IBM WEBSPHERE 6.1.X - Manual (Page 56)

5 1
W E B S P H E R E P O R T A L V 6 . 1 T U N I N G G U I D E
IBM Tivoli Directory Server Tuning
The following table shows the tuning values used for the directory servers.
How-to-Set: These values are in the file /opt/IBM/ldap/V6.0/etc/SchemaV6.0/ibmslapd.conf. You
must restart the LDAP server after changing these values.
Table 28: IDS Tuning in Vertical Cluster
Parameter Setting Used
Ibm-slapdACLCacheSize 250000
Ibm-slapdEntryCacheSize 250000
Ibm-slapdFilterCacheSize 250000
Ibm-slapdFilterCacheBypassLimit 7500
The IBM Tivoli Directory Server uses IBM DB2 as the database server. The database
instance and alias are named IDSLDAP. We applied the following tuning to this database:
db2 “update db config for idsldap using dbheap 4800”
db2 “update db config for idsldap using num_iocleaners 5”
db2 “update db config for idsldap using num_ioservers 10”
db2 alter bufferpool IBMDEFAULTBP size 88500
db2 alter bufferpool LDAPBP size 3690
Required Fixes
•
The following fixes are required to apply in 6.1 Cluster environment,
•
PK67324 (for Windows is PK67800)
•
WAS DynaCache PK67942
•
WAS DynaCache PK59026 (include PK62850 and prereq PK67942), to
eliminate renounce messages
•
PK70944: to eliminate GroupCache invalidation
•
PK70890: Friendly URL fix
•
The following fix is required to apply in 6.1.0.1 Cluster environment
PK76988: Cluster performance Degradation by large amount of DRS invalidation
messages