Brief introduction to Hyves' infrastructure, deploy system and Hiphop for PHP performance speedup

1. Infrastruttura
Hiphop for PHP
deploy
@ Hyves

2. Cos'è Hyves?
• Social network olandese
• 5.5mln utenti attivi
• 11mln utenti registrati
• ~170mln pageview/giorno
• 3500+ server
• 3 datacenter

3. Risorse
• Storage
• CPU
• Database, database, database...
• Cache
• Network
• Monitoring

4. Codice
• PHP (3.5 MLOC, tanta roba)
• Python
• BASH
• Java

5. Applicazioni
• Sito web
• Mobile (iPhone, Android)
• Giochi
• Ads
• Hyvesmobile

6. Hiphop for PHP, cos'è?
• Trasforma codice sorgente da PHP a C++
• Compilazione tramite GCC
• Reimplementazione completa di PHP
• Non proprio “brand new” (3+)
• Grosso progetto (1 MLOC Vs. 3 MLOC di PHP)
• Beta
• “Fucking FAST!”

7. Subsystems
• Runtime
o PHP types, operations and stuff
• Compiler
o Turn PHP code into C++
• Interpreter/eval
o Run PHP code directly
• Execution models
o Webserver, single execution, libraries

8. Runtime (the basis)
• Complete C++ reimplementation
C
• How to make C++ behave as PHP?
o Heavy operator overloading
o Heavy smart pointers
o Heavy reference counting
• = a nicer way to write core HPHP code and extensions!

9. Compiler (architecture)

10. Execution models
• Single execution
o Specify which "virtual file" to run
• Webserver
o libevent + evhttp based
o thread-pool
o service threads
• Embedded library
o C++, Java, Python

11. Neat stuff
• Upgrade with 0 downtime
o Socket transfer over a unix socket
• Memory manager
o Warm-up document
• Parallelization
o Parallel MySQL queries
• Stat counters
o Admin API

12. Hiphop don't
• (100% - 99% compatible) * size of Hyves = lots of shit
• No if (!class_exists('bla')) hyves_require_once('bla.php');
• create_function is borderline
• eval is borderline
• HIPHOP constant

13. Deploy
• ~ 500 server
•
• Generazione “mainweb”
•
• Testing, testing, testing e... testing
•
• BitTorrent
•
• Attivazione
•
• Go live

14. Sveglia! Ho finito...
Domande?
Curiosità?
marco.londero@linux.it ~ marco@hyves.nl ~ @tmarcuz