Ruby 2.1: RGenGC · computer talk by @tmm1
30 Dec 2013 Ruby 2.1 adds a "restricted" generational collector, with minor mark phases that dramatically reduce the cost of GC. Let's take a look at the evolution of Ruby's GC. Ruby 1.8: simple mark and sweep Classic mark and sweep implementation. The entire world is stopped during both phases. Traverse object graph from roots and mark live objects, using a bit inside the object structure (FL_MAR
Ruby 2.1: Profiling Ruby · computer talk by @tmm1
24 Dec 2013 Ruby 2.1 is shipping with rb_profile_frames(), a new C-api for fetching ruby backtraces. The api performs no allocations and adds minimal cpu overhead making it ideal for profiling, even in production environments. I've implemented a sampling callstack profiler for 2.1 called stackprof with this API, using techniques popularized by gperftools and @brendangregg. It works remarkably well
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