performance tuning

阅读更多

laetcy
GC log - heap tuning

how many time of gc
how long of the test

peek loading

gc pwous time

ISA ( IBM analysior )

5% of gc time

grap

Winky
thread pool
connection pool

graciefrontcontroller

AWR - ADDM

 

DB parameters fine tune

If need to apply

DB

db_keep_cache_size

2G

Probably need more memory(below two) allocating, must has twice or more of

DB	memory_max_target	4G(at least)
DB	memory_target	4G(at least)

WAS setting depence on the DB parameter

WAS	JDBC	Statement cache size	350
DB		open_cursors	1000(300)

if not

maximum open cursors exceeded