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[Mike Fairbank <michael.fairbank@xxxxxxxxxx>]

I have noticed this bug.  I have a 5MB document with very long lines.
Each line is approximately a million characters wide.

If you view it with word wrap OFF then the computer becomes very
unresponsive.  Scrolling the scrollbars particularly hangs the computer
for a long time.

I'm on gedit 2.30.4.  I'm using a 15GB machine so manipulating a 5MB
text file should not be causing it to sweat.

I've attached an example file that causes the problem.  Make sure you
view it with text wrap off.

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https://bugs.launchpad.net/bugs/156201

Title:
  gedit handles opening big files badly

Status in Light-Weight Text Editor for Gnome:
  Confirmed
Status in “gedit” package in Ubuntu:
  Triaged

Bug description:
  Binary package hint: gedit

  Opening big text files (400 MB, 750 MB) in gedit is bad
  - from a usability standpoint
    -> There's no progress bar or cancel button for the action, and the load takes a long time.
  - from a system standpoint:
    -> In earlier versions, gedit would take so much memory until the system swapped all other applications to disk, and the system became unusable.
    -> Since Ubuntu 9.04 Beta, gedit crashes without a GUI message, but the message "failed to allocate <X> bytes" in the console.


  
  Original description:
  I just opened a 400 MB text file (mbox mail file) in gedit, and it my system has now been unresponsive for minutes. Other editors can open large files without a problem. Also, there's no progress bar or cancel button that would make it easy to see how long gedit is loading the file or to cancel the load.

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