Re:Debunking the Java Performance Myth
by jacques_chester on Sunday October 22, 2017 @11:56AM
(#15527343)
I would say that of these, most are still true-ish, except web apps and some CPU-intensive cases. Where you have a long-running service, Java shines.
Java marketing was a disaster. Remember when it was going to be the replacement for browsers? It was not a great way to engender goodwill.
It was easy to find benchmarks showing that Java was fast. But Java turned out to be slower in every situation we might consider using it.
Command-line applications were slower because the JVM took ages to start.
GUI applications were slower, apparently because Python would use C-implemented widgets while Java would do much of the drawing itself.
Web applications were slower without any good excuse as far as I could see, but something in the application server that was the mainstream way of doing things added more per-request overhead than starting a whole new Python interpreter via CGI.
CPU-intensive operations (I remember image resizing in particular) were slower because, again, you ended up comparing the JVM against a well-written C extension.