On Wed, Nov 14, 2012 at 11:33 AM, tschend <thomas.sch
...@gmail.com> wrote:
> Hi,
> just for the records, i fixed the problem.
> The intel x520-T2 10GBe dual port card was the problem.
> The ixgbe driver version of kernel 3.2.0 (3.6.7-k) caused the error.
> I installed 3.11.33 and turned off large receive offload (ethtool -K
> ethX lro off) and it works like a chrarm now.
> CHeers
> Thomas
> On 12 Nov., 15:55, tschend <thomas.sch...@gmail.com> wrote:
>> Hi,
>> i have a problem with the performance of guest network speed when
>> using bond + bridge.
>> we are testing debian squeeze + kernel 3.2 form backports + kvm 1.2 +
>> ganeti 2.6.1. Works great so far.
>> The setup of the bridges looks like usual
>> eth4/eth5 <--> bond0 <---> gnt-br0
>> Bond settings is active/passiv. Switch is not configured in any way.
>> The tap of the test vm has the same mac as the bridge
>> gnt-br0 Link encap:Ethernet HWaddr 26:4b:49:53:a7:c8
>> tap0 Link encap:Ethernet HWaddr 26:4b:49:53:a7:c8
>> the active nic is marked as local in the bridge
>> Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)
>> Bonding Mode: fault-tolerance (active-backup)
>> Primary Slave: None
>> Currently Active Slave: eth5
>> MII Status: up
>> MII Polling Interval (ms): 100
>> Up Delay (ms): 0
>> Down Delay (ms): 0
>> Slave Interface: eth4
>> MII Status: up
>> Speed: 10000 Mbps
>> Duplex: full
>> Link Failure Count: 1
>> Permanent HW addr: 68:05:ca:04:21:c6
>> Slave queue ID: 0
>> Slave Interface: eth5
>> MII Status: up
>> Speed: 10000 Mbps
>> Duplex: full
>> Link Failure Count: 1
>> Permanent HW addr: 68:05:ca:04:21:c7
>> Slave queue ID: 0
>> brctl showmacs gnt-br0
>> port no mac addr is local? ageing timer
>> 1 00:50:56:9c:0c:10 no 0.00
>> 2 26:4b:49:53:a7:c8 yes 0.00
>> 1 3e:b6:00:6a:d3:da no 64.96
>> 1 68:05:ca:04:21:c6 yes 0.00
>> 1 68:05:ca:04:22:38 no 0.19
>> 1 68:05:ca:04:22:86 no 0.50
>> 1 aa:00:00:1f:5c:e0 no 58.93
>> 1 aa:00:00:3d:8f:be no 65.28
>> 2 aa:00:00:4b:f4:6c no 119.13
>> 1 aa:00:00:4e:ff:92 no 65.09
>> 1 aa:00:00:75:c8:fa no 288.39
>> 1 aa:00:00:8d:6b:4b no 64.86
>> 1 aa:00:00:a3:81:14 no 64.97
>> 1 aa:00:00:b6:e1:8e no 64.54
>> 1 aa:00:00:f5:da:bc no 57.38
>> When i run netio in the vm on the local node it looks pretty good
>> TCP connection established.
>> Packet size 1k bytes: 703.86 MByte/s Tx, 1.024 GByte/s Rx.
>> Packet size 2k bytes: 1.396 GByte/s Tx, 1.362 GByte/s Rx.
>> Packet size 4k bytes: 1.503 GByte/s Tx, 1.362 GByte/s Rx.
>> Packet size 8k bytes: 1.639 GByte/s Tx, 1.318 GByte/s Rx.
>> Packet size 16k bytes: 1.734 GByte/s Tx, 1.263 GByte/s Rx.
>> Packet size 32k bytes: 1.805 GByte/s Tx, 1.277 GByte/s Rx.
>> Done.
>> When i do netio to another ganeti node in the testcluster or vm on a
>> different node (the other node has no bonding!)
>> TCP connection established.
>> Packet size 1k bytes: 277.63 MByte/s Tx, 6656.17 KByte/s Rx.
>> Packet size 2k bytes: 309.53 MByte/s Tx, 1159.69 KByte/s Rx.
>> Packet size 4k bytes: 323.91 MByte/s Tx, 2002.59 KByte/s Rx.
>> Packet size 8k bytes: 321.66 MByte/s Tx, 2265.05 KByte/s Rx.
>> Packet size 16k bytes: 336.52 MByte/s Tx, 4963.96 KByte/s Rx.
>> Packet size 32k bytes: 305.09 MByte/s Tx, 2134.77 KByte/s Rx.
>> Done.
>> Looks like the traffic going in is being dropped or something.
>> I found something on the kvm mailinglist but this is pretty old and
>> already fixed.
>> Any ideas on this?
>> Regards
>> Thomas
