I am working on a KVM network performance issue found in our lab running
the DayTrader benchmark. The benchmark throughput takes a significant hit
when running the application server in a KVM guest verses on bare metal.
We have dug into the problem and found that DayTrader's use of small
packets
mashi...@linux.vnet.ibm.com wrote on 01/27/2011 02:15:05 PM:
On Thu, 2011-01-27 at 22:05 +0200, Michael S. Tsirkin wrote:
One simple theory is that guest net stack became faster
and so the host can't keep up.
Yes, that's what I think here. Some qdisc code has been changed
recently.
I ran
ste...@us.ibm.com wrote on 01/28/2011 12:29:37 PM:
On Thu, 2011-01-27 at 22:05 +0200, Michael S. Tsirkin wrote:
One simple theory is that guest net stack became faster
and so the host can't keep up.
Yes, that's what I think here. Some qdisc code has been changed
recently.
I ran a
Michael S. Tsirkin m...@redhat.com wrote on 01/28/2011 06:16:16 AM:
OK, so thinking about it more, maybe the issue is this:
tx becomes full. We process one request and interrupt the guest,
then it adds one request and the queue is full again.
Maybe the following will help it stabilize?
By
Michael S. Tsirkin m...@redhat.com wrote on 02/02/2011 12:38:47 PM:
On Tue, Jan 25, 2011 at 03:09:34PM -0600, Steve Dobbelstein wrote:
I am working on a KVM network performance issue found in our lab
running
the DayTrader benchmark. The benchmark throughput takes a significant
hit
when
Valeri Kuchansky valeri.kuchan...@genband.com wrote on 07/27/2011
10:47:14 AM:
Folks,
I'm looking for some help on guest network configuration when enabling
VT-d.
I have fully completed steps given on http://www.linux-kvm.org/page/
How_to_assign_devices_with_VT-d_in_KVM on detaching and
Chris Friesen chris.frie...@genband.com wrote on 06/27/2011 09:15:05 AM:
On Fri, 2011-06-24 at 15:10 -0600, Chris Friesen wrote:
Is anyone working on SR-IOV for KVM, specifically for networking? Or
is
virtio good enough that it's not a pressing concern?
In IBM's recent postings of results