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pgbouncer increase pool_size, reload does not work

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hello!

i have a question for pgbouncer in case someone has faced this and there is
a solution available.

i have a db with pgbouncer where the pool_size is set to 50 (i ve noticed
this using both session/transaction modes). Sometimes there are waiting
sessions b/c more than 50 want to execute sth at once and usually each query
is not so fast. So let's say i want to increase the pool_size from 50 to 70.
I change the config file and then login to pgbouncer where i run a
'reload;'. Now when i check the 'show config' i see the new value in the
'default_pool_size' parameter. 

BUT

the problem is that the amount of servers is still 50 and does not go up to
70. At the same time there are clients in a 'waiting' state. If i do a
restart then it will work and the servers will be able to go up to 70.

I ve tried these in different databases and it doesnt happen all the time
but it does happen pretty often. 
Has anyone else seen this? if so, is there a solution (except restarting) or
explanation?


thank you in advance



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