Re: Why use C++ instead of Java?

From:
SG <s.gesemann@gmail.com>
Newsgroups:
comp.lang.c++
Date:
Mon, 7 Sep 2009 00:05:03 -0700 (PDT)
Message-ID:
<49b0f978-acb5-42df-b988-c3a714a970b0@s31g2000yqs.googlegroups.com>
On 7 Sep., 08:26, "Chris M. Thomasson" wrote:

Here is the output I get from the C++ program above:
______________________________________________________________________
$ time ./test

real 0m9.871s
user 0m0.031s
sys 0m0.015s
______________________________________________________________________

Here is the output I get from the Java program above:
______________________________________________________________________
$ time java alloc
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
        at alloc.main(alloc.java:10)

real 0m1.506s
user 0m0.015s
sys 0m0.062s
______________________________________________________________________

Wow! I guess Java just does not get along with 512mb of ram. Shi% happens
man!


For the most part it's a QoI issue (quality of implementation) and not
really related to the programming language. Why should the C++ version
of dynamically allocating many small objects be slower than the Java
version?

What GCC and JVM versions did you use?

Cheers!
SG

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