yahoo-eng-team team mailing list archive

[Chad Smith <1794982@xxxxxxxxxxxxxxxxxx>]

This bug is believed to be fixed in cloud-init in version 19.1. If this
is still a problem for you, please make a comment and set the state back
to New

Thank you.

** Changed in: cloud-init
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1794982

Title:
  drop /etc/apt/apt.conf.d/90cloud-init-pipelining in 16.04+

Status in cloud-init:
  Fix Released

Bug description:
  /etc/apt/apt.conf.d/90cloud-init-pipelining disables pipelining which
  causes a significant performance reduction in apt downloads. This
  should not be necessary in 16.04, as apt can detect broken pipeline
  responses, fix it, and disable pipelining for the next connection (it
  can also match the response based on the hashes, rather than just
  complaining the hashes are wrong).

  This is causing a significant performance decrease, as a small sample,
  firefox in a fresh lxd container:

  without pipelining: Fetched 81.1 MB in 6s (13.2 MB/s)
  with pipelining: Fetched 81.1 MB in 2s (32.2 MB/s)

  (400 Mbit/s connection, 25-30ms RTT, xenial LXD container)

  Related bugs:
   * bug 948461: apt-get hashsum/size mismatch because s3 mirrors don't support http pipelining correctly

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