On Saturday 01 November 2003 21:17, Dennis Freise wrote:
> On Thu, 30 Oct 2003 19:13:22 +0100
> "Hemmann, Volker Armin" <[EMAIL PROTECTED]> wrote:
>
> Hi Volker,
>
> > hdparm -d1 -c1 -u1 should be save.
>
> Are you sure that -u1 is safe? I've read the hdparm man page,
> but I (obviously) didn't understand it in full - is -u1 safe for
> _all_ chipsets now (got some sort of CMD640 chipset...) ?
> If it is, what can I expect from it concerning speedup ?
as man hdparm says:
-u Get/set interrupt-unmask flag for the drive. A setting of 1
permits the driver to unmask other interrupts during processing
of a disk interrupt, which greatly improves Linux's responsive-
ness and eliminates "serial port overrun" errors.
the chipsets mentioned there are from the stone age of ide-controllers. If you
have one of them, you do not need to worry about dma etc ;o) And man hdparm
further says, that the kernels 2.0.13 and later incorporate an apropriate bug
fix. If you do not believe man, don't use it.
I am using this options since ages without probs but with other chipsets. (SiS
735, 746, hpt366 , via kt133 (I do not know the southbridge anymore, AFAIR
an udma 66 type.))
Gl�ck Auf
Volker
--
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