[Bug 1239827] Re: vim unusable with large files

[Eldar Khayrullin]

Insert or paste became slow in my case in line 670.
But then I go to the first line and edit it then undo changes.
Then return to 670 line. Slowing disappear.

File size 4677 lines.

VIM - Vi IMproved 7.4 (2013 Aug 10, compiled Jun 16 2016 10:50:38)
Included patches: 1-1689

Package: vim-nox-py2 2:7.4.1689-3ubuntu amd64

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Title:
  vim unusable with large files

Status in vim package in Ubuntu:
  Confirmed

Bug description:
  Try to edit a text file about 200MB in size, e.g. an sql, in my case a sql database dump.
  Vim becomes unusably slow to respond to keyboard and mouse input, or at least to mousewheel scrolling.

  Response time of the editor should not depend on the total size of the
  file being edited, be it 200MB or 20GB.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: vim 2:7.3.547-6ubuntu5
  ProcVersionSignature: Ubuntu 3.8.0-31.46-generic 3.8.13.8
  Uname: Linux 3.8.0-31-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8.3
  Architecture: amd64
  Date: Mon Oct 14 21:45:53 2013
  InstallationDate: Installed on 2013-10-11 (3 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MarkForUpload: True
  SourcePackage: vim
  UpgradeStatus: No upgrade log present (probably fresh install)

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