On Sun, 22 Oct 2023 10:08:49 GMT, Thomas Stuefe <stu...@openjdk.org> wrote:
> Analysts and supporters often use /proc/xx/maps to make sense of the memory > footprint of a process. > > Interpreting the memory map correctly can help when used as a complement to > other tools (e.g. NMT). There even exist tools out there that attempt to > annotate the process memory map with JVM information. > > That, however, can be more accurately done from within the JVM, at least for > mappings originating from hotspot. After all, we can correlate the mapping > information in NMT with the VMA map. > > Example output (from a spring petstore run): > > [example_system_map.txt](https://github.com/openjdk/jdk/files/13179054/example_system_map.txt) > > This patch adds the VM annotations for VMAs that are *mmaped*. I also have an > experimental patch that works with malloc'ed memory, but it is not ready yet > for consumption and I leave that part of for now. This pull request has now been integrated. Changeset: 6f863b2a Author: Thomas Stuefe <stu...@openjdk.org> URL: https://git.openjdk.org/jdk/commit/6f863b2a1baa67deb2a7b33fcd93d272aea01812 Stats: 793 lines in 9 files changed: 792 ins; 1 del; 0 mod 8318636: Add jcmd to print annotated process memory map Reviewed-by: jsjolen, gziemski ------------- PR: https://git.openjdk.org/jdk/pull/16301
