Matlab HIGH cpu usage even when idle
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The CPU load is very high all the time. Even fresh after starting matlab with no variables and no programs running.
Its about 35%-45% all the time. Here you can see the trace in time of Matlabs cpu load:
Setup: r2012a on win7 64bit, 8gb ram, 200gb free disk space,intel U9400 2core cpu(laptop),java Version 6 Update 31.
What can be causing this?
thx
9 个评论
per isakson
2012-5-12
Did you ask Technical Support? Matlab shouldn't do that. Something is wrong.
Germán
2013-2-25
I'm getting the exact same behavior, I'm running R2012a on linux. To make it worse I always leave 2 sessions open which use 100% of of 2 cores when idle.
Walter Roberson
2013-2-25
Datapoint: I never get this behavior on OS-X Lion with R2012a.
Germán
2013-4-7
For the sake of people who might be having the same issue I finally solved it. It was the JxBrowser renderer, the issue starts after the first time I open a help window. In order to use the HTML renderer I included
com.mathworks.mlwidgets.html.HtmlComponentFactory.setDefaultType('HTMLRENDERER');
on my startup.m and that stopped the high cpu usage.
Walter Roberson
2013-4-7
Thanks for the update.
Christoph
2014-2-5
There is now an answer from the Mathworks Support team to this very question: http://www.mathworks.com/matlabcentral/answers/114915-why-does-matlab-cause-my-cpu-to-spike-even-when-matlab-is-idle-in-matlab-8-0-r2012b
Pief
2019-1-17
2019 and still have this problem. matlab_R2017b using a lot of energy/memory (it's always 'using significant energy' according to the battery dropdown) even when not running any code. macbookpro 2.7ghz, 8gb ram, macos mojave 10.14.2. Any solutions?
Brett Schmidt
2019-2-18
I am also suffering this issue right now. I can't even use the text editor.
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