Mark Mielke wrote: > Asynchronous I/O is no more a magic bullet than threading. It requires a > lot of work to get it right, and if one gets it wrong, it can be slower > than the regular I/O or single threaded scenarios. Both look sexy on > paper, neither may be the solution to your problem. Or they may be. We > wouldn't know without numbers. Agreed. We currently don't use multiple CPUs or multiple disks efficiently for single-query loads. There is certainly more we could do in these areas, and it is on the TODO list. The good news is that most work loads are multi-user and we use resources more evenly in those cases. -- Bruce Momjian <bruce@xxxxxxxxxx> http://momjian.us EnterpriseDB http://postgres.enterprisedb.com + If your life is a hard drive, Christ can be your backup. + ---------------------------(end of broadcast)--------------------------- TIP 7: You can help support the PostgreSQL project by donating at http://www.postgresql.org/about/donate