linux-kernel - Re: sata_nv times out for BD-ROM iHOS104-08

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Message-ID: <4B8CFAF4.7030303@kernel.org>
Date:	Tue, 02 Mar 2010 20:48:04 +0900
From:	Tejun Heo <tj@...nel.org>
To:	Cengiz Günay <cgunay@...ry.edu>
CC:	Robert Hancock <hancockrwd@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-ide@...r.kernel.org" <linux-ide@...r.kernel.org>
Subject: Re: sata_nv times out for BD-ROM iHOS104-08

Hello,

On 03/01/2010 02:24 AM, Cengiz Günay wrote:
> Before and after the swncq-atapi-pio patch I still get awful read
> times from the BD-ROM drive:
> 
> $ time dd if=/dev/sr0 of=/dev/null bs=64k count=1024
> 67108864 bytes (67 MB) copied, 106.945 seconds, 628 kB/s
> => real	1m46.977s

Hmmm... the drive is timing out even on 4k READ10's.  This shouldn't
really be happening.  Can you please try this one?

-- 
tejun

View attachment "swncq-atapi-pio-2.patch" of type "text/x-patch" (1743 bytes)