Re: [Xen-users] PVM + Network Interface

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

It would be best to check the raw bandwidth with iperf or something
similar, rsync could easily be bound by other factors, CPU, memory, disk
etc.

On Wed, 2014-10-29 at 14:20 -0200, Diogo Borsoi wrote:
> Ian,
> 
> 
> The output of command is:
> 
> driver: vif
> version: 
> firmware-version: 
> bus-info: vif-0
> supports-statistics: no
> supports-test: no
> supports-eeprom-access: no
> supports-register-dump: no
> supports-priv-flags: no
> 
> 
> But, the transfer not more than this (rsync output):
> 
> sent 4.46M bytes received 101.66G bytes 12.11M bytes/sec
> 
> 
> 
> Thanks,
> Diogo
> 
> 
> On Wed, Oct 29, 2014 at 12:38 PM, Ian Campbell
> <Ian.Campbell@xxxxxxxxxx> wrote:
>         I think "ethtool -i eth0" will tell you which driver is being
>         used. If
>         it is "xenvif" or anything like that then it is PV, if it is
>         e1000 or
>         rtl81?? etc then it is emulated.
>         
>         You might also want to check the wiki e.g.
>         http://wiki.xen.org/wiki/Xen_Linux_PV_on_HVM_drivers
>         http://wiki.xen.org/wiki/PV_on_HVM
>         http://wiki.xen.org/wiki/Using_Xen_PV_Drivers_on_HVM_Guest
>         
>         
>         
>          On Wed, 2014-10-29 at 08:48 -0200, Diogo Borsoi wrote:
>         > Ian,
>         >
>         >
>         > Please, how to check this?
>         >
>         >
>         > Diogo
>         >
>         >
>         > On Wed, Oct 29, 2014 at 7:05 AM, Ian Campbell
>         > <Ian.Campbell@xxxxxxxxxx> wrote:
>         >         Are you sure you are using a PV network interface,
>         rather than
>         >         an
>         >         emulated one?
>         >
>         >         Ian.
>         >
>         >         On Wed, 2014-10-29 at 00:18 -0200, Diogo Borsoi
>         wrote:
>         >         > Thanks Ian,
>         >         >
>         >         > I can't transfer more than ~75Mb/s.
>         >         >
>         >         > Em 27/10/2014 12:19, "Ian Campbell"
>         >         <Ian.Campbell@xxxxxxxxxx>
>         >         > escreveu:
>         >         >         On Mon, 2014-10-27 at 11:15 -0200, Diogo
>         Borsoi
>         >         wrote:
>         >         >
>         >         >         > Could help me with this question?
>         >         >
>         >         >         I'm not sure what the question actually
>         was, but
>         >         I'll just
>         >         >         point out
>         >         >         that the notional speed reported by the PV
>         Ethernet
>         >         device
>         >         >         within the
>         >         >         guest has nothing to do with bandwidth
>         which is
>         >         actually
>         >         >         available,
>         >         >         we're just obliged to put something in
>         that field...
>         >         >
>         >         >         Ian.
>         >         >
>         >         >
>         >         >
>         >
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>         >
>         >
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>         
>         
>         
> 
> 
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