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/O reduction during recovery > > - Tuning of Visibility code > > I'm not sure what the rationale is for not mentioning these things. > They're at least as important, if not more so, than mentioning minor > source code changes.
The source code changes are more _visible_, I think, meaning they often require programmers to adjust their code. > If people understand there aren't 13 performance improvements there are > at *least* 19+ that is a positive message to help people decide to > upgrade. Frankly I think most people expact an X% improvement in every Postgres release. I don't see how mentioning 19 vs. 13 items is going to change the general understanding that you should upgrade to get better performance. -- Bruce Momjian <[EMAIL PROTECTED]> http://momjian.us EnterpriseDB http://postgres.enterprisedb.com + If your life is a hard drive, Christ can be your backup. + ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
