Re: [PERFORM] pl/pgsql performance
On Fri, Apr 25, 2014 at 5:53 PM, Pavel Stehule pavel.steh...@gmail.com wrote: 2014-04-25 10:48 GMT+02:00 Mehdi Ravanbakhsh baba...@gmail.com: 2- how i can chose max connection number for pgsql server based on cpu core and RAM capacity that have maximum Efficiency? usually max performance is about 10 x CPU connections. But it highly depends on load. As well as transaction model counts, are you for example using long or short transactions? As a starting point, you could as well use something like ((core_count * 2) + effective_spindle_count). have a look here for more details: http://wiki.postgresql.org/wiki/Number_Of_Database_Connections#How_to_Find_the_Optimal_Database_Connection_Pool_Size -- Michael -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
[PERFORM] pl/pgsql performance
Hi All I have one big Pl/Pgsql function (about 1500 line code) , i can divided it to about 5 part and call each script from main script . In this case i need to know which way is faster . and some question about pgsql : 1- is pgsql engine open one process for each script ? 2- how i can chose max connection number for pgsql server based on cpu core and RAM capacity that have maximum Efficiency? Thanks and Best ergards.
Re: [PERFORM] pl/pgsql performance
Hello 2014-04-25 10:48 GMT+02:00 Mehdi Ravanbakhsh baba...@gmail.com: Hi All I have one big Pl/Pgsql function (about 1500 line code) , i can divided it to about 5 part and call each script from main script . In this case i need to know which way is faster . and some question about pgsql : 1- is pgsql engine open one process for each script ? PostgreSQL uses one CPU per session. 2- how i can chose max connection number for pgsql server based on cpu core and RAM capacity that have maximum Efficiency? usually max performance is about 10 x CPU connections. But it highly depends on load. Regards Pavel Stehule Thanks and Best ergards.
