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俺の話を聞け！！LT大会 #8でトークした資料です

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1. ʙय़ͩʂՖคͩʂ-5େձͩ͊͊͊͋͋͋͋ʂʂʂ̍ʙ !QZBNB
   
   (.0
   1FQBCP
   *OD
   Զͷ࿩Λฉ͚ʂʂ-5େձ
    -JOVYίϚϯυͰϘτϧωοΫ Λௐ΂Δ
2. ϗεςΟϯάࣄۀ෦
   νʔϑςΫχΧϧϦʔυ
   ࢁԼ
   ࿨඙
   
   !QZBNB
3. ϖύϘ෱Ԭ
4. αʔόαΠυɺϑϩϯτΤϯυɺ
   ΠϯϑϥΤϯδχΞશһདྷͯ͘Εʂʂʂʂ̍ ࠷৽ͷ࠾༻৘ใΛνΣοΫˠ !QC@SFDSVJU
5. Ϙτϧωο Ϋௐࠪ
6. ʮͳΜ͔Θ͔ΒΜ͚Ͳɺ
   Կ͔͕஗ͯ͘
   ॲཧ͕ॏ͍ʯ
7. ಄ѱͦ͏
8. ύϑΥʔϚϯεղੳʹ͸
   ͍͔ͭ͘ͷखஈ͕͋Δ
9. ͳΜ͔͍͍ͩͨͲͷձࣾʹ΋͍Δ͍͢͝ਓʹฉ͘ w͍͢͝ਓʹฉ͘ͱɺ͍͍ͩͨղܾͯ͘͠ΕΔ
   w͍͢͝ਓ͸͍͢͝ͷͰɺͦͷ৔ͰΘ͔Βͳͯ͘΋ɺ͍͍ͩͨ࣍ͷ೔ʹ
 ʮࡢ೔ͷ͋ΕΘ͔ͬͨΑʂʂʂʯͱ͔ௐ΂͖ͯͯ͘ΕΔ
   w͍͢͝ਓʹฉ͘ͱɺ͍͢͝ਓ͕ؤுΔ͚ͩͰɺࣗ෼͕ؤுΒͳ͍͔Β ࣗ෼͕੒௕͠ͳ͍
10. ϓϩϑΝΠϦϯά wIUUQTHJUIVCDPNUNNTUBDLQSPG ݴޠ໊
    ϓϩϑΝΠϥ
    <ݕࡧ>
11. -JOVYͷίϚϯυͰௐ΂Δ wHEC
    
    5IF
    (/6
    %FCVHHFS
    wTUSBDF
    
    5SBDF
    TZTUFN
    DBMMT
    BOE
    TJHOBMT
    wQFSG
    
    1FSGPSNBODF
    BOBMZTJT
    UPPMT
    GPS
    -JOVY
    wWBMHSJOE
    
    B
    TVJUF
    PG
    UPPMT
    GPS
    EFCVHHJOH
    BOE
    QSPpMJOH
    QSPHSBNT
12. ࣄྫ
13. NSVCZͷ"1*ΞΫηε͕཯଎ NSVCZ
    DMJFOU "1*
    4FSWFS SFTPVSDFFYBNQMF NSVCZͷ$MJFOU͔Β͋Δ"1*Λ࣮ߦͯ͠
    .#ͷϨεϙϯεΛऔಘ͢Δ৔߹ +40/
14. ࣄྫ ॠؒతʹ(CZUF͘Β͍
    ϝϞϦ࢖͏
15. WBMHSJOEͰϝϞϦͷΞϩέʔγϣϯΛݟΔ # valgrind curl http://localhost/resource/example > /dev/null … ==18619== HEAP SUMMARY: ==18619== in use at exit: 0 bytes in 0 blocks ==18619== total heap usage: 1,863 allocs, 1,863 frees, 211,125 bytes allocated # valgrind /home/pyama/mruby test.rb … ==12811== HEAP SUMMARY: ==12811== in use at exit: 0 bytes in 0 blocks ==12811== total heap usage: 51,721 allocs, 51,721 frees, 12,028,345,116 bytes allocated
16. ʗ ?P? ʘ(
17. TUSBDFͰγεςϜίʔϧͷ౷ܭΛऔΔ # strace -fc /home/pyama/mruby test.rb % time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 73.00 0.006317 2 3361 munmap 23.27 0.002014 11 183 brk 2.62 0.000227 0 1734 read 1.11 0.000096 0 3380 mmap 0.00 0.000000 0 3 write 0.00 0.000000 0 16 open 0.00 0.000000 0 23 close NVONBQ͕ࢧ഑త IUUQTMJOVYKNPTEOKQIUNM-%1@NBOQBHFTNBONNBQIUNM
18. QFSGΛར༻ͯ͠ίʔϧάϥϑΛऔಘ͢Δ IUUQNSVCZPSHEPDTBQJIFBEFSTNSVCZ@'TUSJOHIIUNMNSC@TUS@QMVTGVODUJPO # perf record --call-graph dwarf -- /home/pyama/mruby test.rb # perf report -g -G —stdio 94.35% 0.03% mruby mruby [.] mrb_str_plus | ---mrb_str_plus | --20.06%-- mrb_vm_exec mrb_vm_run … NSC@TUS@QMVT͕ࢧ഑త
19. ৘ใ͔ΒԾઆΛཱͯΔ wॲཧ͸)551ϦΫΤετͰϨεϙϯεϘσΟ͸αΠζ͕େ͖͍
    wϝϞϦ(#࢖ͬͯΔΦϫλ
    wNVONBQ͕ࢧ഑తͰճ਺΋ଟ͍͜ͱ͔ΒɺϝϞϦͷ֬อɺղ์͕ଟ ͍ͷͰ͸ͳ͍͔ʁ
    wNSC@TUS@QMVT͕ࢧ഑తͰ͋Δ͜ͱ͔Βɺจࣈྻ݁߹͕ଟ͍͜ͱ͕ݪ ҼͬΆ͍ͳʁ NSC@TUS@QMVT
    
