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:
2008-04-23
You're making that up. JRuby actually uses LESS memory than C Ruby. JRuby 1.0 might have used about the same or a bit more, but we've never used ten times as much memory. And JRuby 1.1 consistently uses less memory than C Ruby. Or are you referring to an entire Rails app under JRuby with ten instances (to be able to handle ten concurrent requests) versus a single C Ruby instance (which can only handle one?) Both JRuby and C Ruby must start up multiple instances to handle concurrent requests in Rails. The difference is that JRuby does it automatically (configurable) and C Ruby does not. When you run both with the same number of instances, JRuby will win every time.
Check your facts please before you post comments like this.