[ltp] tuning with hdparm

[Rémi Lambert]

Hello !

I've an X31 and the hard disk sometimes produce an energic sound, like 
pronouncing "Tac". Is this the same sound you got when your disk was 
"rattling" (I don't know what it means, "rattling"...).

The output of the 
 hdparm /dev/hda1
is 
 multicount = 16 (on)
 IO_support =  0 (default 16-bit)
 unmaskirq =  0 (off)
 using_dma = 1 (on)
 keepsettings = 0 (off)
 ...
 geometry = 65535/16/63, sectors = 20487537, start = 63

and the output of 
 hdparm -tT /dev/hda1
is
 Timing buffer-cache reads : 704.70 MB/sec
 Timing buffered disk reads : 28.32 MB/sec


Why does the IO_support disabled ? Should I enable it (with the -c1 our -c3 
flag ?) ?    Is it dangerous ?


Should I try 
 hdparm -qc1qu1qd1 -B254   
?? Is it dangerous ? :-)


So, the main question in this mail is :
"is it dangerous for my hard disk to try those two hdparm commands ?"
:-)



Thank you very much !

RL

Le Jeudi 2 Septembre 2004 15:26, Szakacsits Szabolcs a écrit :
> On Thu, 2 Sep 2004, Alexander Gran wrote:
> > At least hdparm -qc1qu1qd1 should be ok. -m? -B ? should be tested,
> > but could help.
>
> I must use -B254 otherwise the disk (T40, 40G) makes very irritating
> rattling (this is already the second one, the original one crashed and
> made exactly the same noise). One of the side-effects was 1-2 MB/sec
> speed increase.
>
>  Szaka