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[Bug 704623] Re: Thunderbird renders system unusable / uses 100% CPU while indexing new messages

To: desktop-packages@xxxxxxxxxxxxxxxxxxx
From: Thomas Schweikle <704623@xxxxxxxxxxxxxxxxxx>
Date: Sun, 02 Nov 2014 08:24:12 -0000
Reply-to: Bug 704623 <704623@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

This bug cant be fixed until indexing mailboxes is overhauled. There are some workarounds, but these do not really solve the bug at all. Main problem: if you set the time between re-index runs to short one process wont have finished before the next one is started. You may end up having tens to hundred indexing processes run. slowing down the whole system or, at least make thunderbird unresponsive.
Setting re-index time up solves this partly, by lowering opportunity having an index process started before the before started one finished. Solving the issue means to invent locking for those processes: if one is started an other one started later lands in a queue or terminates immediately. Both solutions take some non trivial changes to how indexing is triggered.

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https://bugs.launchpad.net/bugs/704623

Title:
  Thunderbird renders system unusable / uses 100% CPU while indexing new
  messages

Status in Mozilla Thunderbird Mail and News:
  Expired
Status in “thunderbird” package in Ubuntu:
  Confirmed
Status in “icedove” package in Debian:
  New
Status in “thunderbird” package in Fedora:
  Unknown

Bug description:
  Binary package hint: thunderbird

  After starting Thunderbird, then open any available nntp-server
  (news.gmane.org, or news.individual.org (you'll need an account to
  access this server)). Thunderbird will immediately block on any
  newsgroup with a reasonable amount of new messages. It will consume
  100% CPU, slow down the whole system significantly. After a while
  Thunderbird is grayed out most of the time. You can't access it
  anymore. Sometimes this lasts for hours. Working with Thunderbird is
  impossible.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.10
  Package: thunderbird 3.1.7+build3+nobinonly-0ubuntu0.10.10.1
  Uname: Linux 2.6.36.2 x86_64
  Architecture: amd64
  Date: Tue Jan 18 21:29:52 2011
  ProcEnviron:
   PATH=(custom, user)
   LANG=de_DE.utf8
   SHELL=/bin/bash
  SourcePackage: thunderbird

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