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David Benn
David Benn's picture
memory overflow

Hi Brad

Thanks for your bug report. The short answer is that this is a known problem that has been addressed in some ways but I completely agree, it is not yet a solved problem and needs more attention.

There is an old ticket for this but I've just created a new one:

There is at least one simple way to improve the scenario you are faced with: increase the amount of memory available to the Java Virtual Machine when VStar is running, or "heap" size. This is mentioned in the ticket above. I can say more here or contact you via email about this.


WBY's picture
VStar Memory Overflow

I think VStar has some memory leaks. After sequentially loading analyzing and closing a number of data files, annecdotally it seems to be more than 20 or so,  some with a few thousand observations, others with a few hundred,  VStar seems to run out of memory as though it wasn't fully emptying its memory space when each data file is closed. 

A screenshot of the error message when this occurred when starting a DCDFT on the next file

File upload: 
David Benn
David Benn's picture

Thanks for the screenshot Brad.

I'm capturing details here:

By the way, did you delete the original message that I replied to above?


David Benn
David Benn's picture
An odd counterpoint

Hi Brad

Today I've been working on and running a script that loads a few hundred datasets of at least 1000 observations per dataset, does period analysis, creates and saves a phase plot and saves this and light curve PNGs.

I'll have to compare notes with you in email on what you're loading compared to this etc.


sgor's picture
VStar on Mac


I purchased aa new Mac laptop and get his message when trying to run VStar:

"VStar" can't be opened because Apple cannot check ot for malicious software.

The software needs to be updated. Contact the developer for more information.

I am using the latest (2.21.2) VStar download

Anyone have any ideas?




David Benn
David Benn's picture
VStar on Mac

Hi George

Apologies for the delay.

I'm running macOS Catalina. Hw about you?

Are you using WebStart or the dmg downloaded from here:

I'm guessing the latter. If so, in Apple Preferences -> Security & Privacy -> General, does "Allow apps downloaded from:" have "App Store" or "App Store and identified developers" selected?

What version of Java? I don't think that's the issue here, but just for comparison.



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