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From: Tejun Heo <tj@kernel.org>
To: Mark Lord <kernel@teksavvy.com>
Cc: Al Bogner <suse-linux@ml082.pinguin.uni.cc>, linux-ide@vger.kernel.org
Subject: Re: WDC WD15EARS-00Z5B1: harddrive which does crazy unloading
Date: Thu, 11 Mar 2010 14:38:16 +0900	[thread overview]
Message-ID: <4B9881C8.10506@kernel.org> (raw)
In-Reply-To: <4B965DE7.7000109@teksavvy.com>

Hello,

On 03/09/2010 11:40 PM, Mark Lord wrote:
> The default on these drives is to unload heads
> after a mere eight (8) seconds of inactivity.
> 
> Ugh.

Heh, yeah, that's pretty low.  I hope they eventually learn to adjust
that dynamically considering running avg of intervals between writes.
It shouldn't be too hard.

> The wdidle3-1.03 DOS tool can fix that.  Google it.
> 
> I have disassembled that tool here, and found a few
> vendor-unique commands inside it.  But thus far have
> not managed to get them working natively in Linux.
> 
> I really need a SATA tracer/analyser..

Hmmm... so they don't respond to ATA APM command?

Thanks.

-- 
tejun

  reply	other threads:[~2010-03-11  5:38 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-02-08 18:33 WDC WD15EARS-00Z5B1: harddrive which does crazy unloading Al Bogner
2010-03-09  8:05 ` Tejun Heo
2010-03-09  8:13   ` Mikael Abrahamsson
2010-03-09 10:34   ` Al Bogner
2010-03-09 14:40   ` Mark Lord
2010-03-11  5:38     ` Tejun Heo [this message]
2010-03-11  5:53       ` Tejun Heo
2010-03-11 19:10       ` Justin Maggard
2010-03-14 15:57       ` Mark Lord
2010-03-15  0:02         ` Tejun Heo
2010-03-18 16:15           ` Al Bogner
2010-03-18 18:36             ` Justin Maggard
2010-03-19  2:26             ` Tejun Heo
2010-03-19  2:27               ` Tejun Heo
2010-03-23  1:34               ` Mark Lord
     [not found]                 ` <4BA82A2F.7010607@hardwarefreak.com>
2010-03-23  2:44                   ` Stan Hoeppner
2010-04-29 11:00         ` Bjørn Mork

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