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[Bug 784519] Re: Natty: performance regression of Gnome terminal

 

Also, there is someone who is interested in writing a patch for this,
though I am at this point unsure if there is enough information
available to fix the bug. (See
https://answers.launchpad.net/ubuntu/+source/gnome-
terminal/+question/173876, specifically post #4.)

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https://bugs.launchpad.net/bugs/784519

Title:
  Natty: performance regression of Gnome terminal

Status in “gnome-terminal” package in Ubuntu:
  Incomplete

Bug description:
  Binary package hint: gnome-terminal

  I often use to run simulations on my workstations. Such a simulation
  typically consumes almost all CPU time but only a fraction of memory.
  Under such conditions previous ubuntu releases 9.10 (Jaunty) and 10.04
  (Lucid) were still perfectly responsive, including GNOME terminal.

  In Natty, I observe very slow switching between terminal tabs when the
  machine is under constant computational load. Similarly I observe slow
  response when I want to scroll text on the terminal (using Shift
  PgUp).

  It is true that I have terminal opened to its full size but this is
  the same condition as I used used to apply also on the previous ubuntu
  releases that were installed on the workstation in the past.

  Finally I add that (all under the conditions of the computational load):
  * Switching  between workspaces seems to be unaffected by switching to Natty (i.e. as fast as on previous ubuntu releases).
  * Switching between Firefox tabs also seems to be unaffected and is in most cases noticeably faster than switching between GNOME terminals.
  * Switching between several GNOME terminals is slow and is often such that I first see just blank terminal and after a delay of a second the text in the terminal finally gets shown.

  * I am using Ubuntu Classic (No effects), 64-bit variant.
  * The machine is well equipped: it has an Intel Core2 Quad processor,  all its cores running at their full frequency 2336 MHz,  4 GB of memory.
  * I attach output of the top program to see details of the computational load.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: gnome-terminal 2.32.1-0ubuntu3
  ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
  Uname: Linux 2.6.38-8-generic x86_64
  NonfreeKernelModules: nvidia
  Architecture: amd64
  Date: Wed May 18 11:58:29 2011
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
  ProcEnviron:
   LANGUAGE=en
   PATH=(custom, user)
   LANG=en_GB.utf8
   LC_MESSAGES=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: gnome-terminal
  UpgradeStatus: No upgrade log present (probably fresh install)

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