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.rajesh@xxxxxxxxx> wrote:
On Sun, Jul 18, 2010 at 10:55 PM, Greg Smith <greg@xxxxxxxxxxxxxxx> wrote:
Rajesh Kumar Mallah wrote: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.
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.
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
greg@xxxxxxxxxxxxxxx www.2ndQuadrant.us
