benchmarks with trivial epoll based web server showed noticeble (more
> >than 40%) imrovements of the request rates (1600-1800 requests per
> >second vs. more than 2300 ones). It can be described by more
> >cache-friendly freeing algorithm, by tighter objects packing and thus
> >reduced cache line ping-pongs, reduced lookups into higher-layer caches
> >and so on.
> 
> Is that an hypothesis, or did you get a chance to gather cache stats 
> with something like http://www.hp.com/go/Caliper or the like on the 
> platform(s) you were testing?

It is theory based on code observation, design comparison and logic.

> rick jones

-- 
	Evgeniy Polyakov
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