Re: [gentoo-user] Hard Disk going a lot slower now...

[Chris Walters <cjw2004d@comcast.net>]

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Richard Fish wrote:
> On 11/26/06, Chris Walters <cjw2004d@comcast.net> wrote:
>> I suspect that what I did in Linux turned off DMA for this drive, though
>> it could be something else.  Any ideas or suggestions would be welcome.
> 
> DMA is always enabled for SATA drives.  There is nothing special
> needed to enable it, although you do need to make sure that you have
> the right driver compiled in your kernel for the IO chipset.  What
> does "hdparm -t /dev/sda" report?  If this seems low, post the outputs
> of lspci and dmesg.
> 
> -Richard

Hi Richard,

Well, in Gentoo, the results of "hdparm -t /dev/sda" were around 65 MB /
second.  dmesg shows the drive in UDMA/133 mode, and I didn't bother
with lspci.  In Windows, however, the benchmarks are quite different -
around 4300-4600 KB / second.  At least I know the problem is not with
the drive.

That must be where the problem lies, since the 65 MB / s is about what
Windows was reporting before I repartitioned it and installed Gentoo -
the change wasn't immediate, but it was soon after.  This is one of the
things I hate about Windows...

Regards,
Chris
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