David, > But, I'm also still interested in the answer to my question: is there > any reason you could not put an 8.0 tablespace on a RAM disk? Some people have *talked* about trying it, but nobody yet has reported back. I can see a few potential problems: 1) The query planner would not be aware, and could not be made aware short of hacking the source, that one tablespace has different access speeds than the others; 2) After a crash, you might be unable to recover that tablespace, and PG would refuse to bring the system back up without it. However, the best thing to do is to try it. Good luck, and do a write-up for us! -- Josh Berkus Aglio Database Solutions San Francisco
