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Thanks for running roborumble for so so many years! I tried to do the same thing with my VPSs but roborumble client kept getting killed in a few days.

What's your settings to keep roborumble running for such a long time? Did you experience similar problems running roborumble?

Funny thing that I don't do anything special. I just run the clients on my own computers. They all currently have Debian stable (stretch) linux distribution with openjdk-8 java. The robocode is installed manually in my home folder.

I run clients in the 'screen' sessions, so if I get disconnected the session survives. From time to time, I restart it manually, mostly for selfish reason of a quicker bot list upadate. But the current run is almost 100 days straight without interruption. My machines have 4 to 6 cores, so I just do normal office load (browsing, youtube, short term calculations) on them as well.

One more thing. I just checked that I client consumes about 4GB of memory (including virtual one) after that 100 days.

I would suspect that VPS shares you CPU with other virtual OSes and kills CPU consuming process forcefully.

For many years that I run robocode clients, I never had any problem with sporadic crashes. The restart happens only if my home looses power and UPS runs dry.

Thanks for your vital information! It seems that it is peak memory that kills my JVM in long run. killed by VPS may be another reason. I would try running the client with computers in my lab then ;)