experience with hdparm

[Dominic Bonfiglio]

Robert Brockway wrote:
> On Sat, 15 Apr 2006, Dominic Bonfiglio wrote:
>
>> hi,
>>
>> has anyone tried to speed up their linux system using hdparm? any luck?
>> any risks?
>
> I did a talk on this at TLUG a couple of years back.  There are some
> risks associated with non-standard IDE interfaces and chipsets.  I've
> never had data loss despite using hdparm on a regular basis.  Having
> said this, I always backup before playing with hdparm.
>
> I did crash a box once when I enabled DMA - it was writing to disk at
> the time.  This was an experiment :)
>
> Here are the settings I have on one box at the moment.  This is pretty
> typical:
>
> /sbin/hdparm -a8 -c1 -d1 -k1 -m16 -u1 -W1 /dev/hda
>
> Experimentation is often required for ideal settings.
>
> You can do speed testing on the disks with hdparm and also with bonnie++
>
> Always always always back up before tweaking parameters using hdparm
> or speed testing once you have tweaked the parameters.
>
> Rob
>
dear rob and ted,

thanks for the advice!

dominic
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