On Linux, process memory information has been added to both JVM crash reports (`hs_err` files) and the `VM.info` diagnostic `jcmd`. This information contains the process' virtual size, its resident set size, and how much memory was swapped out. If the JVM uses `glibc`, the size of `glibc` outstanding allocations and retained memory are printed, as well as the (`glibc` tunables)[https://www.gnu.org/software/libc/manual/html_node/Memory-Allocation-Tunables.html].