Class: Insight::MemoryPanel

Inherits:

Panel

• Object
• Panel
• Insight::MemoryPanel

show all

Defined in:

lib/insight/panels/memory_panel.rb

Instance Attribute Summary

Attributes inherited from Panel

#request

Instance Method Summary (collapse)

• - (Object) after(env, status, headers, body)
• - (Object) before(env)
• - (Boolean) has_content?
• - (Object) heading_for_request(number)
• - (MemoryPanel) initialize(app) constructor

  A new instance of MemoryPanel.

• - (Object) name

Methods inherited from Panel

#call, #content_for_request, current_panel_file, excluded, file_index, from_file, inherited, #panel_app, panel_exclusion, panel_mappings, #render

Methods included from Instrumentation::Client

#after_detect, #before_detect, #probe, #request_finish, #request_start

Methods included from Logging

logger

Methods included from Database::RequestDataClient

#key_sql_template, #retrieve, #store, #table_length, #table_setup

Methods included from Render

#compile, #compile!, #compiled_source, #method_name, #method_name_without_locals, #render_template, #signed_params

4
5
6
7

# File 'lib/insight/panels/memory_panel.rb', line 4

def initialize(app)
  super
  table_setup("memory_records")
end

13
14
15
16
17
18

# File 'lib/insight/panels/memory_panel.rb', line 13

def after(env, status, headers, body)
  total_memory = `ps -o rss= -p #{$$}`.to_i
  store(env, {:total_memory => total_memory,
        :memory_increase => total_memory - @original_memory,
        :original_memory => @original_memory})
end

9
10
11

# File 'lib/insight/panels/memory_panel.rb', line 9

def before(env)
  @original_memory = `ps -o rss= -p #{$$}`.to_i
end

26
27
28

# File 'lib/insight/panels/memory_panel.rb', line 26

def has_content?
  false
end

20
21
22
23
24

# File 'lib/insight/panels/memory_panel.rb', line 20

def heading_for_request(number)
  record = retrieve(number).first

  "#{record[:memory_increase]} KB Δ, #{record[:total_memory]} KB total"
end

30
31
32

# File 'lib/insight/panels/memory_panel.rb', line 30

def name
  "Memory"
end