Re: [Xen-users] Slow network speed with Xen 3.2-1

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Sun, Sep 13, 2009 at 12:19:57PM +0300, Pasi Kärkkäinen wrote:
> On Fri, Sep 11, 2009 at 02:46:53PM -0400, Brent Verner wrote:
> > I had a similar problem and the solution was to disable checksum
> > offloading in the domU.
> > 
> > sh# ethtool -K eth0 tx off
> > 
> > You can add this to your /etc/network/interfaces, too..
> > 
> >   post-up  ethtool -K eth0 tx off
> > 
> > 
> > I also had to disable this in my dom0 for dhcp to work...
> > 
> 
> What physical NIC do you have? Sounds like a bug in the driver to me..
> 
> What driver/version? "ethtool -i peth0" should tell that.
>

Also please paste offloading settings from dom0:
"ethtool -k peth0"

Thanks!

-- Pasi

> 
> > cheers!
> >   b
> > 
> > On Thu, Sep 10, 2009 at 2:19 PM, virtualroot <virtualroot@xxxxxxxxx> wrote:
> > > I'm getting a slow network speed (download/upload) domU and dom0
> > > limits in 10kbps/20kbps.
> > > Booting a kernel without Xen, this doesnt happens
> > >
> > > /etc/xen/xend-config.sxp
> > > (network-script network-bridge)
> > > (vif-script vif-bridge)
> > > (dom0-min-mem 196)
> > > (dom0-cpus 0)
> > >
> > > cat /etc/xen/XXX.cfg
> > > kernel      = '/boot/vmlinuz-2.6.26-1-xen-amd64'
> > > ramdisk     = '/boot/initrd.img-2.6.26-1-xen-amd64'
> > >
> > > memory      = '2048'
> > > vcpus = '4'
> > >
> > > root        = '/dev/sda2 ro'
> > > disk        = [
> > >                  'phy:/dev/storage/XXX-disk,sda2,w',
> > >                  'phy:/dev/storage/XXX-swap,sda1,w',
> > >              ]
> > >
> > > name        = 'XXX'
> > > vif         = [ 'ip=190.228.X.X,mac=00:16:3E:37:17:9A' ]
> > >
> > > root = "/dev/sda2 ro noapic acpi=off nopcmcia noagp nobluetooth"
> > > extra = "3 xencons=tty"
> > >
> > > on_poweroff = 'destroy'
> > > on_reboot   = 'restart'
> > > on_crash    = 'restart'
> > >
> > > I use Debian 5.0.2 kernel 2.6.26-1-xen-amd64
> > >
> > > _______________________________________________
> > > Xen-users mailing list
> > > Xen-users@xxxxxxxxxxxxxxxxxxx
> > > http://lists.xensource.com/xen-users
> > >
> > 
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> 
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