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Deconstructing Performance
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Denys Mishunov
April 10, 2017
Technology
4
760
Deconstructing Performance
As presented at Smashing Conference, San Francisco 2017
Denys Mishunov
April 10, 2017
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Transcript
Deconstructing DENYS MISHUNOV • DIGITAL GARDEN AS • @mishunov
PTDBSHPDPN ,FWJO8JOUFS(FUUZ*NBHFT ,FWJO8JOUFS(FUUZ*NBHFT ,FWJO8JOUFS(FUUZ*NBHFT
HPPHMSUD6)
None
2003 2005 2007 2009 2011 2013 2015 "7&3"(&#:5&4 1&31"(& 93,7
kB 2569 kB IUUQHPPHMRKNVN
-0"%*/(5*.& &70-65*0/ 1999 2006 2012 2017 IUUQHPPHMRKNVN 8 s 4
s 2 s 1 s 2569 kB
T DPOWFSTJPὝ T SFWFOVF
.0#*-&53"/4"$5*0/4 4637&: Harris Interactive for Tealeaf, 2011
$634&% BUUIFJSEFWJDF #*@%! .0#*-&53"/4"$5*0/4 4637&:
4$3&".&% BUUIFJSEFWJDF .0#*-&53"/4"$5*0/4 4637&:
5)3&8 UIFJSEFWJDF .0#*-&53"/4"$5*0/4 4637&:
1&01-& )"5& 8"*5*/(
IUUQTHPPHMDE2$& NJMMJPOT 8.143s 14.200s > 15.013s
1&3'3."/$& JTOPU ."5)&."5*$4
1&3'3."/$& JT 1&3$&15*0/
None
14:$)0-0(*$"- 1&3'03."/$& 015*.*4"5*0/
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+/% KVTUOPUJDFBCMFEJ⒎FSFODF 8&#&3'&$)/&3-"8
36-& &7&/5
.&"/*/('6- /05*$&"#-& !==
OPTION 1 OPTION 2 1FSGPSNBODF ."55&34 SMASHING CONFERENCE BCTPMVUFOVNCFSTEPO`U OPTION
3 1FSGPSNBODF ."55&34 SMASHING CONFERENCE BCTPMVUFOVNCFSTEPO`U 1FSGPSNBODF ."55&34 SMASHING CONFERENCE BCTPMVUFOVNCFSTEPO`U
OPTION 1 OPTION 2 1FSGPSNBODF ."55&34 SMASHING CONFERENCE BCTPMVUFOVNCFSTEPO`U OPTION
3 1FSGPSNBODF ."55&34 SMASHING CONFERENCE BCTPMVUFOVNCFSTEPO`U 1FSGPSNBODF ."55&34 SMASHING CONFERENCE BCTPMVUFOVNCFSTEPO`U і і і
None
36-&
&7&/5 REGRESSION ALLOWANCE 36-&
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None
5*.&QFSTJTUTNFSFMZBTB DPOTFRVFODFPGUIF&7&/54 UBLJOHQMBDFJO<TQBDF> Martin Heidegger t u
1"44*7& "$5*7&
1"44*7& "$5*7&
1"44*7& "$5*7&
14:$)0-0(*$"-1&3'03."/$&015*.*4"5*0/ PASSIVE ACTIVE
1"44*7& 1)"4&
1"44*7& 1)"4&
"$5*7& 1)"4& 7JEFPTPVSDFIUUQSFZLKBWJLTJHIUTFFJOHJT
015*.*45*$6*
1-3% 97-99% 4 6 $ $ & 4 4 '
" * - 6 3 &
$-*$,.& 015*.*45*$6*
✔ 015*.*45*$6*
"1* ✔ 015*.*45*$6*
"1* ✔ error 0).:ʜ 015*.*45*$6*
015*.*45*$6*
015*.*45*$6*
015*.*45*$6*
MJOLSFMlʜISFGlʜ IUUQTXXXXPSH538%SFTPVSDFIJOUT 3&4063$&)*/54
SFMlEOTQSFGFUDIz SFMlQSFDPOOFDUz SFMlQSFGFUDIz SFMlQSFSFOEFSz SFMlQSFMPBEzBTlUZQFz IUUQHPPHM,LR+%
SFMlEOTQSFGFUDIz SFMlQSFDPOOFDUz SFMlQSFGFUDIz SFMlQSFSFOEFSz SFMlQSFMPBEzBTlUZQFz IUUQHPPHM,LR+%
HPPHMRKNVN
$3*5*$"-1"5)
$3*5*$"-1"5) $0/5&/5 +4 +4 *.( )5.- $44 $44 +4 +4
*.( *.(
$3*5*$"-1"5) $0/5&/5 +4 +4 *.( )5.- $44 $44 *.( *.(
+4
14:$)0-0(*$"-1&3'03."/$&015*.*4"5*0/ PASSIVE ACTIVE
HPPHM[G$-IT
None
None
None
… a couple of hours SURE! ,FWJO8JOUFS(FUUZ*NBHFT
LA LA WEB The Performance Experiment
LA LA WEB The Performance Experiment DISCLAIMER: This experiment contains
copyrighted material. The material is provided for non- profit educational purposes, comments, criticismsm and research. This should constitute a “fair use” of any such copyrighted material as provided for in §107 of the U.S. Copyright Act.
