Re: Odd IDE performance drop 2.4 vs 2.6?

[Nick Piggin]

Alan Cox wrote:
> On Llu, 2005-06-13 at 11:43, Ondrej Zary wrote:
>
> > I see this problem too with i430TX chipset (the south bridge and thus 
> > IDE controller is the same as in i440LX/EX and BX/ZX).
>
>
> Make sure you have pre-empt disabled and the antcipatory I/O scheduler
> disabled. 

I don't think that those could explain it.

Increasing readahead with the `blockdev` command has been known
to fix similar reports.

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