Class: UnicornWrangler::RssReader

Inherits:

Object

• Object
• UnicornWrangler::RssReader

Defined in:

lib/unicorn_wrangler/rss_reader.rb

Constant Summary

LINUX =

RbConfig::CONFIG['host_os'].start_with?('linux')

PS_CMD =

'ps -o rss= -p %d'.freeze

VM_RSS =

/^VmRSS:\s+(\d+)\s+(\w+)/

UNITS =

{
  b:  1024**0,
  kb: 1024**1,
  mb: 1024**2,
  gb: 1024**3,
  tb: 1024**4,
}.freeze

Instance Method Summary

• #initialize(logger:) ⇒ RssReader constructor

  A new instance of RssReader.

• #rss(pid: Process.pid) ⇒ Object

  Returns RSS in megabytes; should work on Linux and Mac OS X.

Constructor Details

#initialize(logger:) ⇒ RssReader

Returns a new instance of RssReader.

# File 'lib/unicorn_wrangler/rss_reader.rb', line 16

def initialize(logger:)
  @logger = logger
end

Instance Method Details

#rss(pid: Process.pid) ⇒ Object

Returns RSS in megabytes; should work on Linux and Mac OS X

# File 'lib/unicorn_wrangler/rss_reader.rb', line 21

def rss(pid: Process.pid)
  LINUX ? rss_linux(pid) : rss_posix(pid)
end