> As for the network-related issues, indeed, this is something which
> is quite unexpected. I browsed all changes between 1.0 and 1.0.1,
> but I don't see a single change which may have this effect...
I am no dev but I would guess that several gbit/s of TCP-traffic may
trigger any regressions in other parts of the KVM subsystems too, so
perhaps it isn't directly linked to the networking?
> I'll dig further into this in a few next days, but since I can't
> reproduce this I may need more of your help... Can I rely on a
> bit more of your testing please?
Of course, just let me know what you want me to test.
> Besides, are you sure you're using bridge networking,
> not macvtap networking?
I used virt-manager in Wheezy to set up the machines and selected the
bridges that I created using the same virt-manager.
I did try macvtap as a step in the troubleshooting (on -9) but the
performance was slightly worse not better.
Just so you can be absolutely sure, here is my network configuration:
---
root@kvm1:~# cat /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto eth0
iface eth0 inet static
address 10.0.6.20
netmask 255.255.255.0
gateway 10.0.6.1
auto Server
iface Server inet manual
bridge_ports eth1
bridge_stp off
bridge_fd 0
auto DMZ
iface DMZ inet manual
bridge_ports eth2
bridge_stp off
bridge_fd 0
---
I am using the DMZ and Server bridges for the VMs.
---
root@kvm1:~# ifconfig
DMZ Link encap:Ethernet HWaddr 00:25:90:56:60:b8
inet6 addr: fe80::225:90ff:fe56:60b8/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5017 errors:0 dropped:0 overruns:0 frame:0
TX packets:86 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:230962 (225.5 KiB) TX bytes:7348 (7.1 KiB)
Server Link encap:Ethernet HWaddr 00:25:90:56:60:b7
inet6 addr: fe80::225:90ff:fe56:60b7/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5227 errors:0 dropped:0 overruns:0 frame:0
TX packets:86 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:246674 (240.8 KiB) TX bytes:7348 (7.1 KiB)
eth0 Link encap:Ethernet HWaddr 00:25:90:56:60:b6
inet addr:10.0.6.20 Bcast:10.0.6.255 Mask:255.255.255.0
inet6 addr: fe80::225:90ff:fe56:60b6/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:506 errors:0 dropped:0 overruns:0 frame:0
TX packets:466 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:45360 (44.2 KiB) TX bytes:43793 (42.7 KiB)
Interrupt:16 Memory:fbc00000-fbc20000
eth1 Link encap:Ethernet HWaddr 00:25:90:56:60:b7
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:10481 errors:0 dropped:0 overruns:0 frame:0
TX packets:4655 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1352037 (1.2 MiB) TX bytes:462975 (452.1 KiB)
Interrupt:17 Memory:fbb00000-fbb20000
eth2 Link encap:Ethernet HWaddr 00:25:90:56:60:b8
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5697 errors:0 dropped:1 overruns:0 frame:0
TX packets:872 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:378588 (369.7 KiB) TX bytes:69268 (67.6 KiB)
Interrupt:18 Memory:fba00000-fba20000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
vnet0 Link encap:Ethernet HWaddr fe:54:00:b0:18:68
inet6 addr: fe80::fc54:ff:feb0:1868/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:355 errors:0 dropped:0 overruns:0 frame:0
TX packets:5530 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:24545 (23.9 KiB) TX bytes:340209 (332.2 KiB)
vnet1 Link encap:Ethernet HWaddr fe:54:00:db:ee:70
inet6 addr: fe80::fc54:ff:fedb:ee70/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4568 errors:0 dropped:0 overruns:0 frame:0
TX packets:10040 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:428413 (418.3 KiB) TX bytes:1080901 (1.0 MiB)
vnet2 Link encap:Ethernet HWaddr fe:54:00:f7:25:33
inet6 addr: fe80::fc54:ff:fef7:2533/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:350 errors:0 dropped:0 overruns:0 frame:0
TX packets:5524 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:23681 (23.1 KiB) TX bytes:339435 (331.4 KiB)
---
When I boot up a guest linked to a bridge vnetX adapters are added as
I would expect.
---
root@kvm1:~# brctl show
bridge name bridge id STP enabled interfaces
DMZ 8000.0025905660b8 no eth2
vnet0
vnet2
Server 8000.0025905660b7 no eth1
vnet1
---
Regards,
Hans-Kristian
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