How to change network bandwidth of instances?

asked 2013-04-22 04:28:09 -0600

javsalgar gravatar image

updated 2013-04-22 10:55:57 -0600

smaffulli gravatar image

I have an Openstack Cloud Setup where the bare metal nodes work with 1000 MB/s network bandwidth. However, I do not know why, VM's have a bandwidth of 100 MB/s. Where can I change this setting?

The quantum network setup is flat networking with a provider router.

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Which hypervisor are you using? Also, within your instance, which network card is provided?

rdo gravatar imagerdo ( 2013-04-22 10:25:30 -0600 )edit

@rdo the hypervisor is KVM, and the network driver is Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 20) with 8139too Fast Ethernet driver 0.9.28.

javsalgar gravatar imagejavsalgar ( 2013-04-22 17:49:48 -0600 )edit

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answered 2013-04-22 23:30:01 -0600

Yaguang gravatar image

updated 2013-04-22 23:30:49 -0600

you may need to change nova.conf to use libvirtusevirtioforbridges=true which provide high performance of network.

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Asked: 2013-04-22 04:28:09 -0600

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Last updated: Apr 22 '13