| 2020-04-23 08:05:44 |
Arun S A G |
bug |
|
|
added bug |
| 2020-04-23 09:29:30 |
Arun S A G |
description |
The revision_number is used to check if the message received at the agent is stale or not. However neutron doesn't consider a message as stale if the revision_number in NetworkCache is equal to the revision_number of the incoming payload. It is only considered stale if the revision_number in NetworkCache is greater than the revision_number in incoming payload
https://opendev.org/openstack/neutron/src/commit/10230683a2ce2f26279feaa34af4c0eccbfcb16c/neutron/agent/dhcp/agent.py#L852
Because of this lot more messages not considered as stale even though they are. This causes lot of "reload_allocations" and dhcp reloads and can cause bottlenecks in busy openstack environments. |
The revision_number is used to check if the message received at the agent is stale or not. A message treated as stale only if the revision_number in NetworkCache is greater than the revision_number in incoming payload
https://opendev.org/openstack/neutron/src/commit/10230683a2ce2f26279feaa34af4c0eccbfcb16c/neutron/agent/dhcp/agent.py#L852
IMO, we should consider making a message stale if the NetworkCache['revision_number'] >= payload['revision_number']
This will discard lot more messages as stale than the current logic and remove dhcp bottleneck in busy openstack ssytems. |
|
| 2020-04-23 09:30:29 |
Arun S A G |
description |
The revision_number is used to check if the message received at the agent is stale or not. A message treated as stale only if the revision_number in NetworkCache is greater than the revision_number in incoming payload
https://opendev.org/openstack/neutron/src/commit/10230683a2ce2f26279feaa34af4c0eccbfcb16c/neutron/agent/dhcp/agent.py#L852
IMO, we should consider making a message stale if the NetworkCache['revision_number'] >= payload['revision_number']
This will discard lot more messages as stale than the current logic and remove dhcp bottleneck in busy openstack ssytems. |
The revision_number is used to check if the message received at the agent is stale or not. A message is treated as stale only if the revision_number in NetworkCache is greater than the revision_number in incoming payload
https://opendev.org/openstack/neutron/src/commit/10230683a2ce2f26279feaa34af4c0eccbfcb16c/neutron/agent/dhcp/agent.py#L852
IMO, we should consider making a message stale if the NetworkCache['revision_number'] >= payload['revision_number']
This will discard lot more messages as stale than the current logic and remove dhcp bottleneck in busy openstack environments. |
|
| 2020-04-23 20:13:11 |
Brian Haley |
bug |
|
|
added subscriber Brian Haley |
| 2020-04-23 20:13:30 |
Brian Haley |
neutron: status |
New |
Confirmed |
|
| 2020-04-23 20:13:36 |
Brian Haley |
neutron: importance |
Undecided |
Medium |
|
| 2020-04-23 21:11:15 |
Nate Johnston |
neutron: importance |
Medium |
Low |
|
| 2020-04-23 21:11:19 |
Nate Johnston |
neutron: status |
Confirmed |
Triaged |
|
| 2021-02-25 01:06:15 |
Miguel Lavalle |
neutron: assignee |
|
Miguel Lavalle (minsel) |
|
