Linked by Thom Holwerda on Sun 20th Apr 2008 15:43 UTC
Geek.com is running an opinion piece on the extensive reliance of programmers today on languages like Java and .NET. The author lambastes the performance penalties that are associated with running code inside virtualised environments, like Java's and .NET's. "It increases the compute burden on the CPU because in order to do something that should only require 1 million instructions (note that on modern CPUs 1 million instructions executes in about one two-thousandths (1/2000) of a second) now takes 200 million instructions. Literally. And while 200 million instructions can execute in about 1/10th of a second, it is still that much slower." The author poses an interesting challenge at the end of his piece - a challenge most OSNews readers will have already taken on. Note: Please note that many OSNews items now have a "read more" where the article in question is discussed in more detail.
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Member since:
2006-11-19
Seriously, Java and .Net are 200 times slower than C? Where those numbers come from, where is the study?
For the reverse side, there already are: There was a story in OSNews a few years back that showed MS C# compiler actually produced faster code than GCC C++ compiler on Windows on the same scenario (back then). And simple Google searches find similar things for Java, too: http://kano.net/javabench/
I'm not saying Java or C# is faster than C++, and don't completely believe in these benchmarks. But I know that they are at least comparable. As far as you're doing the same work, the results are very similar.
But as mentioned above, if you actually start doing more more work, (as in remote procedure calls, automated web services, virtual methods, reflection, etc) your execution time increases, naturally.
In my opinion, OSNews should increase its requirements a little bit, require some proof in the articles linked, in order not to include these ones.
Edited 2008-04-20 16:27 UTC