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Subject: Re: Areca ARC1160 PCI-X 133MHz (83.333MHz, offset 32, 16bit)
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Jonas Maanmies wrote:
> Hello list.
>
> I have a Areca ARC1160 PCI-X 133MHz card in a PCI-X 133MHz slot on my
> mainboard, running FreeBSD 6.2-RELEASE i386
>
> The oddity is how the system detects the card.
>
> pass2 at arcmsr0 bus 0 target 16 lun 0
> pass2: <Areca RAID controller R001> Fixed Processor SCSI-0 device
> da0 at arcmsr0 bus 0 target 0 lun 0
> da0: <Areca System R001> Fixed Direct Access SCSI-3 device
> da0: 166.666MB/s transfers (83.333MHz, offset 32, 16bit), Tagged
> Queueing Enabled
> da0: 152587MB (312499712 512 byte sectors: 255H 63S/T 19452C)
>
>
> I can clearly remember getting >166MB/s to the same disks in the same
> machine, on the same controller previously. I think it was 6.1 I ran
> before updateing to 6.2-RELEASE

It says about the same for my Areca ARC-1220 (PCI-express); it just
simulates a SCSI controller; the bus bandwidth is not limited to 166MB/s
since i got 880MB/s buffered burst speed and 400MB/s sequential write
performance. Do you actually sense/measured a performance drop of any
kind? 6.2-RELEASE does have another version of the Areca driver.

- Veronica