[Gllug] AMD 64 X 2 / CentOS 4.3 x86-64 SMP RAID 5 slow

[Garry Heaton]

Karanbir Singh wrote:

> yes, you definitely want the SMP kernel - also disable your powernow in 
> the system BIOS. thats one thing that might be getting in the way ( or 
> scale the system to run at full speed when you do the benchmarks, but 
> considering you are most likely going to use this as a server, disable 
> powernow completely )
> 
> unless you actually get the base ram id issue - you dont need the iommu 
> switch either.
> 

AMD Cool 'n Quiet/PowerNow is already Disabled

ACPI is enabled. Should I disable it since there seems to be an ACPI issue?

The 2.6.9-42 kernel seems to have solved the need for 'iommu=soft' without
which I couldn't get the old kernel to boot. However, the  first run of all
GUI apps is still a big problem. After first run they're fine.

Garry
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