linux-kernel - Re: POHMELFS high performance network filesystem. Transactions, failover, performance.

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Message-ID: <20080514223155.GA19570@2ka.mipt.ru>
Date:	Thu, 15 May 2008 02:32:03 +0400
From:	Evgeniy Polyakov <johnpol@....mipt.ru>
To:	Jamie Lokier <jamie@...reable.org>
Cc:	Jeff Garzik <jeff@...zik.org>, Sage Weil <sage@...dream.net>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	linux-fsdevel@...r.kernel.org
Subject: Re: POHMELFS high performance network filesystem. Transactions, failover, performance.

On Wed, May 14, 2008 at 10:57:06PM +0100, Jamie Lokier (jamie@...reable.org) wrote:
> 
> If desired, arrange it in a tree to reduce even the microseconds.
> 
> Such network hardware is quite feasible, indeed quite easy with an
> FPGA based NIC.
> 
> Enjoy the speed :-)

And if client-server link is fully saturated by messages
we do not win :) We also lose if client-server is slower than
server-server... I completely agree that there are cases where each
approach is more beneficial, and likely client-to-many os better in
terms of management and/or failover, but for speed there is always a
different side of the coin.

-- 
	Evgeniy Polyakov
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