On Tue, Jan 26, 2016 at 2:44 PM, Andrew Barnert <abarn...@yahoo.com> wrote:
> On Jan 25, 2016, at 19:32, INADA Naoki <songofaca...@gmail.com> wrote: > > On Tue, Jan 26, 2016 at 12:02 PM, Andrew Barnert <abarn...@yahoo.com> > wrote: > >> On Jan 25, 2016, at 18:21, INADA Naoki <songofaca...@gmail.com> wrote: >> > >> > I'm very interested in it. >> > >> > Ruby 2.2 and PHP 7 are faster than Python 2. >> > Python 3 is slower than Python 2. >> >> Says who? >> > > For example, http://benchmarksgame.alioth.debian.org/u64q/php.html > In Japanese, many people compares language performance by microbench like > fibbonacci. > > > "In Japan, the hand is sharper than a knife [man splits board with karate > chop], but the same doesn't work with a tomato [man splatters tomato all > over himself with karate chop]." > > A cheap knife really is better than a karate master at chopping tomatoes. > And Python 2 really is better than Python 3 at doing integer arithmetic on > the edge of what can fit into a machine word. But so what? Without seeing > any of your Japanese web code, much less running a profiler, I'm willing to > bet that your code is rarely CPU-bound, and, when it is, it spends a lot > more time doing things like processing Unicode strings that are almost > always UCS-2 (about 110% slower on Python 2) than doing this kind of > arithmetic (9% faster on Python 2), or cutting tomatoes (TypeError on both > versions). > > Calm down, please. I didn't say "microbench is more important than macrobench". While editor is not a main problem of software development, people likes comparing vim and emacs. Like that, Japanese dev people likes comparing speed. While it's not a real problem of typical application, new people should choose first (and probably main) editor and language. Slowest on such a basic microbench gives bad impression for them. Additionally, some application (e.g. traversing DOM) makes much function calls. Faster function call may makes some *real* application faster. -- INADA Naoki <songofaca...@gmail.com>
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