Hello everyone; i have this question with Xen. My physical server has two gigabit lan nic cards, and i have three Win 2003 running on it, but Xen seems to show them a Realtek RTL8139. Thats a 10/100 nic card; will the virtual machines still be able to transmit at 1000mbps? or i have to change something in Xen, in order to show another type of virtual nic? thanks Juan Pablo _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Juan Pablo Torres wrote:> Hello everyone; i have this question with Xen. > My physical server has two gigabit lan nic cards, and i have three Win 2003 > running on it, but Xen seems to show them a Realtek RTL8139. > Thats a 10/100 nic card; will the virtual machines still be able to > transmit at 1000mbps?it emulates the register set of a Realtek card, but not its performance. the bandwith you get is limited by software, not hardware. -- Javier _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
>it emulates the register set of a Realtek card, but not its performance >the bandwith you get is limited by software, not hardware.I agree with that, but what should i do to eliminate that limitation and get full speed? On Mon, Jan 5, 2009 at 10:24 AM, Javier Guerra Giraldez <javier@guerrag.com>wrote:> Juan Pablo Torres wrote: > > Hello everyone; i have this question with Xen. > > My physical server has two gigabit lan nic cards, and i have three Win > 2003 > > running on it, but Xen seems to show them a Realtek RTL8139. > > Thats a 10/100 nic card; will the virtual machines still be able to > > transmit at 1000mbps? > > it emulates the register set of a Realtek card, but not its performance. > the > bandwith you get is limited by software, not hardware. > > > -- > Javier >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
> > >it emulates the register set of a Realtek card, but not itsperformance> >the bandwith you get is limited by software, not hardware. > I agree with that, but what should i do to eliminate that limitationand> get full speed? >You could try the GPLPV drivers, or the other PV offerings that are around. During fairly controlled testing with GPLPV I have obtained speeds of 2Gbps (DomU->Dom0), and 800Mbps (Dom0->DomU). James _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users