Are those patches already includes in 5.5 community version?

[Zhu,Chao]

For pathces like :

*EBay Patches (5.0)* have included:

   - variable length memory storage engine
   - pool of threads
   - Virtual columns

and others like

*Google Patches (5.0 & 5.1)* included improvements in :

   - statistics/monitoring
   - lock contention
   - binlog
   - malloc()
   - filesorts
   - innodb I/O and wait statistics
   - SHOW …STATISTICS statements
   - smp scalability
   - I/O scalability
   - semisync replication
   - many more

*Percona Patches (5.0)* focus on

   - statistics/monitoring
   - performance/scalability
   - buffer pool content/mutexes
   - microslow patch

Thx

-- 
Regards
Zhu Chao