yahoo-eng-team team mailing list archive

[Artom Lifshitz <notartom@xxxxxxxxx>]

Public bug reported:

Description
===========

Evacuation takes a long time if the destination host a large number of
network interfaces.

Steps to reproduce
==================

1. Have a host down, or force it down.

2. Evacuate instances to a host with a large number of network
interfaces.

Expected result
===============

Evacuation completes in a reasonable time frame.

Actual result
=============

Evacuation takes too long.

Additional info
===============

This was initially reported against OSP10/Newton [1]. In that case,
based on the included sosreports, the compute host has 1324 network
interfaces, and 109 instances are being evacuated. That means in total,
there's 109 * 1324 = 144316 iterations over the loop in
get_machine_ips().

[1] https://bugzilla.redhat.com/show_bug.cgi?id=1709400

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1837075

Title:
  Evacuation takes too long when destination host has a large number of
  NICs

Status in OpenStack Compute (nova):
  New

Bug description:
  Description
  ===========

  Evacuation takes a long time if the destination host a large number of
  network interfaces.

  Steps to reproduce
  ==================

  1. Have a host down, or force it down.

  2. Evacuate instances to a host with a large number of network
  interfaces.

  Expected result
  ===============

  Evacuation completes in a reasonable time frame.

  Actual result
  =============

  Evacuation takes too long.

  Additional info
  ===============

  This was initially reported against OSP10/Newton [1]. In that case,
  based on the included sosreports, the compute host has 1324 network
  interfaces, and 109 instances are being evacuated. That means in
  total, there's 109 * 1324 = 144316 iterations over the loop in
  get_machine_ips().

  [1] https://bugzilla.redhat.com/show_bug.cgi?id=1709400

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