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Date:      Mon, 10 Jan 2011 13:49:08 +0100
From:      Ivan Voras <ivoras@freebsd.org>
To:        freebsd-performance@freebsd.org
Subject:   Re: Phoronix comparision of HAMMER, UFS, ZFS, EXT3, EXT4, Btrfs
Message-ID:  <igev84$8si$1@dough.gmane.org>
In-Reply-To: <52B3EE9B-9B4A-4F96-ADE3-83F56135183D@moneybookers.com>
References:  <4D26FBD3.20307@quip.cz>	<448737.83863.qm@web110508.mail.gq1.yahoo.com> <52B3EE9B-9B4A-4F96-ADE3-83F56135183D@moneybookers.com>

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On 07/01/2011 16:23, Stefan Lambrev wrote:
> Hi,
>
> Having in mind that a SAS enterprise disk normally can handle 150-180IOPS, this benchmark is testing something else ;)

It depends - since ZFS is logging all the time it doesn't have to seek 
as much; if all transactions are WRITE and given sequentially, they will 
be written to the drive sequentially, even with full fsync semantics. 
But 75k IOPS is a bit too much :)





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