Below par performance of SATA drives on FC4-Test2

[Alan Cox]

On Mon, May 09, 2005 at 01:12:42PM +0530, Vamsee Krishna Gomatam wrote:
> I've recently installed FC4 Test 2. The system is AMD64 (installed
> x86_64) on VIA 8237 Mobo. I have one Samsung SATA drive (120GB) on VIA
> VT6420 controller and 2 IDE drives of 80GB each. I've performed a
> hdparm check on these three drives and got the following results:

The sata layer doesn't support cache flush ioctls so the data may be dubious

> The performance of SATA drive is not upto the mark. I used to get
> better results on FC3. What could be the possible problem and any
> ideas on how to solve it?

How much difference is there ? Remembering that FC4test will have debugging
code paths enabled.