System load issues

Concerning processing components: filters, file load/save, visualizations, communication ...
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squinto13
Posts: 2
Joined: Fri May 04, 2018 2:44 pm

System load issues

Post by squinto13 »

Hello,

We have been having memory processing issues running OpenViBE. In short, we're running identical versions of the same code in two institutions with virtually identical computer specifications. One version manages to keep the system load down around 20-30% indefinitely; one gradually creeps up to about 95% over the course of a few minutes and starts giving lag warnings thereafter. It should be mentioned that we are calling a MATLAB function, and currently we have different versions of MATLAB. However, the one that works better calls 2011a and the other calls 2015b. We have looked into many internal settings to see if they make a difference (sampling rate, # channels called, amount of memory allocated to MATLAB and OpenViBE, etc.) and we cannot meaningfully stop this gradual load issue.

Any input you might have on this matter would be very helpful!

jtlindgren
Posts: 775
Joined: Tue Dec 04, 2012 3:53 pm
Location: INRIA Rennes, FRANCE

Re: System load issues

Post by jtlindgren »

Hi,

are they identical versions of openvibe too? In some older ov versions the matlab scripting box had memory leaks that we've fixed since. You could of course try to run a profiler on each computer and see where the time is spent during the run (if not inside matlab). The differences in the two results might reveal something. Matlab also has its own profiler that can be used to dig into script execution times.


Cheers,
Jussi

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