DB2 Version 10.1 for Linux, UNIX, and WindowsBuffer pool monitoring in a DB2 pureScale environment
Examining
the number of times that pages of data requested by a member can
be found in group or local buffer pools, as opposed to the number
of times they need to be read in from disk can tell you where you
might have performance problems related to I/O.
Generally
speaking, larger buffer pools increase the likelihood that a required
page of data can be found in memory.
Viewing and comparing monitor elements related to buffer pool activity can help you understand the extent to which the group buffer pool (GBP) in the cluster caching facility, and the local buffer pools (LBPs) for each member are reducing the amount of disk I/O in your system.