Jan Wieck <[EMAIL PROTECTED]> writes: > Doesn't cranking up the bgwriter_percent to 100 effectively make the entire > shared memory a write-through cache? In other words, with 100% the bgwriter > will allways write all dirty blocks out and it becomes unlikely to avoid an IO > for subsequent modificaitons to the same data block.
If the goal is to not write out hot pages why look in T1 at all? Why not just flush 100% of the dirty pages from T2 and ignore T1 entirely? -- greg ---------------------------(end of broadcast)--------------------------- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match