On Fri, Jun 09, 2006 at 02:23:04PM +0200, Domenico - Sal. F.lli Riva wrote: > Hello, > > During insert or update, potgresql write in pgsql_tmp directory and so > performance are very poor. pgsql_tmp is used if a query runs out of work_mem, so you can try increasing that. > My configuration is: > > Work mem 10240 > > Effective_cache_size 30000 You're off by a factor of 10. > Shared buffers 9000 I'd suggest bumping that up to at least 30000. > Postgresql (RPM from official website) 8.1.0 You should upgrade to 8.1.4. There's a number of data loss bugs waiting to bite you. -- 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