From: Mark Lord <liml@rtr.ca>
To: Tejun Heo <tj@kernel.org>
Cc: dhdurgee@verizon.net, linux-ide@vger.kernel.org
Subject: Re: SATA II NCQ and multi-port add-on card (PCI or PCIe x1)
Date: Thu, 30 Jul 2009 08:47:56 -0400 [thread overview]
Message-ID: <4A71967C.1010808@rtr.ca> (raw)
In-Reply-To: <4A712A22.6030708@kernel.org>
Tejun Heo wrote:
>
> I know sil3132 generally works well although it's quirky at times and
> has bandwidth limitation. Mark, how well do marvell chips preform?
> Do they have performance limitations like 3132s?
..
They don't seem to have any significant bottlenecks,
so performance is limited only by the bus-width for
the card/slot into which it gets inserted.
Up to a point, somewhere in the mid-100's of MBytes/second.
And the PCIe 7042 / PCI(x) 6042 chips handle FIS-based switching,
plus all of the other SATA bells and whistles, including ATAPI.
I think the only significant thing that's missing now
is power-management, which probably isn't that hard to
add now that there are other in-kernel SATA drivers
that include some PM functionality.
Cheers
prev parent reply other threads:[~2009-07-30 12:47 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4A68CF40.1050708@kernel.org>
2009-07-24 12:02 ` SATA II NCQ and multi-port support for ICH7 dhdurgee
2009-07-30 0:27 ` SATA II NCQ and multi-port add-on card (PCI or PCIe x1) dhdurgee
2009-07-30 5:05 ` Tejun Heo
2009-07-30 12:47 ` Mark Lord [this message]
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