Oops, correction (sorry for spam) - these options aren't even used in the process in question. It's -Xmx2g, and nothing else.
On Sun, 27 Mar 2022 at 23:17, Stefan Reich < stefan.reich.maker.of....@googlemail.com> wrote: > Quick follow-up: The only GC-related command line options I use are > > -XX:MaxHeapFreeRatio=20 -XX:MinHeapFreeRatio=10 > -XX:+UseStringDeduplication > > On Sun, 27 Mar 2022 at 23:14, Stefan Reich < > stefan.reich.maker.of....@googlemail.com> wrote: > >> 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 == >> > > > -- > == Gaz.AI == > -- == Gaz.AI ==
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