yahoo-eng-team team mailing list archive

[Sridar Kandaswamy <skandasw@xxxxxxxxx>]

Public bug reported:

In our environments on deployments at reasonable scale (100 networks
with 4 subnets each) with 3 Controllers and abt 50 Computes we notice
high latency on subnet deletion. But even in smaller deployments we are
able to see issues using rally create_and_delete_subnets tests[1]. There
is a correlation with increasing load and concurrency. These tests were
run on the master branch with a devstack based single node
deployment(VM). Our actual deployments are on high end physical servers
(Bare Metal).

I suspect that issues are around here:
https://github.com/openstack/neutron/blob/master/neutron/db/db_base_plugin_v2.py#L991

I am not sure if this is a known issue and folks already have some
thoughts around this.

[1] http://paste.openstack.org/show/749782/

** Affects: neutron
     Importance: Undecided
         Status: New

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to neutron.
https://bugs.launchpad.net/bugs/1826480

Title:
  High latency on delete_subnets with increasing load and concurrency

Status in neutron:
  New

Bug description:
  In our environments on deployments at reasonable scale (100 networks
  with 4 subnets each) with 3 Controllers and abt 50 Computes we notice
  high latency on subnet deletion. But even in smaller deployments we
  are able to see issues using rally create_and_delete_subnets tests[1].
  There is a correlation with increasing load and concurrency. These
  tests were run on the master branch with a devstack based single node
  deployment(VM). Our actual deployments are on high end physical
  servers (Bare Metal).

  I suspect that issues are around here:
  https://github.com/openstack/neutron/blob/master/neutron/db/db_base_plugin_v2.py#L991

  I am not sure if this is a known issue and folks already have some
  thoughts around this.

  [1] http://paste.openstack.org/show/749782/

To manage notifications about this bug go to:
https://bugs.launchpad.net/neutron/+bug/1826480/+subscriptions