I just collected all the good internals information included in this
thread and popped it onto http://wiki.postgresql.org/wiki/Hint_Bits where
I'll continue to hack away at the text until it's readable. Thanks to
everyone who answered my questions here, that's good progress toward
clearing up
Tom Lane wrote:
One additional point: this means that one transaction in every 32K
writing transactions *does* have to do extra work when it assigns itself
an XID, namely create and zero out the next page of pg_clog. And that
doesn't just slow down the transaction in question, but the next few
g