Mailinglist Archive: opensuse-bugs (4156 mails)

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[Bug 740108] New: CPU load pegs at 100% when checking for and downloading e-mail-- can't type anything in any program until KMail processes stop
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Sat, 7 Jan 2012 20:54:50 +0000
  • Message-id: <>

Summary: CPU load pegs at 100% when checking for and
downloading e-mail-- can't type anything in any
program until KMail processes stop
Classification: openSUSE
Product: openSUSE 11.4
Version: Factory
Platform: 64bit
OS/Version: openSUSE 11.4
Status: NEW
Severity: Normal
Priority: P5 - None
Component: KDE3
AssignedTo: anixx@xxxxxxxxxxxx
ReportedBy: gilweber@xxxxxxxxxxxxx
QAContact: qa@xxxxxxx
Found By: ---
Blocker: ---

User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:9.0) Gecko/20100101

Running SuSE 11.4, 64 bit.

CPU Information
Processor (CPU): AMD Athlon(tm) II X2 240 Processor
Speed: 800.00 MHz
Cores: 2

4 GB Memory

Linux x86_64

Every time without exception that I click "check mail" in KMail (or KMail
automatically checks for new mail every 10 minutes) the computer is unable to
perform any other function until KMail has finished looking for and then
downloading any new e-mail. Any keystroking that I might be doing during this
time in another program (e.g., word-processing or entering an URL into Firefox)
shows nothing on the screen until after KMail has finished. Once Kmail is
finished then finally any keystroking I have done appears on the screen and the
computer catches up (returns to normal).

I have opened the System Monitor to observe CPU usage and at the moment I click
"check mail" one of the two processors immediately pins at 100%, then drops
while, simultaneously, the other CPU pins at 100% (or very close to 100%). The
two CPU load lines criss-cross so that while KMail is searching for and
downloading mail one CPU is always completely consumed and the other is
partially consumed.

KMail seems to be overwhelm the system and makes it impossible for the computer
to multi-task.

Both Spam Assassin and Clam AV are turned on in KMail. Removing Clam AV helps
quite a bit. Removing Spam Assassin helps less, but does help.

Additionally if I highlight any already-downloaded e-mail and label it as
"classify as spam," or click on anything KMail has identified as "spam" and
retag it "classify as not spam," the CPU pegs as previously described and
everything else stops.

This pegging of the CPU cores is a relatively recent problem. The only changes
I've made to my system are those that occur when I do the SuSE updates through

I have asked on forums (hardware) and gotten a good bit of help
(checking packages, versions, etc.), but the problem persists, and it was
suggested that I submit a bug report.

Please also note that I did a clean install of SuSE 11.4 (formatted entire
drive) and upon restoring my home directory the problem persists.

Reproducible: Always

Steps to Reproduce:
1. Click "check mail" in KMail.
2. Highlight a downloaded e-mail not identified as spam and then click "spam"
button to reclassify it as spam.
Actual Results:
Problem happens every time I use KMail.

Expected Results:
I used to be able to download my e-mail and continue multitasking. Now that is
impossible until the CPU is released. The release may not occur for 3-4 minutes
if I'm downloading a lot of e-mail.

The thread discussing my problem and the steps I tried to resolve it (include
several outputs from the konsole) are here:

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