Andrea Franceschini writes:
> Hi !
> 
> I'm trying RaidFrame (raid-5) partition on my NetBSD-1.5R.
> I'm using latest snapshot to enable support fro UDMA/66 on my
> controller.
> 
> Now my system is up and running ,but whenever i make a data-transfer to 
> my raid disk
> the whole system slow down.
> 
> For example:
> 
> When i try to make a ftp-transfer to raid disk with my 100Mbps/Nic  i
> got ~200KB/s!!
> but when i try the same transfer to a non-raid partition on the same
> disk i got 7.6MB/s!!
> 
> I tried several NIC with no result,in the worst case (using a Realtek
> NIC) the
> network interface stops working at all!!!
> 
> Even in transfer disk-to-disk i got ridicolous performance!!
> 
> All this started after i upgraded my kernel in order to support UDMA/66
> devices.

What kernel revision were you running before?

> Using Previous kernel disk/raid performance was not so fast (~10MB/s)
> but neither so slow!!
> 
> Of course if i don't use raid devices all works fine and very
> fast(80MB/s on UDMA disks)!!.

What does 'raidctl -s raid0' say, and what does 'disklabel raid0' display?

Later...

Greg Oster