On Wed, 2006-04-12 at 12:00 +0800, Tian, Kevin wrote:
> BTW, when you observed domU network degradation, how about
> the network of dom0? If dom0 is not affected, it's obvious that the
> whole event path is placed lower priority than whole interrupt path,
> and thus affects virtual drivers. If that's the case, I'll check whether
> some logic can be added to match original flow.
It appears dom0 is not affected and has good throughput. Here's an
interesting observation though; if I wget from dom0 and domU at the same
time, dom0 is a little slower (~82MB/s), but the domU throughput
actually increases while the wget in dom0 is running. According to
nload, domU's throughput nearly doubles for the brief time dom0's wget
is running. Even wget'ing a different file off the server with dom0
causes domUs wget to speed up. Perhaps an indication that your priority
hunch is correct? Thanks,
Alex
--
Alex Williamson HP Linux & Open Source Lab
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