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From: Jeff Garzik <jgarzik@pobox.com>
To: Jens Axboe <axboe@suse.de>
Cc: Daniel Drake <dsd@gentoo.org>, Otto Meier <gf435@gmx.net>,
	linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org
Subject: Re: Driver for sata adapter promise sata300 tx4
Date: Mon, 01 Aug 2005 16:36:47 -0400	[thread overview]
Message-ID: <42EE87DF.1080508@pobox.com> (raw)
In-Reply-To: <20050801203228.GS22569@suse.de>

Jens Axboe wrote:
> Oh, and forget TCQ. It's a completely worthless technology inherited
> from PATA,

Agreed.

There are a few controllers where we may -eventually- add TCQ support, 
controllers that do 100% of TCQ in hardware.  But that's so far down the 
priority list, it's below just about everything else.

There may just be little motivation to -ever- support TCQ, even when 
libata is the 'main' IDE driver, sometime in the future.

I give an outline of queueing stuff at

	http://linux.yyz.us/sata/software-status.html#tcq

Regards,

	Jeff



  reply	other threads:[~2005-08-01 20:42 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-08-01  9:19 Driver for sata adapter promise sata300 tx4 Otto Meier
2005-08-01 14:43 ` Daniel Drake
2005-08-01 15:12   ` Otto Meier
2005-08-01 15:28   ` Otto Meier
2005-08-01 16:16     ` Daniel Drake
2005-08-01 20:17       ` Jens Axboe
2005-08-01 20:30         ` Jeff Garzik
2005-08-01 20:35           ` Jens Axboe
2005-08-02  8:18             ` Otto Meier
2005-08-01 20:32         ` Jens Axboe
2005-08-01 20:36           ` Jeff Garzik [this message]
2005-08-01 20:42             ` Jens Axboe
2005-08-01 20:49               ` Jeff Garzik
2005-08-02  6:48                 ` Jens Axboe

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