2012/11/19 Eric Wong <[email protected]>: > Andrew Stewart <[email protected]> wrote: >> Good morning, >> >> The tuning page says worker_processes should be at least the number of >> CPU cores on a dedicated server. In the case of hyper-threading, >> should this be the number of cores or the number of threads? >> >> For example the Intel Core i7-2600 Quadcore[1] has 4 cores and 8 >> threads. Would I start my worker_processes at 4 or 8? > > I'd start with the number of threads, since (AFAIK) your CPU implements > HT well (unlike the P4 family). Modern OSes multitask well, so more > worker processes will always work until it bumps into another limit > (e.g. memory usage, DB connections, disk contention, ...)
Hi (in plain text this time, sorry), I have a follow up question about this. What about having a few different unicorns (1 for each Ruby/Rails app) on a singe server ; "at least the number of CPU cores" should count the total number of children processes, or only per app ? To be extremely clear ; if I have 2 quad-core CPUS with HT (eg. 16 cores), can I have 16 unicorn workers per app, or total ? Thanks PS : I've had my first unicorns in production for a few days, and I'm very happy about this wonderful piece of software. Thanks for making/maintaining it. -- Jérémy Lecour : http://jeremy.wordpress.com - http://twitter.com/jlecour _______________________________________________ Unicorn mailing list - [email protected] http://rubyforge.org/mailman/listinfo/mongrel-unicorn Do not quote signatures (like this one) or top post when replying
