On Mon, Aug 31, 2009 at 11:51 PM, Tom Robinson<tom.robinson AT motec.com DOT 
au> wrote:
> While the disk is reaching saturation (and recovering quickly) I'm
> thinking that the all the retransmissions would be slowing things down more.
>
> I don't see any errors on the client interface but there are four on the
> server interface over the last four days.

Hmm, the causation may be going the other way -- if the disk is
generating too many IRQs for the CPU to handle, then network packets
might get dropped.  Alternately, perhaps the PCI bus is maxed out?
Anyway, this sounds like a problem local to the client.  Is there a
way to slow down the disk IO so that it doesn't wedge the machine?

Dustin

-- 
Open Source Storage Engineer
http://www.zmanda.com