None
A COUPLE OF HOURS (REALLY) (REALLY) NO CHANGES TO FUNCTIONALITY
CONSTRAINTS PRIORITISE PERCEPTION
PASSIVE
PASSIVE
PASSIVE ACTIVE
WAITS FOR ALL ASSETS/SECTIONS REASONS
WAITS FOR ALL ASSETS/SECTIONS
SOLUTION
CRITICAL RENDERING PATH OPTIMISATION SOLUTION
CRITICAL
LA LA LAND HTML CSS IMAGES FONTS
LA LA LAND HTML
LA LA LAND HTML…………………MINIFIED
LA LA LAND CSS CSS HTML…………………MINIFIED
LA LA LAND MAIN CSS HTML…………………MINIFIED CSS………INLINE CRITICAL
LA LA LAND FONTS MAIN CSS HTML…………………MINIFIED CSS………INLINE CRITICAL
LA LA LAND MAIN CSS 6 FONTS FONTS………….3 (PRELOAD) HTML…………………MINIFIED
CSS………INLINE CRITICAL
LA LA LAND MAIN CSS 6 FONTS IMAGES FONTS………….3 (PRELOAD)
HTML…………………MINIFIED CSS………INLINE CRITICAL
LA LA LAND MAIN CSS 6 FONTS IMAGES…………OPTIMISED FONTS………….3 (PRELOAD)
HTML…………………MINIFIED CSS………INLINE CRITICAL
LA LA LAND MAIN CSS 6 FONTS IMAGES…………OPTIMISED + RESOURCE
HINTS FONTS………….3 (PRELOAD) HTML…………………MINIFIED CSS………INLINE CRITICAL
LA LA LAND MAIN CSS 6 FONTS IMAGES…………OPTIMISED + RESOURCE
HINTS CACHING FONTS………….3 (PRELOAD) HTML…………………MINIFIED CSS………INLINE CRITICAL
LA LA LAND JS MAIN CSS 6 FONTS + RESOURCE
HINTS CACHING IMAGES…………OPTIMISED FONTS………….3 (PRELOAD) HTML…………………MINIFIED CSS………INLINE CRITICAL
LA LA LAND JS MAIN CSS 6 FONTS <script async
defer src=“defered.js"> </script>
LA LA LAND JS MAIN CSS 6 FONTS <script async
defer src=“defered.js"> </script> + PREFETCH + PREFETCH
LA LA LAND JS MAIN CSS 6 FONTS <script async
defer src=“defered.js"> </script> + PREFETCH + PREFETCH + PRELOAD + PRELOAD
+ RESOURCE HINTS CACHING IMAGES…………OPTIMISED FONTS………….3 (PRELOAD) HTML…………………MINIFIED CSS………INLINE CRITICAL
+ DEFER & DELAY EVERYTHING ELSE LA LA LAND COOKBOOK
None
None
PASSIVE ACTIVE
SPEED INDEX 14324 START RENDER TTI 13.879s > 17.516s HPPHMLL;-V
SPEED INDEX 14324 START RENDER TTI 13.879s > 17.516s 0.921s
> 5.511s 1651 HPPHMFN80p
HPPHMFN80p SPEED INDEX 14324 START RENDER TTI 13.879s > 17.516s
0.921s > 5.511s 1651 88% FASTER
5IFQFSDFQUJPOPG QFSGPSNBODFJTKVTUBT F⒎FDUJWFBTBDUVBM QFSGPSNBODFῶNBOZ DBTFT t u
5)"/,:06 :&4 5)&*--6453"5*0/4"3&.*/& DENYS MISHUNOV DIGITAL GARDEN AS @mishunov