I was seeing thanks to your recommendations and I found the following, to see what you think cache hit rate 0.99637443599712620769 We have the default values 5 minutes total checkpoint minutes beetween checkpoint 26927 0.358545045634493 temp_files temp_size (in 10 days) 16870 171 GB believe that the problem may come here? -- Sent from: http://www.postgresql-archive.org/PostgreSQL-performance-f2050081.html