Re: [Xen-users] Network performance with HVM DomU

[Christoph <mangel@xxxxxx>]

> Since I've been dealing with netfront issues recently also (not on 
> Linux or
> Windows), I would recommend that you take a capture of the packets seen 
> in
> the bridge using tcpdump and analize it with Wireshark or something
> similar. FWIW, I use the following rune in order to make tcpdump 
> generate a
> file that I can open with Wireshark (this is all on Dom0):
>
> # brctl show
> (then you will have to identify a vif that belongs to one of the DomUs
> involved in the transaction, they have the format vif<domid>.<order>).
> # tcpdump -n -i <if> -s0 -w <output>.pcap
>
> Then you can open the resulting <output>.pcap and check for 
> retransmissions,
> or anything strange.
>
> Roger.
I have seen on the dom0 host there are 2 net ifaces for the hvm windows 
domU (marax):
40: vif10.0-emu: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc 
pfifo_fast master xenbr5 state UNKNOWN qlen 500
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
    inet6 fe80::fcff:ffff:feff:ffff/64 scope link
       valid_lft forever preferred_lft forever
41: vif10.0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master 
xenbr5 state UP qlen 32
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff

xl network-list marax
Idx BE Mac Addr.         handle state evt-ch   tx-/rx-ring-ref BE-path
0   0  00:16:3e:05:01:10     0     4     16 16269/16268       
/local/domain/0/backend/vif/10/0
it is normal? all my other domU's are linux domU's (pv) they have each 
only 1 net iface on dom0...
Greetz

--
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Greetz

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