From: Jeff Garzik <jeff@garzik.org>
To: Mark Lord <kernel@teksavvy.com>
Cc: Jeff Moyer <jmoyer@redhat.com>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
"Asai Thambi Samymuthu Pattrayasamy (asamymuthupa) [CONTRACTOR]"
<asamymuthupa@micron.com>,
linux-ide@vger.kernel.org
Subject: Re: New driver mtipx2xx submission
Date: Thu, 12 May 2011 10:39:31 -0400 [thread overview]
Message-ID: <4DCBF123.1050607@garzik.org> (raw)
In-Reply-To: <4DC01907.50009@teksavvy.com>
On 05/03/2011 11:02 AM, Mark Lord wrote:
> On 11-05-02 02:40 PM, Jeff Moyer wrote:
> ..
>> Given the highly parallel nature of these parts, I wouldn't be surprised
>> if the ahci queue depth of 31 is one of the main bottlenecks. Can you
>> think of a way to extend the ahci driver in this manner to accommodate
>> devices like this one?
> ..
>
> I imagine that another performance drain might be libata's lack of
> support for host controller queues --> a hardware queuing layer that
> exists between the host and the drive's own queuing mechanism.
What do you feel libata lacks, in this area?
AHCI has a host controller queue that it actively manages, and we ship
off requests to that queue ASAP.
Jeff
next prev parent reply other threads:[~2011-05-12 14:39 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-28 15:53 New driver mtipx2xx submission Asai Thambi Samymuthu Pattrayasamy (asamymuthupa) [CONTRACTOR]
2011-04-28 22:06 ` Alan Cox
2011-05-02 12:40 ` Asai Thambi Samymuthu Pattrayasamy (asamymuthupa) [CONTRACTOR]
2011-05-02 17:42 ` Alan Cox
2011-05-03 20:07 ` [PATCH 0/3] " Asai Thambi Samymuthu Pattrayasamy (asamymuthupa) [CONTRACTOR]
2011-05-11 17:40 ` Asai Thambi Samymuthu Pattrayasamy (asamymuthupa) [CONTRACTOR]
2011-05-11 19:20 ` Alan Cox
2011-05-21 2:26 ` Asai Thambi S P
2011-05-25 14:36 ` Jeff Moyer
[not found] ` <22A973199D2C2F46933448F6E7990A300239EA77@ntxboimbx31.micron.com>
2011-06-01 19:51 ` Jeff Moyer
2011-06-01 20:21 ` Alan Cox
2011-06-15 1:29 ` Asai Thambi S P
2011-06-15 14:43 ` Jeff Moyer
2011-06-27 23:38 ` Asai Thambi Samymuthu Pattrayasamy (asamymuthupa) [CONTRACTOR]
2011-06-28 15:18 ` Jeff Moyer
2011-06-28 15:31 ` Alan Cox
2011-06-28 15:38 ` Jeff Moyer
2011-07-06 21:43 ` Asai Thambi S P
2011-07-07 7:37 ` Alan Cox
2011-07-26 10:46 ` Alan Cox
2011-07-26 10:46 ` Alan Cox
2011-07-26 11:44 ` Christoph Hellwig
2011-07-26 11:49 ` Alan Cox
2011-07-26 18:50 ` Jeff Garzik
2011-07-29 18:13 ` Asai Thambi S P
2011-07-29 18:13 ` Asai Thambi S P
2011-08-11 18:36 ` Asai Thambi S P
2011-08-11 18:36 ` Asai Thambi S P
2011-07-06 21:39 ` Asai Thambi S P
2011-06-02 1:21 ` David Dillow
2011-06-15 1:33 ` Asai Thambi S P
2011-06-15 3:12 ` David Dillow
2011-05-02 18:40 ` Jeff Moyer
2011-05-02 18:52 ` Alan Cox
2011-05-03 15:04 ` Mark Lord
2011-05-03 15:07 ` Alan Cox
2011-05-03 15:08 ` Mark Lord
2011-05-03 15:02 ` Mark Lord
2011-05-12 14:39 ` Jeff Garzik [this message]
-- strict thread matches above, loose matches on Subject: below --
2011-05-03 11:09 Jordan_Hargrave
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