Re: [Xen-users] slow network with gplpv drivers in vlan setup

[Matthieu Patou <mat+Informatique.xen@xxxxxxxxx>]

On 09/02/2010 11:19, Fajar A. Nugraha wrote:
> On Tue, Feb 9, 2010 at 3:10 PM, Matthieu Patou
> <mat+Informatique.xen@xxxxxxxxx>  wrote:
>    
> > > I faced quite a long time ago a problem on some of my servers:
> > >        
>    
> > > This might not be directly related, but I used 0.11.0.188 yesterday
> > > for an XP domU, RHEL's xen (3.1.2). While copying files, the
> > > performance was dreadfully slow. MUCH slower than QEMU. A bit
> > > puzzling, since on another system I have a similar setup, but with
> > > Gitco's Xen 3.4.1.
> > >
> > > Uninstalled that GPLPV version, and install 0.10.0.142. What do you
> > > know, they worked great :D Haven't got time to find out what exactly
> > > is wrong though. So if you still have problems, you might want to try
> > > that too.
> > >
> > >        
> > The thing is that I remember having this problem since 0.9.xx so it's a
> > constant problem.
> >      
> You didn't mention what hardware/Xen version you use.
> As James mentioned, the problem might be related to network cards.
> Turning off Large Send might solve your problem (at the cost of extra
> settings effort, and possible higher CPU usage).
>    
Right, I am on a debian lenny which is shipped with xen 3.2.1 (a bit old 
... right).
Hardware is Intel Gigabit 80003ES2LAN.

But I also have this behavior on a test workstation with the same OS but 
the following nic:  BCM5784M Gigabit Ethernet
> However, from my experince with RHEL and tg3, sometimes driver and
> firmware version matters as well. So if you have time, I suggest:
> - check server manufacturer's website to see if they have a newer firmware
> - update your OS, or change to known-good OS. On some systems I use
> RHEL5 with Gitco's updated Xen RPM, which works great with vlans and
> even bonding.
>    
I didn't find any update for the moment.
I'm not very familiar with this gitco stuff, what is it exactly ?

Matthieu.

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