Re: Abysmal PATA IDE performance

[Stephen Clark <Stephen.Clark@seclark.us>]

Björn Steinbrink wrote:

> On 2006.11.08 19:35:45 -0500, Stephen Clark wrote:
>  
>
> > Mark Lord wrote:
> >
> >    
> >
> > > Remove the drivers/ide stuff from you system and let libata (ata_piix)
> > > manage the ICH7.  That should speed things up quite a bit.
> > >
> > > -ml
> > >
> > >
> > >
> > >      
> > Isn't already enabled?
> >
> > ata_piix 0000:00:1f.2: version 2.00
> > ata_piix 0000:00:1f.2: MAP [ P0 P2 IDE IDE ]
> > ACPI: PCI Interrupt 0000:00:1f.2[B] -> GSI 19 (level, low) -> IRQ 233
> > ata: 0x170 IDE port busy
> > PCI: Setting latency timer of device 0000:00:1f.2 to 64
> > ata1: SATA max UDMA/133 cmd 0x1F0 ctl 0x3F6 bmdma 0xFFA0 irq 14
> > scsi0 : ata_piix
> >
> >    
>
> Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
> ide: Assuming 33MHz system bus speed for PIO modes; override with
> idebus=xx
> ide0: I/O resource 0x1F0-0x1F7 not free.
> ide0: ports already in use, skipping probe
> Probing IDE interface ide1...
> hdc: HTS721060G9AT00, ATA DISK drive
>
> Appears first and that's where the other driver has taken control of the
> drives. I had the same issue on my thinkpad, getting rid of the whole
> IDE stuff solved the problem (because the other drivers does no longer
> grab the drive).
>
> This ThinkWiki entry should apply to your laptop just as well, just
> replace /dev/hda with /dev/hdc.
> http://www.thinkwiki.org/wiki/Problems_with_SATA_and_Linux#No_DMA_on_system_hard_disk
>
>  
>
> > also this laptop has nothing on ide0 - both the harddrive and dvdrom are 
> > on ide1.
> > is this confusing things?
> >    
>
> Probably ide0 is pure SATA, while ide1 has the PATA adapters (just a
> guess).
>
> Björn
>
>  
Thank Bjorn,

I tried this and the kernel couldn't find the root volumegroup - so i 
got a kernel panic.
I am not sure on how to tell the system the volumegroup is now on sd? 
This is a
fc6 installation.

Steve

--

"They that give up essential liberty to obtain temporary safety, 
deserve neither liberty nor safety."  (Ben Franklin)

"The course of history shows that as a government grows, liberty 
decreases."  (Thomas Jefferson)



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