Hi, I am currently running OpenJDK 16 on my server (will upgrade to 17 when I'm sure none of my code is dependent on illegal accesses). OS is Ubuntu 18.
I am noticing that a long running server process eventually (after a few days) grows enormously in its resident size. Right now it is at 7 GB. Performing a GC doesn't get it any lower. The weird part is that the process is run with -Xmx2g, and currently used heap according to java.lang.Runtime is only 400 MB after GC, going up to at most 1 GB in operation. How do these numbers fit together? I've seen the resident size even higher (13+ GB), and at that point I noticed the process getting significantly slower too (web pages taking 1-2 seconds to load instead of near instant). At a typical moment in time, no Java threads are running (I monitor this every second). An obvious suspect is of course any native library loaded. The only native library in use is, I think, the OSHI library. Any ideas why this might be happening? Many greetings, Stefan -- == Gaz.AI ==
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