John Maddock wrote:
Jeff Garland wrote:
That said, it's one data point and what you're doing may have totally different results. That's not to mention the effect of the compiler -- gcc doesn't have a greatest reputation for optimization although it's been improving. And, you're also depending on other programmers to write good benchmarks.
Yep, looking at the source code for the test, my first impression is that most of the time is likely to be taken up with the iostream code. I also
Interesting...
notice that the C-language PCRE test takes almost exactly the same amount of time as the two C++ / Boost-Regex tests, in spite of avoiding high level constructs like std::string.
Yeah, it makes me generally suspicious about the benchmark quality when a scripting language like perl outperforms C -- just because the internals of perl (and most everything else for that matter) are written in C. But in the case of regex I guess I can believe that the perl folks may have written a highly optimized regex implementation (in C of course) that makes things run fast.
Might be tempting to try and do better...
As I understand the shootout rules you're free to make it better :-) Jeff