Date: Tue, 20 Feb 2018 21:31:22 +0000 From: Marcin Cieslak <saper@saper.info> To: =?ISO-8859-15?Q?Karli_Sj=F6berg?= <karli@inparadise.se> Cc: ports@freebsd.org, ruby@freeebsd.org Subject: Re: monitoring ruby app memory usage with passenger-recycler (was: Cannot require library for passenger in ruby) Message-ID: <nycvar.OFS.7.76.6.1802202034350.2659@z.fncre.vasb>
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--1563967779-917225932-1519162282=:2659 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 8BIT On Mon, 19 Feb 2018, Karli Sjöberg wrote: > > What is the tool you are trying to deploy? foreman_maintain? Sorry, I was too quick. This foreman_main is used to download/update foreman from RedHat Satellite servers, which is not what you want. However, the passenger-recycler script is a standalone script which could possibly used with this little fix: https://github.com/theforeman/foreman_maintain/pull/143 To apply this, please add files/patch-bin_passenger-recycler in the port I've sent before: --- bin/passenger-recycler.orig 2018-02-20 21:09:18 UTC +++ bin/passenger-recycler @@ -41,10 +41,10 @@ def process_status?(pid) end require 'phusion_passenger' +PhusionPassenger.locate_directories require 'phusion_passenger/platform_info' require 'phusion_passenger/platform_info/ruby' require 'phusion_passenger/admin_tools/memory_stats' -PhusionPassenger.locate_directories stats = PhusionPassenger::AdminTools::MemoryStats.new unless stats.platform_provides_private_dirty_rss_information? puts 'Please run as root or platform unsupported' But the real problem is that Passenger does think it supports getting process private dirty RSS memory information only on Linux: https://github.com/phusion/passenger/blob/219ad24159ae4033a342e6ad753cfee05d98bae0/src/ruby_supportlib/phusion_passenger/admin_tools/memory_stats.rb#L121 In file src/ruby_supportlib/phusion_passenger/admin_tools/memory_stats.rb: 120 def platform_provides_private_dirty_rss_information? 121 return os_name_simple == "linux" 122 end This support probably would need to be written. So, unfortunately, passenger-recycler as written will exit with: Please run as root or platform unsupported But passenger-recycler does something very simple - if the amount of "private resident RSS memory" is higher than specified amount in the configuration file, it kills the process. You might get a much better monitoring on FreeBSD by monitoring the output of procstat -v <processid> which will give you details about the memory usage of the process and see how it is growing over time. Maybe you can pinpoint the shared library that causes this, if you are lucky. 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