Pokles vykonu HDD

[tecl na quick.cz]

On Fri, 26 Oct 2001, Jan Houstek wrote:

> Na SuSE 7.1 s jadrem 2.4.0 (plus nejake SuSE patche) jsem s reiserfs
> dosahoval pri kopirovani souboru mezi partitionami rychlosti kolem 5MB/s,
> ted na 2.4.13 vanilla a unstable Debianem je to 2 - 2.5 MB/s. Netusite,
> kde je zakopany pes?
>
-- cut --
> a v dmesg je
>
> ide: Assuming 33MHz system bus speed for PIO modes; override with
> idebus=xx
> VP_IDE: IDE controller on PCI bus 00 dev 39
> VP_IDE: chipset revision 6
> VP_IDE: not 100% native mode: will probe irqs later
> ide: Assuming 33MHz system bus speed for PIO modes; override with
> idebus=xx

jakou mate FSB 66|75|83|100.. ja mam 75MHz a tak musim dat kernelu
option "idebus=37" jinak to vyhazuje chyby v DMA casovani, bez toho
mi nefungovalo UDMA33 vice info v /usr/src/linux/Documentation/ide.txt
a kernel-parameters.txt.

> VP_IDE: VIA vt82c596a (rev 09) IDE UDMA33 controller on pci00:07.1
>     ide0: BM-DMA at 0xe000-0xe007, BIOS settings: hda:DMA, hdb:pio
>     ide1: BM-DMA at 0xe008-0xe00f, BIOS settings: hdc:DMA, hdd:pio
-- cut --

jinak si pohrajte s hdparm (na vlastni nebezpeci ;-).
[manualy jsou tu od toho aby se cetly]
-- 
      t.v.