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The future of Ruby is faster

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Avatar for Dirkjan Bussink Dirkjan Bussink
June 29, 2013
Technology
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550

The future of Ruby is faster

Talk given at Euruko 2013

Avatar for Dirkjan Bussink

Dirkjan Bussink

June 29, 2013
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Transcript

  1. The future of Ruby is faster Euruko 2013 Saturday, June

    29, 13

  2. Dirkjan Bussink @dbussink Saturday, June 29, 13

  3. Rubinius Use Ruby Saturday, June 29, 13

  4. Saturday, June 29, 13

  5. Saturday, June 29, 13

  6. “Everything you heard about Ruby being slow is not true.

    It’s about twice as slow as that” Saturday, June 29, 13

  7. Saturday, June 29, 13

  8. The lure of the hash table Saturday, June 29, 13

  9. class MethodTable def initialize @methods = {} end def store_method(name,

    code) @methods[name] = code end def find_method(name) @methods[name] end end Saturday, June 29, 13

  10. class Address def initialize @instance_variables[:street] = "Pantheon" @instance_variables[:number] = 1

    @instance_variables[:city] = "Athens" end end Saturday, June 29, 13

  11. Hash tables everywhere! Saturday, June 29, 13

  12. Inline caching Saturday, June 29, 13

  13. p = Person.new p.name Saturday, June 29, 13

  14. p = Person.new p.name <receiver_class_id, code> Saturday, June 29, 13

  15. “There are 2 hard problems in computer science: caching, naming,

    and off-by-1 errors” Saturday, June 29, 13

  16. Global serial number Saturday, June 29, 13

  17. http://jamesgolick.com/2013/4/14/mris-method-caches.html https://charlie.bz/blog/things-that-clear-rubys-method-cache Saturday, June 29, 13

  18. Per class serial number Saturday, June 29, 13

  19. Probably in 2.1 Saturday, June 29, 13

  20. Instance variable packing Saturday, June 29, 13

  21. class Address def initialize @street = "Pantheon" @number = 1

    @city = "Athens" end end Address.instance_variable_get("@seen_ivars") => [:@street, :@number, :@city] Saturday, June 29, 13

  22. 0001: push_ivar :@number self[1] Removes hash table lookup Saturday, June

    29, 13

  23. Just in time compilation Saturday, June 29, 13

  24. def method1 1 + method2 end def method2 2 +

    1 end 100000.times do method1 end Saturday, June 29, 13

  25. def method1 1 + method2 end def method2 2 +

    1 end 100000.times do method1 end ... 0x110ed90e7 mov $0x9, %eax 0x110ed90ec jmp 0x119 ; 0x110ed9129 ... 0x110ed9129 addq $0xa0, %rsp 0x110ed9130 pop %rbp 0x110ed9131 ret Saturday, June 29, 13

  26. def method1 1 + method2 end def method2 2 +

    1 end 100000.times do method1 end ... 0x110ed90e7 mov $0x9, %eax 0x110ed90ec jmp 0x119 ; 0x110ed9129 ... 0x110ed9129 addq $0xa0, %rsp 0x110ed9130 pop %rbp 0x110ed9131 ret b0100 (4) b1000 (8) b1001 (9) Saturday, June 29, 13

  27. def method1 1 + method2 end def method2 2 +

    1 end 100000.times do method1 end ... 0x110ed90e7 mov $0x9, %eax 0x110ed90ec jmp 0x119 ; 0x110ed9129 ... 0x110ed9129 addq $0xa0, %rsp 0x110ed9130 pop %rbp 0x110ed9131 ret b0100 (4) b1000 (8) b1001 (9) Saturday, June 29, 13

  28. Saturday, June 29, 13

  29. Creating less garbage Saturday, June 29, 13

  30. a = Address.new a.street = "Pantheon" a.number = "1" a.city

    = "Athens" Rubinius.memory_size(a) => 56 VS Rubinius.memory_size(a) => 160 Saturday, June 29, 13

