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Date:      Tue, 31 Oct 2006 10:13:44 +0100
From:      Ivan Voras <ivoras@fer.hr>
To:        freebsd-stable@freebsd.org
Subject:   Re: SAS Raid - mfi driver
Message-ID:  <ei7448$4rs$1@sea.gmane.org>
In-Reply-To: <45470D95.5020801@qbrick.com>
References:  <45470D95.5020801@qbrick.com>

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Fredrik Widlund wrote:

> setups but hit the same limitation again and again. The strange part is
> that a Dell raid adapter based on the same chipset, the Perc 5/I, works
> well with writes achieving 200MB/s.
> 
> Any ideas would be greatly appreciated.

Several:

- are there cache differences between the controllers (amount of memory, 
cache policy)?
- how does writing directly to the device (bypassing file system) compare?




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