NAME

       passenger-memory-stats - reports a snapshot of the Apache and Phusion Passenger memory statistcs

SYNOPSIS

       passenger-memory-stats

DESCRIPTION

       passenger-memory-stats  allows  you  to  easily  analyze  the  real memory usage of Phusion Passenger and
       Apache.

       Process inspection tools such as ps and top are useful, but they rarely show the  correct  memory  usage.
       The real memory usage is usually lower than what ps and top report.

       There  are many technical reasons why this is so, but an explanation is beyond the scope of this page. We
       refer the interested reader to operating systems literature about virtual memory and copy-on-write.

       When you run this tool the Private or private dirty RSS field shows the real memory usage of processes.

ENVIRONMENT VARIABLES

       HTTPD  The full filename to the Apache executable. By default, Passenger will attempt to  autodetect  the
              Apache  executable.  If autodetection fails for whatever reason, then Apache processes will not be
              shown in the memory statistics. In that case, you may manually specify the location to the  Apache
              executable using this environment variable.

SEE ALSO

       passenger-status(8), ps(1), top(1),

       User guide at https://www.phusionpassenger.com/documentation_and_support

AUTHOR

       Phusion Passenger is written by Phusion (http://www.phusion.nl)

       This  manual  page  was  written by Neil Wilson <neil@brightbox.co.uk> for the Ubuntu project (but may be
       used by others).