On Wed, 11 Jan 2006, Tom Lane wrote:
> > It'd be possible to do something like this: after establishing > RedoRecPtr, make one quick pass through the buffers and make a list of > what needs to be dumped at that instant. Then go back and do the actual > I/O for only those buffers. I'm dubious that this will really improve > matters though, as the net effect is just to postpone I/O that will > happen anyway soon after the checkpoint (as soon as the bgwriter goes > back to normal activity). > We could extend the grammar to CHECKPOINT [FULL/PARTIAL] to let the user decide what to do. If PARTIAL, an important reason is for fast recovery. Regards, Qingqing ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend