Looks like , pgbench cannot be used for testing with pgbouncer if number of pgbench clients exceeds pool_size + reserve_pool_size of pgbouncer. pgbench keeps waiting doing nothing. I am using pgbench of postgresql 8.1. Are there changes to pgbench in this aspect ?
regds Rajesh Kumar Mallah. On Sun, Jul 18, 2010 at 11:38 PM, Rajesh Kumar Mallah < mallah.raj...@gmail.com> wrote: > > > On Sun, Jul 18, 2010 at 10:55 PM, Greg Smith <g...@2ndquadrant.com> wrote: > >> Rajesh Kumar Mallah wrote: >> >>> the no of clients was 10 ( -c 10) carrying out 10000 transactions each >>> (-t 10000) . >>> pgbench db was initilised with scaling factor -s 100. >>> >>> since client count was less there was no queuing of requests in pgbouncer >>> i would prefer to say it was in 'passthrough' mode. >>> >> >> Of course pgbouncer is going decrease performance in this situation. >> You've added a whole layer to things that all traffic has to pass through, >> without a setup that gains any benefit from the connection pooling. Try >> making the client count 1000 instead if you want a useful test. >> > > Dear Greg, > > my max_client is 300 shall i test with client count 250 ? > if so what should be the scaling factor while initializing > the pgbench db? > > >> -- >> Greg Smith 2ndQuadrant US Baltimore, MD >> PostgreSQL Training, Services and Support >> g...@2ndquadrant.com www.2ndQuadrant.us >> >> >
