ruby - ActiveRecord::ConnectionTimeoutError w/ rails, sidekiq & postgresql -

ruby - ActiveRecord::ConnectionTimeoutError w/ rails, sidekiq & postgresql -

i have rails application running postgresql , sidekiq. when scheduling big amount of background jobs take ~20 seconds each finish next error

activerecord::connectiontimeouterror: not obtain database connection within 5.000 seconds (waited 5.097 seconds)

in database.yml file have specified pool of 100. in postgres config have set max_connections 200 (as there other applications using postgres). seems should avoid problem not.

ideas?

ruby-on-rails ruby database postgresql sidekiq