[antlr-interest] BENCHMARK. ANTLR. Bad results.

[John D. Mitchell]

>>>>> "Ruslan" == Ruslan Zasukhin <sunshine at public.kherson.ua> writes:
[...]

>> I am talking about MS Windows internals -- the OS allocator is a POS
>> w.r.t. performance (again, unless they completely changed it in recent
>> editions).

> OS allocator this is what we all use.

No, some of us use better operating systems which have better allocators.

Sometimes, if we're stuck with bad OSs, instead of sticking with the
wretched allocator, we go to the hassle of replacing it (the simplest way
being to front the OS's allocator with an (intelligent) wrapper.

> But exists many different Heap Manager models.

> E.g. For small objects you will get better speed and smaller RAM usage if
> you wil use not just OS allocator but special manager. This is described
> in the C++ book of Stroustrup.

Yes, that makes things better but that doesn't mean that the underlying
performance of the OS's allocator isn't affecting performance.

"Profile, don't speculate." --DJB

Take care,
	John


 
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