On Apr 15, 2012 9:28 PM, "Casper Bang" <casper.b...@gmail.com> wrote: > > Isn't it really quite simple: Managed and non-managed languages make different fundamental trade-offs, opting for either performance or productivity when these are in tension. >
Even that isn't strictly true. There are two notable areas where a managed language will offer better performance: 1. Heavy churn of memory usage. Bumping a heap pointer is significantly faster than malloc/free. Yes, you can duplicate this in a non-managed language using e.g. placement new in C++. You're basically just making your language a little bit more managed to achieve this though, and it's remarkably easy to royally screw it up when you do so. 2. A managed language will optimise jit compilation based on runtime metrics. These will change based on runtime data, and the framework can even make a speculative (but beneficial) optimisation, then revert if it turns out to be inappropriate. A statically compiled language simply doesn't have this opportunity available. > Empirical evidence suggests t's easier to develop an Android application, but harder to make it feel fast. While it's harder to develop an iOS application, it's easier to make it feel fast. In other words, it's rare (if ever) you hear of an implementation of an app that feels snappier on Android than on iOS - even if iOS hardware is often inferior. > > /Casper > > On Saturday, April 14, 2012 10:13:53 PM UTC+2, phil swenson wrote: >> >> This guy claims: >> >> "Unfortunately, Java's designers didn't seem to value CPU time at all. >> The language has a nasty reputation for sluggish interfaces, and its >> execution speed drags well behind C++'s. Pointer aliasing or not we >> are many generations of optimisers away from languages such as Java >> overtaking C++ so if you need fast code C/C++ is the obvious choice." >> >> article here: >> http://slidetocode.com/2012/04/14/objective-c/ >> >> discussion here: >> http://news.ycombinator.com/item?id=3840861 > > -- > You received this message because you are subscribed to the Google Groups "The Java Posse" group. > To view this discussion on the web visit https://groups.google.com/d/msg/javaposse/-/KFgl26W0VSAJ. > > To post to this group, send email to javaposse@googlegroups.com. > To unsubscribe from this group, send email to javaposse+unsubscr...@googlegroups.com. > For more options, visit this group at http://groups.google.com/group/javaposse?hl=en. -- You received this message because you are subscribed to the Google Groups "The Java Posse" group. To post to this group, send email to javaposse@googlegroups.com. To unsubscribe from this group, send email to javaposse+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/javaposse?hl=en.
