SAS Raid - mfi driver

[Ivan Voras]

Fredrik Widlund wrote:

> setups but hit the same limitation again and again. The strange part is
> that a Dell raid adapter based on the same chipset, the Perc 5/I, works
> well with writes achieving 200MB/s.
> 
> Any ideas would be greatly appreciated.

Several:

- are there cache differences between the controllers (amount of memory, 
cache policy)?
- how does writing directly to the device (bypassing file system) compare?