Ruby应用性能调优实践

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Rubyଫአ௔ᚆ᧣սਫ᪢ ๫߽ - OneAPM 2015.10.10

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ञ຾ฎՋԍҘ

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ञ: ݰԧ੪೉ ຾: ݰԧ੪ݺ

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֦మݰᗤᶟҘ ඓԀ୏ஞހҘ ౯݄ԧ୊ᬟѺ

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ڹݶԪ { ڹݶԪ }

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ӳ۹Ոࣁଠ૞

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಍ৼ֯Ո

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۹Ղཛྷୗ୏ސ …

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ํᅩᔲୟ …

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౯ժฎଗՋԍጱ? • OneAPM • ௔ᚆፊഴଘݣ • 2015ଙڡਠ౮C᫪ᣟᩒ • 350Ո • ᬪ200ՈฎᎸݎ • قࢵԆᥝITउ૱᮷ํړلݪ౲ېԪ॒

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౯ฎ᧡Ҙ • ๫߽ • Java 2007 ~ 2010 • Ruby 2011 ~ Now • ፓڹ੪ᘳOneAPM - RubyAgent, Cloud Insight • github.com/markgeek • douban.com/people/markgeek/

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౯ժ๶ᘱᘱRails ౌ ᬯկԪ

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౲ᘏฎRack ౌ ᬯկԪ

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ٌਫฎRuby ౌ ᬯկԪ

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֦ᦊԅRubyౌހҘ ౌጱᤒሿฎՋԍҘ ፥ጱฎ᧍᥺๜᫝᭜౮ጱހҘ ᦶ፳አૡٍ༄ၥᬦހҘ

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30%զӤጱౌฎ՗ຝ຅Ӥ᧣սጱ

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– ӧᎣ᭲ฎ᧡᧔ጱ “ᑕଧާ᮷ฎࡅෛܵ෯ጱਹվ̶”

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ӞӻRubyଫአ • 2000ଚݎ • क़᮱ߥଫ෸ᳵ300ms • ଫአߥଫ෸ᳵ < 150ms • 4ݣԆ๢ / 8core,8G • nginx, goliath, grape, redis

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፡፡RubyጱचᏐܲݥ

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RubyVMጱݎ઀ܲݥ • 1.9 Koichi Sasada : YARV • 1.9 Narihiro Nakamura ғLazySweep • 2.0 Narihiro Nakamura ғBitmap Marking GC • 2.1 Koichi Sasada ғGenerational Collector • 2.2 Koichi Sasada ғIncremental Generational Collector

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http://tmm1.net/ruby21-rgengc

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Rubyጱᬩᤈ᭛ଶӞፗࣁ൉܋

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ӞԶच๜༷ஷ • Benchmark • Proﬁling • Tracing • Debugging

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Benchmarkғ᪒ړ

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benchmark, benchmark-ips

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Proﬁlingғᦕ୯ᬩᤈ෸מ௳

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RubyProf,StackProf

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Tracingғᦕ୯ොဩ᧣አמ௳

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rbtrace,allocation_tracer

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Ӟӻੜጱbenchmark

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Ruby Performance

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1.98 / 1.14 = 1.7368…

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RubyProf • flat - Prints a flat profile as text (default). • dot - Prints a graph profile as a dot file • call_stack - prints a HTML visualization of the call tree • call_tree - format for KCacheGrind

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StackProf • CPUཛྷୗ • ੒᨝ړᯈཛྷୗ • middlewareཛྷୗ

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rbtrace • rbtrace -p —ﬁrehose • rbtrace -p —slow= • rbtrace -p --methods "Kernel#sleep" “Proc#call" • rbtrace -p --gc

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Ꮯਧኒ᷀ԏݸ • fast-ruby • fasterer

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Ӟӻਫᴬጱֺৼ

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ݚक़ጱӞԶૡٍ

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http://rbkit.codemancers.com/

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https://github.com/peek/peek-rblineprof

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https://github.com/MiniProﬁler/rack-mini-proﬁler

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ইຎ֦੒ବ੶உఽي᪁ Dtrace / SystemTap

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ݳᭇጱૡٍ؉ݳᭇጱૡ֢

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Rubyਖ਼տᬩᤈጱๅள

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– Yukihiro 'Matz' Matsumoto “Super Dry Ruby”

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https://www.youtube.com/watch?v=bqWBB8-iEac&list=PLE7tQUdRKcyZdMYKatu_nics8Pkjxl3-F

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ই֜೮ᖅጱፊഴଫአ ጱ௔ᚆᳯ᷌

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Application Performance Monitor or Application Performance Management

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ӧՐՐฎᬯԶ

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୏რᩒრ • https://github.com/JuanitoFatas/fast-ruby • https://github.com/DamirSvrtan/fasterer • https://github.com/schneems/derailed_benchmarks • https://github.com/change/method_proﬁler • https://github.com/schneems/heapy • https://github.com/peek/peek-rblineprof • https://github.com/tmm1/rblineprof

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݇ᘍᩒා1 • https://engineering.heroku.com/blogs/2015-02-04-incremental-gc/ • http://tmm1.net/ruby21-rgengc/ • https://www.youtube.com/watch?v=nRehkd22j78&spfreload=10 • https://avsej.net/2012/systemtap-and-ruby-20/ • https://www.shopify.com/technology/16777156-tuning-rubys-global-method-cache • https://www.youtube.com/watch?v=pZ_BcEcFGj0 • http://www.atdot.net/~ko1/activities/2015_railsconf.pdf • http://samsaffron.com/archive/2013/11/22/demystifying-the-ruby-gc

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݇ᘍᩒා2 • http://www.theirishpenguin.com/2009/10/29/understanding-how-ruby-stores- objects-in-memory-the-ruby-heap.html • http://samsaffron.com/archive/2013/11/22/demystifying-the-ruby-gc • http://thorstenball.com/blog/2014/03/12/watching-understanding-ruby-2.1- garbage-collector/