Sata disk with 16 bit IO_support

[Joan Tur]

Es Dimecres, 27 de Setembre de 2006 01:37, en Felipe Alfaro Solana va 
escriure:
| On 9/26/06, Joan Tur <joantur at cancullet.org> wrote:
| > Es Dimarts, 26 de Setembre de 2006 21:31, en Felipe Alfaro Solana va 
escriure:
| > | On 9/26/06, Joan Tur <joantur at cancullet.org> wrote:
| > | > Hallo!
| > | >
| > | > My brand new laptop (LG LW20) has got a 1,8" sata disk drive; I've
| > | > installed Kubuntu 6.06.1 in it, and have noticed that IO_support was
| > | > 0 (16 bit), instead of 1 (32 bit).
| > | >
| > | > Running "hdparm -c1 /dev/sda" shows "HDIO_SET_32BIT failed: Invalid
| > | > argument"
| > |
| > | AFAIK, most of the tunables of hdparm are useless for SATA controllers
| > | (only for PATA controllers). Anyways, you can be pretty sure you're
| > | using 32-bit access, bus-master transfers to and from your hard disk,
| > | since almost all SATA controllers do support bus-master and are based
| > | on PCI or PCI-Express bus designs (not ISA).
| >
| > I think you're wright, as I get about 18MB/s transfer rates from hdparm.
|
| Is that a laptop SATA disk? 18MB/s seems a little bit slow for a SATA
| drive.
|
| I've a couple of desktop ATA100 disks that sustain transfers at about
| 40MB/s and I've seen SATA disks getting into 50MB/s or even more.
As mentioned above, it's a 1,8" sata drive (not even 2,5 nor 3,5")  ;)

So maybe 18MB/s are fine, aren't they?  8-?

Gracias!!  ;)
-- 
Joan Tur (aka Quini), Eivissa-Spain
    Jabber: quini2k at jabber.org
       Yahoo & AIM: quini2k
        www.ClubIbosim.org
  Linux: usuari registrat 190.783
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