I don't think so. Jetty is also multi-threaded; each request will be served by a new thread (within a bounded thread pool). Secondly, processor affinity is almost always a bad idea; the OS is pretty good at doing this for you.
At the very least I would have a test harness which measures the behaviour of the application under heavy concurrent access - I would be amazed if you any benefit from your approach. I wouldn't be surprised at all if it becomes much worse - sorry :). Note; I am not a performance specialist and even if I claimed to be one you should always take advice with a pinch of salt. It should be fairly easy to measure the difference between the two deployment models yourself. Sorry. On 20 October 2011 19:41, Tim Robinson <tim.blacks...@gmail.com> wrote: > This may not be a Clojure specific kind of question, but this is for > my Clojure web app(s) so hopefully it's not too far off. > > Currently when I deploy my web apps I run 1 app instance on 1 app > server. Given these are multi-core servers I am thinking about running > 4 app instances on a server to get max IO capabilities at a lower > cost. (Note that I currently using nginx, to route requests to a > Clojure/Ring+Jetty web app on a specified port. I am expecting that in > order to run 4 app instances I will need to load balance within nginx > to each port and also set the processor affinity for each app instance > to ensure they are balanced across cores). > > So here are my questions: > > 1. Does this idea make sense? why/whynot? > 2. Do you do currently do this for your web apps and can you provide > any insight/experiences that could be helpful? > 3. Is there a way to specify processor affinity within the > application, such that I wouldn't need to manually set them > afterwards? > 4. Are there better ideas to accomplish the same kind of thing? > > Thanks for any help/ideas. > > Tim > > > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with > your first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
