raising warning flag on firewalld-default feature

[Kevin Kofler]

Alek Paunov wrote:

> On 13.11.2012 18:35, Richard W.M. Jones wrote:
>> This seems about right to me: Both ocamlopt & gcc generate native
>> x86-64 programs, but there's a small amount of overhead in the OCaml
>> binary (initializing the minor heap of the GC).
>>
> 
> luajit too (it is one of the fastest compilers)

Unlike the others, it generates the native code at runtime (Just In Time), 
so there is a performance penalty (especially for nontrivial programs) for 
the (JIT) compilation which gcc and ocamlopt won't have. The quality of the 
generated code could also be a problem (for nonempty programs): Optimized 
compilation takes time! So there's a tradeoff between the time of the JIT 
compilation and the time of the actual execution, a very fast JIT is not 
necessarily optimal because it may be missing important optimizations of the 
compiled code.

In other words: Try nontrivial benchmarks before claiming victory.

        Kevin Kofler