> On Wed, Jun 09, 2004 at 10:49:20PM +0800, Christopher Kings-Lynne wrote: >> >I love PG, I've been using it since version 6x, and it has gotten >> >fantastic over the years, and in many cases, I would choose it over >> >Oracle, but for systems that need frequent updates, I have a lot of >> >concerns. >> >> ...that's the price you pay for concurrency man... > > Also he said that the problem was solved with enough lazy VACUUM > scheduling. I don't understand why he doesn't want to use that > solution. >
Sigh, because vacuums take away from performance. Imagine a table that has to be updated on the order of a few thousand times a minute. Think about the drop in performance during the vacuum. On a one row table, vacuum is not so bad, but try some benchmarks on a table with a goodly number of rows. ---------------------------(end of broadcast)--------------------------- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match