Brian Schott wrote:
On Thursday, 3 October 2013 at 20:11:02 UTC, Andrei Alexandrescu wrote:
I see we're considerably behind dmd. If improving performance would
come at the price of changing the API, it may be sensible to hold off
adoption for a bit.
Andrei
The old benchmarks measured total program run time. I ran a new set of
benchmarks, placing stopwatch calls around just the lexing code to
bypass any slowness caused by druntime startup. I also made a similar
modification to DMD.
Here's the result:
https://raw.github.com/Hackerpilot/hackerpilot.github.com/master/experimental/std_lexer/images/times5.png
I suspect that I've made an error in the benchmarking due to how much
faster std.d.lexer is than DMD now, so I've uploaded what I have to Github.
https://github.com/Hackerpilot/lexerbenchmark
Interestingly, DMD is only faster when lexing std.datetime. This is
relatively big file, so maybe the slowness is related to small buffering
in std.d.lexer?
