thanks for answer On Monday, October 21, 2013 1:06:06 PM UTC+2, Frederick Cheung wrote: > > > > On Sunday, October 20, 2013 11:14:40 PM UTC+1, Oto Iashvili wrote: >> >> Hi, >> I would like to understand how to calculate optimal value for "pool" >> parameter in database.yml >> >> I'm using rails 3, ruby 2, postgres, elasticsearch, unicorn, nginx >> >> > My server : 12 coeurs 24 threads ( I dont know if it is necessary for >> define pool value) >> unicorn : worker_processes 24 >> I have around 1500 pages requested per minutes, and around 200ms per >> request >> >> > Unicorn only dispatches one request at a time to each worker, so the pool > setting doesn't matter: each worker will only process one request at a time > > Your numbers suggest you can do 5 requests per second per worker, ie 300 > per minute per worker, so it seems that you have ample resources. However > you'll probably need to do some testing to confirm this as it would only be > true if CPU is your bottleneck (as opposed to database concurrency for > example) > > >> Is it also useful/necessary to use this ? >> allow_concurrency: true >> >> not sure what that is without some context. > > Fred > >
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