Grow Your Unix Beard With Ruby

Slide 1

Slide 1 text

Grow Your Unix Beard With Ruby Jesse Storimer Wednesday, 10 October, 12

Slide 2

Slide 2 text

@jstorimer Wednesday, 10 October, 12

Slide 3

Slide 3 text

Wednesday, 10 October, 12

Slide 4

Slide 4 text

Wednesday, 10 October, 12

Slide 5

Slide 5 text

Unix Ruby Wednesday, 10 October, 12

Slide 6

Slide 6 text

Wednesday, 10 October, 12

Slide 7

Slide 7 text

http://tomayko.com/writings/unicorn-is-unix Wednesday, 10 October, 12

Slide 8

Slide 8 text

Wednesday, 10 October, 12

Slide 9

Slide 9 text

:o Wednesday, 10 October, 12

Slide 10

Slide 10 text

Wednesday, 10 October, 12

Slide 11

Slide 11 text

Rack HTTP server for fast clients and Unix Wednesday, 10 October, 12

Slide 12

Slide 12 text

Rack HTTP server for fast clients and Unix Wednesday, 10 October, 12

Slide 13

Slide 13 text

Pre-forking Wednesday, 10 October, 12

Slide 14

Slide 14 text

forking Wednesday, 10 October, 12

Slide 15

Slide 15 text

Wednesday, 10 October, 12

Slide 16

Slide 16 text

fork() creates a new process Wednesday, 10 October, 12

Slide 17

Slide 17 text

Wednesday, 10 October, 12

Slide 18

Slide 18 text

Wednesday, 10 October, 12

Slide 19

Slide 19 text

fork() returns twice Wednesday, 10 October, 12

Slide 20

Slide 20 text

Wednesday, 10 October, 12

Slide 21

Slide 21 text

Wednesday, 10 October, 12

Slide 22

Slide 22 text

Wednesday, 10 October, 12

Slide 23

Slide 23 text

Wednesday, 10 October, 12

Slide 24

Slide 24 text

Wednesday, 10 October, 12

Slide 25

Slide 25 text

Wednesday, 10 October, 12

Slide 26

Slide 26 text

Wednesday, 10 October, 12

Slide 27

Slide 27 text

Wednesday, 10 October, 12

Slide 28

Slide 28 text

fork() returns twice Wednesday, 10 October, 12

Slide 29

Slide 29 text

fork() returns twice once, but in two processes Wednesday, 10 October, 12

Slide 30

Slide 30 text

Wednesday, 10 October, 12

Slide 31

Slide 31 text

Wednesday, 10 October, 12

Slide 32

Slide 32 text

Wednesday, 10 October, 12

Slide 33

Slide 33 text

Wednesday, 10 October, 12

Slide 34

Slide 34 text

Wednesday, 10 October, 12

Slide 35

Slide 35 text

Wednesday, 10 October, 12

Slide 36

Slide 36 text

fork() creates an exact copy of the calling process Wednesday, 10 October, 12

Slide 37

Slide 37 text

@hits = Array(1..5) pid = Process.fork do @hits.delete_at(1) puts "Child hits: #@hits" end Process.wait(pid) puts "Parent hits: #@hits" Wednesday, 10 October, 12

Slide 38

Slide 38 text

$hits = Array(1..5) pid = Process.fork do $hits.delete_at(1) puts "Child hits: #{$hits}" end Process.wait(pid) puts "Parent hits: #{$hits}" Wednesday, 10 October, 12

Slide 39

Slide 39 text

Pre-forking Wednesday, 10 October, 12

Slide 40

Slide 40 text

Wednesday, 10 October, 12

Slide 41

Slide 41 text

Wednesday, 10 October, 12

Slide 42

Slide 42 text

Wednesday, 10 October, 12

Slide 43

Slide 43 text

def start open_listener_socket load_rack_app 2.times do fork { worker_loop } end end def worker_loop loop do connection = listener_socket.accept process_client(connection) end end Wednesday, 10 October, 12

Slide 44

Slide 44 text

Wednesday, 10 October, 12

Slide 45

Slide 45 text

Wednesday, 10 October, 12

Slide 46

Slide 46 text

copy on write: share memory until it’s modified Wednesday, 10 October, 12

Slide 47

Slide 47 text

CoW Friendly Rubies •MRI 2.0 •Ruby Enterprise Edition •MRI 1.9.3-p194-perf Wednesday, 10 October, 12

Slide 48

Slide 48 text

http://bit.ly/mri-perf Wednesday, 10 October, 12

Slide 49

Slide 49 text

Wednesday, 10 October, 12

Slide 50

Slide 50 text

accept() accept() Wednesday, 10 October, 12

Slide 51

Slide 51 text

Wednesday, 10 October, 12

Slide 52

Slide 52 text

fast, efficient booting robust connection handling Wednesday, 10 October, 12

Slide 53

Slide 53 text

worker heartbeats self-pipe trick Wednesday, 10 October, 12

Slide 54

Slide 54 text

replace an instance of itself without losing any connections Wednesday, 10 October, 12

Slide 55

Slide 55 text

Wednesday, 10 October, 12

Slide 56

Slide 56 text

exec() transforms the calling process into a new process Wednesday, 10 October, 12

Slide 57

Slide 57 text

Wednesday, 10 October, 12

Slide 58

Slide 58 text

Wednesday, 10 October, 12

Slide 59

Slide 59 text

Wednesday, 10 October, 12

Slide 60

Slide 60 text

Wednesday, 10 October, 12

Slide 61

Slide 61 text

Wednesday, 10 October, 12

Slide 62

Slide 62 text

def reexec fork do cmd = [$0] cmd << ARGV.dup ENV['LISTENERS'] = sockets.map(&:fileno) exec(*cmd) # exec("unicorn", "-c", "unicorn_config.rb") end end Wednesday, 10 October, 12

Slide 63

Slide 63 text

Wednesday, 10 October, 12

Slide 64

Slide 64 text

Old Master Worker Worker Wednesday, 10 October, 12

Slide 65

Slide 65 text

Old Master Worker Worker Worker Worker New Master Wednesday, 10 October, 12

Slide 66

Slide 66 text

Worker Worker New Master Wednesday, 10 October, 12

Slide 67

Slide 67 text

Wednesday, 10 October, 12

Slide 68

Slide 68 text

Wednesday, 10 October, 12

Slide 69

Slide 69 text

The original Unix beards Wednesday, 10 October, 12

Slide 70

Slide 70 text

“[..] the Unix beard is really an extension of the philosopher's beard, and the academic's beard.” Wednesday, 10 October, 12

Slide 71

Slide 71 text

Wednesday, 10 October, 12

Slide 72

Slide 72 text

Wednesday, 10 October, 12

Slide 73

Slide 73 text

Thanks! Tweet @jstorimer Email [email protected] Books http://workingwithcode.com Use MAGICRUBY to save $10 Wednesday, 10 October, 12

Slide 74

Slide 74 text

Refs •http://www.colourlovers.com/palette/1938182/coconut_lips_RC •http://www.colourlovers.com/palette/1111659/Ninja_Rainbow •http://www.flickr.com/photos/soyunterrorista/2658174628/sizes/l/in/photostream/ •http://www.colourlovers.com/palette/1936237/Keynote_2 •http://whiteboardunicorns.com/ •http://www.flickr.com/photos/amyvdh/6003141750/sizes/o/in/photostream/ •http://www.twoideas.org/2009/07/unix-beards/ •http://www.flickr.com/photos/69er/463302758/ Wednesday, 10 October, 12