linux-kernel - Re: Combined mode quirk removal kills performance

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Message-ID: <465EEDD3.4070100@seclark.us>
Date:	Thu, 31 May 2007 11:46:27 -0400
From:	Stephen Clark <Stephen.Clark@...lark.us>
To:	Frank Sorenson <frank@...rocks.com>
CC:	LKML <linux-kernel@...r.kernel.org>, jeff@...zik.org
Subject: Re: Combined mode quirk removal kills performance

Frank Sorenson wrote:

>-----BEGIN PGP SIGNED MESSAGE-----
>Hash: SHA1
>
>The patch to "remove combined mode quirk" (git bisect says
>8cdfb29c0cd8018f92214c11c631d8926f4cb032) makes my laptop run slower
>than a dead sloth.  "hdparm -T" indicates that buffered disk reads on my
>hard drive drop from 48-50 MB/sec to 1-2MB/sec, and the system is nearly
>unusable.
>
>System is a Dell Inspiron E1705 (Core 2 Duo 2.16GHz) running x86_64 FC6.
>
>Frank
>- --
>Frank Sorenson - KD7TZK
>Linux Systems Engineer, DSS Engineering, UBS AG
>frank@...rocks.com
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>-
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>  
>
Hi Frank,

I had the same problem. I am running FC6 and had to build a custom 
kernel that did not configure
in the old ide driver - then my speed of my harddrive went back to normal.

HTH,
Steve

-- 

"They that give up essential liberty to obtain temporary safety, 
deserve neither liberty nor safety."  (Ben Franklin)

"The course of history shows that as a government grows, liberty 
decreases."  (Thomas Jefferson)



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