[Bug 996151] [NEW] disable apt http pipelinig in quantal

[Ben Howard]

Public bug reported:

Per UDS session on Apt improvements, it has been proposed to remove apt
http pipelining

The reasons:
1. HTTP Pipelining has issue with certain proxy implementation
2. Some new object stores, like S3, or Google's APT repositories have problems with HTTP Pipelining

Running a test shows that disabling apt-pipelining has no perceptable
diffferenvce, and disabling apt pipeling actually performed slightly
better with an average of 31.899s versuses 32.456s. I tested an "apt-get
-y update" with and without apt HTTP pipelining turned on.

Pipelining on (apt-get -y upgrade):
33.92
31.37
31.64
31.63
33.29
33.08
32.92
32.88
31.73
31.98
32.01
32.96
31.51
32.68
33.25

Pipelining off (apt-get -o Acquire::http::Pipeline-Depth="0" -y upgrade):
31.66
31.59
31.24
31.30
31.29
32.85
32.75
31.50
31.18
32.26
31.43
33.28
31.67
32.45
32.04

** Affects: apt (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/996151

Title:
  disable apt http pipelinig in quantal

Status in “apt” package in Ubuntu:
  New

Bug description:
  Per UDS session on Apt improvements, it has been proposed to remove
  apt http pipelining

  The reasons:
  1. HTTP Pipelining has issue with certain proxy implementation
  2. Some new object stores, like S3, or Google's APT repositories have problems with HTTP Pipelining

  Running a test shows that disabling apt-pipelining has no perceptable
  diffferenvce, and disabling apt pipeling actually performed slightly
  better with an average of 31.899s versuses 32.456s. I tested an "apt-
  get -y update" with and without apt HTTP pipelining turned on.

  Pipelining on (apt-get -y upgrade):
  33.92
  31.37
  31.64
  31.63
  33.29
  33.08
  32.92
  32.88
  31.73
  31.98
  32.01
  32.96
  31.51
  32.68
  33.25

  Pipelining off (apt-get -o Acquire::http::Pipeline-Depth="0" -y upgrade):
  31.66
  31.59
  31.24
  31.30
  31.29
  32.85
  32.75
  31.50
  31.18
  32.26
  31.43
  33.28
  31.67
  32.45
  32.04

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