  31. Saturday, June 29, 13

  32. 2.1 Saturday, June 29, 13

  33. Auto tuning Saturday, June 29, 13

  34. Parallelism Saturday, June 29, 13

  35. Higher throughput Saturday, June 29, 13

  36. Concurrency Saturday, June 29, 13

  37. Shorter stop the world Saturday, June 29, 13

  38. thread 1 thread 2 thread 3 Saturday, June 29, 13

  39. thread 1 thread 2 thread 3 GC thread Saturday, June

    29, 13

  40. thread 1 thread 2 thread 3 GC thread Long GC

    pauses be gone! Saturday, June 29, 13

  41. http://rubini.us/2013/06/22/concurrent-garbage-collection/ Saturday, June 29, 13

  42. How much does it help? Saturday, June 29, 13

  43. Before Saturday, June 29, 13

  44. Lifting the server siege... done. Transactions: 501 hits Response time:

    0.02 secs Transaction rate: 51.70 trans/sec Throughput: 1.46 MB/sec Concurrency: 1.00 Longest transaction: 0.15 Shortest transaction: 0.01 Saturday, June 29, 13

  45. Lifting the server siege... done. Transactions: 501 hits Response time:

    0.02 secs Transaction rate: 51.70 trans/sec Throughput: 1.46 MB/sec Concurrency: 1.00 Longest transaction: 0.15 Shortest transaction: 0.01 Sad long wait time :( Saturday, June 29, 13

  46. Lifting the server siege... done. Transactions: 1032 hits Response time:

    0.04 secs Transaction rate: 102.79 trans/sec Throughput: 2.91 MB/sec Concurrency: 4.00 Longest transaction: 0.28 Shortest transaction: 0.02 Saturday, June 29, 13

  47. Lifting the server siege... done. Transactions: 1032 hits Response time:

    0.04 secs Transaction rate: 102.79 trans/sec Throughput: 2.91 MB/sec Concurrency: 4.00 Longest transaction: 0.28 Shortest transaction: 0.02 Not so good concurrency Saturday, June 29, 13

  48. After Saturday, June 29, 13

  49. Lifting the server siege... done. Transactions: 599 hits Response time:

    0.02 secs Transaction rate: 61.06 trans/sec Throughput: 1.73 MB/sec Concurrency: 1.00 Longest transaction: 0.03 Shortest transaction: 0.01 Saturday, June 29, 13

  50. Lifting the server siege... done. Transactions: 599 hits Response time:

    0.02 secs Transaction rate: 61.06 trans/sec Throughput: 1.73 MB/sec Concurrency: 1.00 Longest transaction: 0.03 Shortest transaction: 0.01 No more long pause! Saturday, June 29, 13

  51. Lifting the server siege... done. Transactions: 1374 hits Response time:

    0.02 secs Transaction rate: 176.38 trans/sec Throughput: 5.00 MB/sec Concurrency: 3.99 Longest transaction: 0.04 Shortest transaction: 0.01 Saturday, June 29, 13

  52. Lifting the server siege... done. Transactions: 1374 hits Response time:

    0.02 secs Transaction rate: 176.38 trans/sec Throughput: 5.00 MB/sec Concurrency: 3.99 Longest transaction: 0.04 Shortest transaction: 0.01 More req/s! Saturday, June 29, 13

  53. 1 client: 51 => 61 req/s 4 clients: 102 =>

    176 req/s Saturday, June 29, 13

  54. Concurrency & parallelism Saturday, June 29, 13

  55. No GIL/GVL! Saturday, June 29, 13

  56. Future is multi-core Saturday, June 29, 13

  57. We need new API’s Saturday, June 29, 13

  58. Parallel each Saturday, June 29, 13

  59. Thread safe collections Saturday, June 29, 13

  60. What about you as a developer? Saturday, June 29, 13

  61. Be nice Saturday, June 29, 13

  62. Write type stable code Saturday, June 29, 13

  63. Small and simple methods Saturday, June 29, 13

  64. Benchmark! Saturday, June 29, 13

  65. ? Saturday, June 29, 13