From: Tejun Heo <tj@kernel.org>
To: Andy Vaselaar <andrew.vaselaar@trinity.edu>
Cc: IDE/ATA development list <linux-ide@vger.kernel.org>
Subject: Re: Frequent head unloads info
Date: Wed, 01 Oct 2008 10:42:15 +0900 [thread overview]
Message-ID: <48E2D577.90801@kernel.org> (raw)
In-Reply-To: <op.uh9nv6gs70fqr1@blacktop>
(restoring linux-ide and copying whole body for reference)
Andy Vaselaar wrote:
> Looks like it goes about 2-3 times a minute:
>
> [root@blacktop andy]# smartctl -a /dev/sda | grep 193
> 193 Load_Cycle_Count 0x0032 012 012 000 Old_age
> Always - 177144
> [root@blacktop andy]# sleep 60 ; smartctl -a /dev/sda | grep 193
>
> 193 Load_Cycle_Count 0x0032 012 012 000 Old_age
> Always - 177147
>
>
> I just did that, and as of right now, its at 177152. So, 120-180 times
> an hour.
>
> -Andy
>
>
>
> On Mon, 29 Sep 2008 02:30:09 -0500, Tejun Heo <tj@kernel.org> wrote:
>
>> Andy Vaselaar wrote:
>>>
>>> hdparm -B255 /dev/sda
>>>
>>> seems to stop it from unloading the heads.
>>
>> How much does the load_cycle_count increase per hour without the
>> adjustment?
>>
>> Thanks.
>>
>
--
tejun
next prev parent reply other threads:[~2008-10-01 1:43 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-15 23:56 Frequent head unloads info Andy Vaselaar
2008-09-29 7:30 ` Tejun Heo
[not found] ` <op.uh9nv6gs70fqr1@blacktop>
2008-10-01 1:42 ` Tejun Heo [this message]
2008-10-01 2:21 ` Tejun Heo
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