Simon Riggs wrote:
On Fri, 2007-11-30 at 06:31 +0000, Simon Riggs wrote:
I also notice that two performance features have disappeared from the
release notes. (Presumably they have been removed from source). Both of
them have changes that can be seen by users, so can't see why we would
want them removed.
Wow, just realised 3 of Heikki's performance patches aren't mentioned
either:
- CheckpointStartLock removal
I don't think it's worth mentioning, given that we have the Load
Distributed Checkpoints in there. That alone will tell people that
there's been some major changes to checkpoints.
- I/O reduction during recovery
This might be worth mentioning, since it can be quite a big difference
in the right circumstances, and it helps a bit with the scalability
problem of the recovery. Should mention that it only helps with
full_pages_writes=on. One more reason to not gamble with data integrity ;-).
- Tuning of Visibility code
I don't think that was release notes worthy.
The release notes are quite long already...
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com
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