New benchmarks have been run for a variety of Clojure web servers, and the results can be found at https://github.com/ptaoussanis/clojure-web-server-benchmarks#ubuntu-1404--2x-xeon-x5650. The top-performing servers are based on Undertow (ring-undertow, Immutant v2), Netty (Aleph), and nginx (nginx-clojure) respectively.
The benchmark hardware was dual-socket 2010-era Xeons, which is the hardware profile of choice at Factual. This means that there were 24 hardware threads, but each core was noticeably slower than those on modern desktop processors. This caused http-kit, which only uses a single thread for I/O, to perform worse than it would have on a system with fewer, faster cores. As always, these benchmarks are very contrived, and not representative of most real-world applications. Adding something as simple as Ring's `wrap-keyword-params` middleware on Clojure 1.6.0 would reduce throughput on all servers by a factor of 3-4x. Luckily keyword creation will be much cheaper in Clojure 1.7.0, so this particular problem won't exist for much longer, but it's important to remember that performance is a property of your entire application, not just the underlying web server. With that said, it's great to see that so many people are taking server performance in Clojure seriously. However contrived these benchmarks are, a lot of people use them as a proxy for a language's "maturity", and further effort in this space can only help Clojure's adoption. Zach -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
