Profiling JRuby with NetBeans - polycrystal

Nice article on hooking up NetBeans profiler to JRuby, for investigating hot spots in your Ruby app.

Profiling JRuby with NetBeans A case study and tutorial on using the NetBeans profiler to profile Ruby code running on the JVM via JRuby. Walks through the steps of configuring NetBeans, launching JRuby with profiling settings, connecting NetBeans to JRuby, and analyzing the ... Comparing Ruby exceptions to additional stat() test A common idiom in Ruby code (FileUtils, ActiveSupport, Hike) when dealing with a file or directory that may or may not exist is to go ahead and call a method that expects the file to exist (such as open), and catch the exception raised for nonexistent ... ActiveRecord connection pool fairness ActiveRecord maintains a pool of database connections that may be used by multiple threads to perform database work. If many threads are contending for a smaller number of connections, the behavior of the connection pool becomes important. Read ... Asynchrono...

Full article: http://polycrystal.org/2012/10/26/profiling_jruby_with_ne...