kernel-packages team mailing list archive

[Chris J Arges <1201869@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

OpenStack Neutron does IP forwarding through a network namespace. A veth
pair is used to connect into the namespace. The veth pair appears to be
the bottleneck, independent of network namespace. In newer versions of
Linux (3.9) throughput is much higher.

This has been confirmed on kernels from 3.5.x-3.8.x. (Quantal and Raring
lts backports)

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Fix Released

** Affects: linux (Ubuntu Quantal)
     Importance: Medium
     Assignee: Chris J Arges (arges)
         Status: In Progress

** Affects: linux (Ubuntu Raring)
     Importance: Medium
     Assignee: Chris J Arges (arges)
         Status: In Progress


** Tags: bot-stop-nagging

** Also affects: linux (Ubuntu Quantal)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Raring)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu)
     Assignee: Chris J Arges (arges) => (unassigned)

** Changed in: linux (Ubuntu)
       Status: New => Fix Released

** Changed in: linux (Ubuntu Quantal)
       Status: New => In Progress

** Changed in: linux (Ubuntu Raring)
       Status: New => In Progress

** Changed in: linux (Ubuntu Raring)
     Assignee: (unassigned) => Chris J Arges (arges)

** Changed in: linux (Ubuntu Quantal)
     Assignee: (unassigned) => Chris J Arges (arges)

** Changed in: linux (Ubuntu Raring)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu Quantal)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1201869

Title:
  poor networking throughput across an OpenStack Neutron router on
  3.5/3.8 kernels

Status in “linux” package in Ubuntu:
  Fix Released
Status in “linux” source package in Quantal:
  In Progress
Status in “linux” source package in Raring:
  In Progress

Bug description:
  OpenStack Neutron does IP forwarding through a network namespace. A
  veth pair is used to connect into the namespace. The veth pair appears
  to be the bottleneck, independent of network namespace. In newer
  versions of Linux (3.9) throughput is much higher.

  This has been confirmed on kernels from 3.5.x-3.8.x. (Quantal and
  Raring lts backports)

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