C# разве не мультиплатформный? - C# - Ответ 3248399

к тому же это не приводит к тормозам системы

You’ll probably find this hard to believe, but many people (including me) think that managed
applications could actually outperform unmanaged applications. There are many reasons
to believe this. For example, when the JIT compiler compiles the IL code into native code at
runtime, the compiler knows more about the execution environment than an unmanaged
compiler would know. Here are some ways that managed code can outperform unmanaged
code:
* A JIT compiler can determine if the application is running on an Intel Pentium 4 CPU
and produce native code that takes advantage of any special instructions offered by
the Pentium 4. Usually, unmanaged applications are compiled for the lowest-commondenominator
CPU and avoid using special instructions that would give the application a
performance boost.
* A JIT compiler can determine when a certain test is always false on the machine that it
is running on. For example, consider a method that contains the following code:
if (numberOfCPUs > 1) {
...
}
This code could cause the JIT compiler to not generate any CPU instructions if the host
machine has only one CPU. In this case, the native code would be fine-tuned for the
host machine; the resulting code is smaller and executes faster.
* The CLR could profile the code’s execution and recompile the IL into native code while
the application runs. The recompiled code could be reorganized to reduce incorrect
branch predictions depending on the observed execution patterns. Current versions of
the CLR do not do this, but future versions might.