[Openstack] Internet access within launched instances too slow

Rahul Sharma rahulsharmaait at gmail.com
Tue May 28 10:45:28 UTC 2013


Thanks JuanFra. I will use these and let you know the status.

Thanks and Regards
Rahul Sharma


On Tue, May 28, 2013 at 4:04 PM, JuanFra Rodriguez Cardoso <
juanfra.rodriguez.cardoso at gmail.com> wrote:

> Have you tried configuring your compute nodes with the following options
> in file 'nova.conf'?
>
> These options could be improve your instance performance:
>
> libvirt_cpu_mode = host-passthrough
> libvirt_use_virtio_for_bridges = True
>
>
>
> PD: I suppose you are using:
>
> libvirt_type = kvm
> compute_driver = libvirt.LibvirtDriver
>
>
>  ---
> JuanFra
>
>
> 2013/5/28 Rahul Sharma <rahulsharmaait at gmail.com>
>
>> I checked, they are fine. nslookup is giving correct result.
>>
>> root at instance1:/home/ubuntu# nslookup www.google.com
>> Server:         192.168.0.4
>> Address:        192.168.0.4#53
>>
>> Non-authoritative answer:
>> Name:   www.google.com
>> Address: 74.125.135.147
>> Name:   www.google.com
>> Address: 74.125.135.99
>> Name:   www.google.com
>> Address: 74.125.135.103
>> Name:   www.google.com
>> Address: 74.125.135.104
>> Name:   www.google.com
>> Address: 74.125.135.105
>> Name:   www.google.com
>> Address: 74.125.135.106
>>
>> -Regards
>> Rahul
>>
>>
>> On Tue, May 28, 2013 at 3:42 PM, Balamurugan V G <balamuruganvg at gmail.com
>> > wrote:
>>
>>> Check if you have the right DNS server settings on your VM. Sometimes
>>> even that can slow the access.
>>>
>>> Regards,
>>> Balu
>>>
>>> On Tue, May 28, 2013 at 3:31 PM, Rahul Sharma <rahulsharmaait at gmail.com>
>>> wrote:
>>> > Yes, I am using KVM.
>>> >
>>> > -Regards
>>> > Rahul Sharma
>>> >
>>> >
>>> > On Tue, May 28, 2013 at 2:49 PM, JuanFra Rodriguez Cardoso
>>> > <juanfra.rodriguez.cardoso at gmail.com> wrote:
>>> >>
>>> >> Hi:
>>> >>
>>> >> Which hypervisor are you using? KVM with virtio driver?
>>> >>
>>> >> ---
>>> >> JuanFra
>>> >>
>>> >>
>>> >> 2013/5/28 Rahul Sharma <rahulsharmaait at gmail.com>
>>> >>>
>>> >>> Hi All,
>>> >>>
>>> >>> I have a multinode setup of Openstack-Grizzly release with Networking
>>> >>> node as a separate machine. I am able to successfully bring up
>>> instances and
>>> >>> ping to google from within the instances. Everything is working fine
>>> except
>>> >>> the speed of internet access from within the instances.
>>> >>>
>>> >>> When I try to "wget <file>" or do "apt-get update", its taking a lot
>>> of
>>> >>> time(1 hr 40 mins for apt-get update). However, if I do the same on
>>> the
>>> >>> physical compute-nodes or on the network-node, it updates within
>>> seconds. I
>>> >>> am not sure why the network access within the instances is so slow
>>> which on
>>> >>> the other hand is quite fast on the hosts.
>>> >>>
>>> >>> Any pointers or steps to debug the issue would be really helpful.
>>> Please
>>> >>> let me know how I can debug this scenario.
>>> >>>
>>> >>> Thanks and Regards
>>> >>> Rahul Sharma
>>> >>>
>>> >>> _______________________________________________
>>> >>> Mailing list: https://launchpad.net/~openstack
>>> >>> Post to     : openstack at lists.launchpad.net
>>> >>> Unsubscribe : https://launchpad.net/~openstack
>>> >>> More help   : https://help.launchpad.net/ListHelp
>>> >>>
>>> >>
>>> >
>>> >
>>> > _______________________________________________
>>> > Mailing list: https://launchpad.net/~openstack
>>> > Post to     : openstack at lists.launchpad.net
>>> > Unsubscribe : https://launchpad.net/~openstack
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>>> >
>>>
>>
>>
>
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