ps 1.9.1

• ps now builds correctly on Alpine Linux (3.19) on R 4.5.0.

ps 1.9.0

• ps_memory_full_info() now contains maxrss, the maximum resident set
  size for the calling process.

• New columns argument in ps(), to customize what data is returned
  (#138).

ps 1.8.1

• ps can now be installed again on unsupported platforms.

ps 1.8.0

• New ps_apps() function to list all running applications on macOS.

• New function ps_disk_io_counters() to query disk I/O counters
  (#145, @michaelwalshe).

• New ps_fs_info() to query information about the file system of one
  or more files or directories.

• New ps_wait() to start an interruptible wait on multiple processes,
  with a timeout (#166).

• ps_handle() now allowes a numeric (double) scalar as the pid, as long
  as its value is integer.

• ps_send_signal(), ps_suspend(), ps_resume(), ps_terminate(),
  ps_kill(), and ps_interrupt() can now operate on multiple processes,
  if passed a list of process handles.

• ps_kill() and ps_kill_tree() have a new grace argument.
  On Unix, if this argument is not zero, then ps_kill() first sends a
  TERM signal, and waits for the processes to quit gracefully, via
  ps_wait(). The processes that are still alive after the grace period
  are then killed with SIGKILL.

• ps_status() (and thus ps()) is now better at getting the correct
  status of processes on macOS. This usually requires calling the external
  ps tool. See ?ps_status() on how to opt out from the new
  behavior (#31).

ps 1.7.7

• ps_cpu_times() values are now correct on newer arm64 macOS.

ps 1.7.6

• ps_name() now does not fail in the rare case when ps_cmdline() returns an empty vector (#150).

• ps_system_cpu_times() now returns CPU times divided by the HZ as reported by CLK_TCK, in-line with other OS's and the per-process version. (#144, @michaelwalshe).

ps 1.7.5

No user visible changes.

ps 1.7.4

• ps::ps_get_cpu_affinity() now works for other processes on Linux, not only
  the calling process.

ps 1.7.3

• The output of ps_disk_usage(), ps_disk_partitions() and
  ps_shared_lib_users() now do not include a spurious stringsAsFactors
  column.

ps 1.7.2

• ps_system_memory()$percent now returns a number scaled between 0 and 100
  on Windows, rather than between 0 and 1 (#131, @francisbarton).