Public bug reported:
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)
** Affects: gnome-terminal (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug natty
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https://bugs.launchpad.net/bugs/784519
Title:
Natty: performance regression of Gnome terminal
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