From: Rick Jones <rick.jones2@hp.com>
To: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
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.
Date: Mon, 14 Aug 2006 10:46:17 -0700 [thread overview]
Message-ID: <44E0B6E9.8050608@hp.com> (raw)
In-Reply-To: <20060814110359.GA27704@2ka.mipt.ru>
> 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?
rick jones
WARNING: multiple messages have this Message-ID (diff)
From: Rick Jones <rick.jones2@hp.com>
To: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
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.
Date: Mon, 14 Aug 2006 10:46:17 -0700 [thread overview]
Message-ID: <44E0B6E9.8050608@hp.com> (raw)
In-Reply-To: <20060814110359.GA27704@2ka.mipt.ru>
> 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?
rick jones
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next prev parent reply other threads:[~2006-08-14 17:46 UTC|newest]
Thread overview: 104+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-14 11:04 [PATCH 1/1] network memory allocator Evgeniy Polyakov
2006-08-14 11:04 ` Evgeniy Polyakov
2006-08-14 11:22 ` David Miller
2006-08-14 11:22 ` David Miller, Evgeniy Polyakov
2006-08-14 11:32 ` Evgeniy Polyakov
2006-08-14 11:32 ` Evgeniy Polyakov
2006-08-14 11:40 ` Andi Kleen
2006-08-14 11:40 ` Andi Kleen
2006-08-14 11:46 ` Evgeniy Polyakov
2006-08-14 11:46 ` Evgeniy Polyakov
2006-08-14 12:07 ` Keith Owens
2006-08-14 12:07 ` Keith Owens
2006-08-14 12:20 ` Evgeniy Polyakov
2006-08-14 12:20 ` Evgeniy Polyakov
2006-08-14 17:42 ` Rick Jones
2006-08-14 17:42 ` Rick Jones
2006-08-14 20:15 ` David Miller
2006-08-14 20:15 ` David Miller, Rick Jones
2006-08-14 12:25 ` Peter Zijlstra
2006-08-14 12:25 ` Peter Zijlstra
2006-08-14 12:35 ` Evgeniy Polyakov
2006-08-14 12:35 ` Evgeniy Polyakov
2006-08-14 12:38 ` Evgeniy Polyakov
2006-08-14 12:38 ` Evgeniy Polyakov
2006-08-15 10:55 ` Peter Zijlstra
2006-08-15 10:55 ` Peter Zijlstra
2006-08-15 11:26 ` Evgeniy Polyakov
2006-08-15 11:26 ` Evgeniy Polyakov
2006-08-15 12:03 ` Peter Zijlstra
2006-08-15 12:03 ` Peter Zijlstra
2006-08-15 12:34 ` Evgeniy Polyakov
2006-08-15 12:34 ` Evgeniy Polyakov
2006-08-15 13:49 ` Peter Zijlstra
2006-08-15 13:49 ` Peter Zijlstra
2006-08-15 14:15 ` Evgeniy Polyakov
2006-08-15 14:15 ` Evgeniy Polyakov
2006-08-15 14:48 ` Peter Zijlstra
2006-08-15 14:48 ` Peter Zijlstra
2006-08-15 15:05 ` Evgeniy Polyakov
2006-08-15 15:05 ` Evgeniy Polyakov
2006-08-15 15:07 ` Evgeniy Polyakov
2006-08-15 15:07 ` Evgeniy Polyakov
2006-08-15 17:42 ` Peter Zijlstra
2006-08-15 17:42 ` Peter Zijlstra
2006-08-15 17:49 ` Evgeniy Polyakov
2006-08-15 17:49 ` Evgeniy Polyakov
2006-08-16 2:52 ` Bill Fink
2006-08-16 2:52 ` Bill Fink
2006-08-16 5:38 ` Evgeniy Polyakov
2006-08-16 5:38 ` Evgeniy Polyakov
2006-08-14 17:46 ` Rick Jones [this message]
2006-08-14 17:46 ` Rick Jones
2006-08-14 19:42 ` Evgeniy Polyakov
2006-08-14 19:42 ` Evgeniy Polyakov
2006-08-15 7:27 ` Andrew Morton
2006-08-15 7:27 ` Andrew Morton
2006-08-15 8:08 ` Andi Kleen
2006-08-15 8:08 ` Andi Kleen
2006-08-15 10:02 ` Evgeniy Polyakov
2006-08-15 10:02 ` Evgeniy Polyakov
2006-08-15 10:27 ` David Miller
2006-08-15 10:27 ` David Miller, Evgeniy Polyakov
2006-08-15 9:20 ` Evgeniy Polyakov
2006-08-15 9:20 ` Evgeniy Polyakov
2006-08-15 20:21 ` Arnd Bergmann
2006-08-16 5:35 ` Evgeniy Polyakov
2006-08-16 8:48 ` Christoph Hellwig
2006-08-16 8:48 ` Christoph Hellwig
2006-08-16 9:00 ` Evgeniy Polyakov
2006-08-16 9:00 ` Evgeniy Polyakov
2006-08-16 9:05 ` David Miller
2006-08-16 9:05 ` David Miller, Evgeniy Polyakov
2006-08-16 9:10 ` Christoph Hellwig
2006-08-16 9:10 ` Christoph Hellwig
2006-08-16 9:32 ` Evgeniy Polyakov
2006-08-16 9:32 ` Evgeniy Polyakov
2006-08-16 9:38 ` Christoph Hellwig
2006-08-16 9:38 ` Christoph Hellwig
2006-08-16 9:40 ` David Miller
2006-08-16 9:40 ` David Miller, Christoph Hellwig
2006-08-16 9:44 ` Christoph Hellwig
2006-08-16 9:44 ` Christoph Hellwig
2006-08-16 9:42 ` Christoph Hellwig
2006-08-16 9:42 ` Christoph Hellwig
2006-08-16 11:27 ` Arnd Bergmann
2006-08-16 11:27 ` Arnd Bergmann
2006-08-16 12:00 ` Evgeniy Polyakov
2006-08-16 12:00 ` Evgeniy Polyakov
2006-08-16 12:25 ` Andi Kleen
2006-08-16 12:25 ` Andi Kleen
2006-08-18 2:25 ` Christoph Lameter
2006-08-18 2:25 ` Christoph Lameter
2006-08-18 9:29 ` Andi Kleen
2006-08-18 9:29 ` Andi Kleen
2006-08-18 8:51 ` David Miller
2006-08-18 8:51 ` David Miller, Andi Kleen
2006-08-18 17:04 ` Christoph Lameter
2006-08-18 17:04 ` Christoph Lameter
2006-08-16 7:51 ` [PATCH2 " Evgeniy Polyakov
2006-08-16 7:51 ` Evgeniy Polyakov
2006-08-16 16:57 ` Stephen Hemminger
2006-08-16 16:57 ` Stephen Hemminger
2006-08-16 19:27 ` Evgeniy Polyakov
2006-08-16 19:27 ` Evgeniy Polyakov
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