"Simon Riggs" <simon(at)2ndquadrant(dot)com> writes:
> It seems possible to reduce overall WAL volume by roughly 25% on common
> workloads by optimising the way UPDATE statements generate WAL.
This seems a huge amount of work to optimize *one* benchmark. If it
weren't so narrowly focused on the properties of a particular benchmark
(mostly UPDATE, mostly a few columns in wide tuples), I'd get more
excited. The extra time spent holding exclusive lock on the page
doesn't sound attractive either ...
regards, tom lane