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Leak Suspect Report makes huge file [message #1839802]

Mon, 29 March 2021 10:10

Jafet Roth

Messages: 4
Registered: March 2021

Junior Member

I was about to analyse a heap dump from my Moded Minecraft Server and the Leak Suspect Report never finished loading and I had to stop the programm caus my SSD was out of storage, becaus of the huge html file it produced.
Here you can see it in WinDirStat

index.php/fa/40238/0/

I used the standalone installation of Eclipse Memory Analyzer and got the Version 1.11.0

Uh and I cant uploade the hprof file becaus its 4 GB, but I will find a way to share it if necessary (which makes sense).

Also I made another heap dump of the same Server and with that one everything was fine. So it has to be a special problem with this particular dump I guess.

Attachment: Huge Size.PNG
(Size: 1.23MB, Downloaded 951 times)

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Re: Leak Suspect Report makes huge file [message #1839887 is a reply to message #1839802]

Wed, 31 March 2021 07:07

Andrew Johnson

Messages: 205
Registered: July 2009

Senior Member

That huge file is not right.
Is there a way you can extract the first part of the huge file ? You will need to delete one of those huge report directories so you have some free disk space and then run, for example, from PowerShell:

gc -Delimiter ">" -TotalCount 50000 .\28.html >28short.html

We can then see which part of the report is so big.

If you can compress the HPROF file (with zip, gzip etc. or in Windows send it to a compressed folder) then that might make the file more manageable to upload somewhere.

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Re: Leak Suspect Report makes huge file [message #1839896 is a reply to message #1839887]

Wed, 31 March 2021 10:19

Jafet Roth

Messages: 4
Registered: March 2021

Junior Member

So I already deletet the hug files, but I made a new one with about 3 GB (I stopped the program there, should be enough I guess), compressed it to zip and also compressed the heap dump, which rly helped alot (why didn't I think about that) and uploaded both to
Dropbox: https://www.dropbox.com/sh/8pyvix1m7p86qf2/AAA6sGby2CIbiMC84weHMOWna?dl=0

Thank you so far.

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Re: Leak Suspect Report makes huge file [message #1839903 is a reply to message #1839896]

Wed, 31 March 2021 14:28

Andrew Johnson

Messages: 205
Registered: July 2009

Senior Member

Thanks. I think I have an idea what has gone wrong.

It is in 'Thread Stack and Involved Local Variables' where a tree is being continually expanded.
It is meant to show the thread, which is expanded to show the stack frames, and the the stack frames which have a reference to the leaking object, but the objects are being expanded too.

I have opened a bug:
572491: Leak Suspect Report makes huge file

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Re: Leak Suspect Report makes huge file [message #1839905 is a reply to message #1839903]

Wed, 31 March 2021 15:43

Jafet Roth

Messages: 4
Registered: March 2021

Junior Member

Okay, interesting. This was also the heapdump I suspected Memory Leak (caus my Minecraft server ran out of Memory). Sorry I am more or less a noob, how do I search now for the leak, would be great if you know any good advice.

Thanks.

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