No flame war here, just healthy discussion. :) I don't mean to over-state the benefit; I have not yet found a program where var invocation was actually the bottleneck and in general a lot of these differences are noise compared to the real meat of the code.
On Wednesday, August 6, 2014 7:13:01 PM UTC-5, Mike Thvedt wrote: > > I didn't want to start a flame war, I just didn't want people being misled > into thinking static vars are a big perf improvement for most code. It's > better do use ordinary dynamic vars unless you're sure it will be > beneficial for some tight loop somewhere. The usual case is the JIT inlines > the var access and inserts a single safety-check, and many kinds of tight > loops see no benefit (even when highly CPU bound). > > Regarding memory barriers, I believe the JIT does the same whether the > variable is volatile or not, because it can't write to memory if the > inlining is invalidated. But I could be wrong. Reducing code size can also > help inlining for some "inlining shapes". > > On Wednesday, August 6, 2014 5:54:32 AM UTC-5, Robin Heggelund Hansen > wrote: >> >> Just read this blog post about Oxen ( >> http://arrdem.com/2014/08/05/of_oxen,_carts_and_ordering/?utm_source=dlvr.it&utm_medium=twitter). >> >> In it is mentioned that Rich is re-introducing invokeStatic to achieve a >> possible 10% performance increase for Clojure 1.7. >> >> I couldn't find any information about this. Anyone know where I can find >> out more? >> > -- 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.
