On Fri, 26 Oct 2007, Tom Lane wrote:

The 8.3 bgwriter keeps running even during checkpoints, so it's feasible
to add such a feature now.
I wonder though whether the walwriter wouldn't be a better place for it.

I do, too, but that wasn't available until too late in the 8.3 cycle to consider adding this feature to there either.

There's a couple of potential to-do list ideas that build on the changes in this area in 8.3:

-Aggressively pre-allocate WAL segments -Space out checkpoint fsync requests in addition to disk writes -Consider re-inserting a smarter bgwriter all-scan that writes sorted by usage count during idle periods

* Greg Smith [EMAIL PROTECTED] http://www.gregsmith.com Baltimore, MD

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