openstack team mailing list archive

[JuanFra Rodriguez Cardoso <juanfra.rodriguez.cardoso@xxxxxxxxx>]

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@xxxxxxxxx>

> I checked, they are fine. nslookup is giving correct result.
>
> root@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@xxxxxxxxx>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@xxxxxxxxx>
>> wrote:
>> > Yes, I am using KVM.
>> >
>> > -Regards
>> > Rahul Sharma
>> >
>> >
>> > On Tue, May 28, 2013 at 2:49 PM, JuanFra Rodriguez Cardoso
>> > <juanfra.rodriguez.cardoso@xxxxxxxxx> wrote:
>> >>
>> >> Hi:
>> >>
>> >> Which hypervisor are you using? KVM with virtio driver?
>> >>
>> >> ---
>> >> JuanFra
>> >>
>> >>
>> >> 2013/5/28 Rahul Sharma <rahulsharmaait@xxxxxxxxx>
>> >>>
>> >>> 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
>> >>>
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>> >>
>> >
>> >
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>>
>
>