Re: [Openstack-operators] [Openstack] Slow internet speed - Instances with floating IP

2017-04-04 Thread Kevin Benton 
I recommend filing an issue against that speedtest-cli script. I noticed
the timer seems to be started before the DNS lookup occurs (before call to
urlopen). This means any DNS issues impact the measurement of what is
supposed to be network throughput.

On Apr 4, 2017 13:19, "John Petrini"  wrote:

> Hi All,
>
> Turns out this was a DNS issue. The speedtest-cli script does a lot of
> lookups and these lookups were hanging due to parallel A and  requests
> resulting in the unexpected results. I added the following to
> /etc/resolv.conf and the issue seems to be resolved.
>
> options single-request-reopen
>
> Thanks,
>
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>
> John Petrini
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Re: [Openstack-operators] [Openstack] Slow internet speed - Instances with floating IP

2017-04-04 Thread John Petrini 
Hi All,

Turns out this was a DNS issue. The speedtest-cli script does a lot of
lookups and these lookups were hanging due to parallel A and  requests
resulting in the unexpected results. I added the following to
/etc/resolv.conf and the issue seems to be resolved.

options single-request-reopen

Thanks,

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Re: [Openstack] Slow internet speed - Instances with floating IP

2017-04-04 Thread John Petrini 
Hi Mohit,

The tenant networks use an MTU of 8950. The floating network uses and MTU
of 9000.

neutron net-show 4305e3d5-b083-4f33-a2a0-1dfccf1238b6
+---+--+
| Field | Value|
+---+--+
| admin_state_up| True |
| availability_zone_hints   |  |
| availability_zones| nova |
| created_at| 2016-10-10T15:35:44  |
| description   |  |
| id| 4305e3d5-b083-4f33-a2a0-1dfccf1238b6 |
| ipv4_address_scope|  |
| ipv6_address_scope|  |
| mtu   | 8950 |
| name  | systems-net  |
| port_security_enabled | True |
| provider:network_type | vxlan|
| provider:physical_network |  |
| provider:segmentation_id  | 100  |
| router:external   | False|
| shared| False|
| status| ACTIVE   |
| subnets   | d1265c93-d47c-4902-89a6-8ad3172fb946 |
| tags  |  |
| tenant_id | c7c31d0bd344476a8c8ca39a19e1be15 |
| updated_at| 2016-10-10T15:35:44  |
+---+--+

neutron net-show 4c7544f3-c06b-48cf-babc-015d29dd7e62
+---+--+
| Field | Value|
+---+--+
| admin_state_up| True |
| availability_zone_hints   |  |
| availability_zones| nova |
| created_at| 2016-09-23T11:07:56  |
| description   |  |
| id| 4c7544f3-c06b-48cf-babc-015d29dd7e62 |
| ipv4_address_scope|  |
| ipv6_address_scope|  |
| is_default| False|
| mtu   | 9000 |
| name  | admin_floating_net   |
| port_security_enabled | True |
| provider:network_type | flat |
| provider:physical_network | physnet1 |
| provider:segmentation_id  |  |
| router:external   | True |
| shared| False|
| status| ACTIVE   |
| subnets   | c70635c4-9bf7-4e4d-9353-c619e196cdf0 |
| tags  |  |
| tenant_id | a2b6f1b348e54229b3244183d6aa41a5 |
| updated_at| 2016-09-23T11:07:56  |
+---+--+

Thank You,

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Re: [Openstack] Slow internet speed - Instances with floating IP

2017-04-04 Thread Mohit . 
Hello John,


Can you update (increase) the MTU parameter set under "neutron net-show
{your-net-name}"


Thanks
Mohit.


On Tue, Apr 4, 2017 at 4:01 PM, John Petrini  wrote:

> Adding the OpenStack list in hopes this might get some attention there.
>
> Thanks All,
>
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Re: [Openstack] Slow internet speed - Instances with floating IP

2017-04-04 Thread John Petrini 
Adding the OpenStack list in hopes this might get some attention there.

Thanks All,

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John Petrini
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