On Fri, Mar 10, 2006 at 10:39:57PM -0300, Andre Felipe Machado wrote: > It seems that effective_cache_size does not tell postgresql to actually > use windows disk cache. No, it just tells PostgreSQL how much cache memory it should expect to have. > What parameter must be configured? > Do you have some suggestions? Well, you could try increasing shared_buffers, but the real question is why Windows isn't caching the data. Are you sure that the data you're reading is small enough to fit entirely in memory? Remember that Firebird has a completely different on-disk storage layout than PostgreSQL, so just because the table fits in memory there doesn't mean it will do so on PostgreSQL. -- Jim C. Nasby, Sr. Engineering Consultant jnasby@xxxxxxxxxxxxx Pervasive Software http://pervasive.com work: 512-231-6117 vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461