Re: hdparm tuning

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Anthony Krishock wrote:
Thanks, Luke..

I take your statement to mean that I could step through one of the numerous
examples of hdparm tuning on the web (Such as
c74.html) without causing any damage?

Also.. for my setup, sda is the Windows XP side (NTFS). Should I only mess
with the linux side (sdb)?



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Today's Topics:

   1. Re: dmraid performance tuning? (Luke Yelavich)


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Date: Mon, 14 Apr 2008 08:26:47 +1000
From: Luke Yelavich <luke.yelavich@xxxxxxxxxxxxx>
Subject: Re: dmraid performance tuning?
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On Mon, Apr 14, 2008 at 01:30:03AM EST, Anthony Krishock wrote:
That said.. I have one question. Is it possible to tune a dmraid disk in
same way that you would using hdparm? If so.. What are the steps involved?

Yes, you would use the device node of the disk or disks that are part of the
array. So hdparm -d 1 /dev/sda would enable dma for sda, the first drive in
the array. I don't think trying to do this with the device mapper nodes
would work.
AFAIK only a small subset of the hdparm parameters work for sd devices. I think you'd be better off with sdparm.


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