CPU load pegs at 100% when checking for and downloading e-ma
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Running SuSE 11.4, 64 bit.
KDE 4.6.00 KMail 1.13.6 CPU Information Processor (CPU): AMD Athlon(tm) II X2 240 Processor Speed: 800.00 MHz Cores: 2 4 GB Memory Linux 2.6.37.6-0.9-desktop 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. I've been running Clam AV and Spam Assassin and have not had this problem until recently. 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 only changes I've made to my system are those that occur when I do the SuSE updates through YaST. I have asked on opensuse.org 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 (Bugzilla) and also post my problem to the KDE forum. 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. The thread discussing my problem and the steps I tried to resolve it (include several outputs from the konsole) are here: http://forums.opensuse.org/english/get- ... -stop.html Thanks for any suggestions. socref |
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How much memory does your computer have, and what amount is used by "Application Data" in KInfoCenter > Memory?
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As noted at beginning of my post, 4 GB KinfoCenter says my system is using 23% for Application Data. Is there a way I can post a screen shot here? I don't see that option available on the forum, but maybe I'm overlooking it? Thx socref |
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Administrator
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The forum itself does not support the uploading of attachments for various reasons. I suggest using sites such as Picasa / Imagebin / Imageshack / etc, then posting the link here. However, based on what you have stated, your system should be more than capable of running this without issue.
Can you try running "kbuildsycoca4 --noincremental" please?
KDE Sysadmin
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OK, here it is.
socref |
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Additional information.
I created a new user and then used KMail to see if the problem existed with a new user. With Spam Assassin and Clam AV both running the same thing happened. The CPUs (both cores) pegged alternately, and I was unable to do any typing in any program or read e-mails until the processors were released by the KMail download process. I then took Spam Assassin and Clam AV out of the KMail filtering system. As before the performance improved a lot. But still, with the processor and RAM I have it seems that KMail when protected by Spam Assassin and Clam AV should not so overtax the system that I can't do anything else while e-mail is downloading. Is this something I just have to live with if running Spam Assassin and Clam AV? Thx |
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As far as I can tell, this is a limitation of the way KMail 1 handled filtering.
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