passenger-memory-stats(8) - phpMan

passenger-memory-stats(8)            Administration Commands            passenger-memory-stats(8)

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  Pas-
       senger 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 vari-
              able.

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 AT brightbox.uk> for the Ubuntu project
       (but may be used by others).

Phusion Passenger                              2.0                      passenger-memory-stats(8)

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