SAS Raid - mfi driver

[Fredrik Widlund]

Ivan Voras wrote:
> Several:
>
> - are there cache differences between the controllers (amount of
> memory, cache policy)?
Default settings on both.
> - how does writing directly to the device (bypassing file system)
> compare?
Drives are four seagate 7200.10 400GB in a Raid-5 configuration.

[/mnt/test (/dev/mfid0p1 mounted)]
read: 200MB/s
write: 15MB/s

[/dev/mfid0p1]
read: 200MB/s
write: 8MB/s

[/dev/mfid0]
read: 200MB/s
write: 10MB/s

Kind regards,
Fredrik Widlund