珠三角技术沙龙深圳小沙龙4月份活动小路主题

1. MYSQL
--------

2. keynote
•
• ( )
•
• ,
keynote ,

3. mysql yoursql?
• percona server
• mariadb
• drizzle
• oracle’s sql(MYSQL 5.5)

4. MYISAM
• MYISAM ,
OA
• MYISAM ,
• INNODB MYSQL

5. innodb 1.1
•
innodb 1.1,MYSQL 5.5
• , MYSQL 5.1
innodb 1.0 ( 1.04
, )

6. • double write,
• ,
, ( db
?)

10. • log, table space,
WAL,
• fuzzy checkpoint ,
table space
• log log buffer,
, IO IO

11. ( MYSQL)

12. innodb_buffer_pool_size
• buffer_pool 80%
• insert buffer, ,

13. innodb_additional_mem_pool_size
• buffer_pool 200:1,
buffer_pool 200M, 1M.
• hash meta LRU

14. innodb_log_file_size
• ,
,
• , , ,1G
10

15. innodb_log_buffer_size
• , , , ,log
buffer ....
• , .. (
)

16. innodb_adaptive_flushing
• flush , redo log
flush
• percona ,
.. .. !

17. innodb_max_dirty_pages_pct
• google 80
• 80% buffer pool, flush
dirty page table space
• adaptive flush ,fuzzy checkpoint

18. innodb_flush_method
• default(fsync),O_DIRECT,O_DSYNC
• fsync linux API, man
• O_DIRECT O_DSYNC open ,
man
• MYISAM , OS buffer
, ....INNODB

19. innodb_flush_log_at_trx_commit
• 0,1,2,
•0 ACID
•1 , ACID
•2 ACID( , )

20. innodb_io_capacity
• 100 ,
• , 500 ,
X, ,

21. innodb_support_xa
• slave
• binlog MYSQL
• N ( )

22. adaptive hash , ?
• , ....
• innodb , B+ ,
hash
• hash ,

23. , X
•
•
• , ...

24. ?
• ( explain )
• flash cache( )
• ( )
• CPU ( )
• , DB( )

25. ?
• , DBA
• ,