    SVCZ
    F
    bD
    
    lBz
    
    lCz`
20. ΧΫΧΫ γΧδΧ
21. ݪҼ͸)551ϦΫΤετͷόοϑΝαΠζ IUUQTHJUIVCDPNNBUTVNPUPSZNSVCZTJNQMFIUUQQVMM NSVCZ
    DMJFOU "1*
    4FSWFS SFTPVSDFFYBNQMF +40/ ιέοτ͔Β+40/Λड͚औΔࡍͷόοϑΝαΠζ͕CZUFͰ͋ͬͨ͜ͱ͔Βɺ
    ಡࠐͷϧʔϓճ਺͕ଟ͘ͳ͍ͬͯͨɻόοϑΝͷαΠζΛCZUF΁มߋ͢Δ͜ͱͰ
    ݁Ռͱͯ͠ϧʔϓճ਺ΛݮΒͯ͠จࣈྻ݁߹ͷճ਺ΛݮΒͨ͠      
22. NSVCZTJNQMFIUUQ while (t = socket.read(1024)) if block_given? yield t next end ɹ #όοϑΝ͕গͳ͍ͱϧʔϓճ਺͕૿͑ͯɺ݁߹ճ਺͕૿͑ͯແବʹϝϞϦ֬อ response_text += t end ͔͠΋ɺ($͕૸Δ·Ͱ͸։์͞Εͳ͍
23. ΋͏Ұา ౿ΈࠐΉ
24. NSC@TUS@QMVT NSVCZͰ͸จࣈྻ݁߹ͷࡍʹ݁߹݁Ռจࣈྻͷ
    ϝϞϦΛ֬อ͢Δ
25. NSVCZTJNQMFIUUQ while (t = socket.read(1024)) if block_given? yield t next end response_text << t end ͞ΒʹDPODBUʹ͢Δ͜ͱͰɺແବͳྖҬ֬อΛ΍ΊΔ
26. NSC@TUS@QMVT
    74
    NSC@TUS@DBU TUSJOH
    lBCz TUSJOH
    lBz TUSJOH
    lCz TUSJOH
    lBz TUSJOH
    lCz  TUSJOH
    lBz TUSJOH
    lCz  TUSJOH
    lBCz 
27. IUUQTUFOTOBQPODPNBSDIJWFT
28. ·ͱΊ wϓϩϑΝΠϥ΍ίϚϯυΛར༻ͯ͠৘ใΛूΊΑ͏
    wूΊͨ৘ใ͔ΒԾઆΛཱͯΑ͏
    wԾઆΛݕূ͠Α͏
    wσόοάίʔυͰ͋Ε͜Εࢼ͢
    wਂ͘ίʔυΛಡΉɺ࣮૷ʹഭΔ
29. 5IBOLZPV ࠷৽ͷ࠾༻৘ใΛνΣοΫˠ !QC@SFDSVJU