std.d.lexer performance (WAS: std.d.lexer : voting thread)

[Andrei Alexandrescu]

On 10/3/13 1:15 PM, Brad Anderson wrote:
> On Thursday, 3 October 2013 at 20:11:02 UTC, Andrei Alexandrescu wrote:
>> On 10/3/13 12:47 PM, Brian Schott wrote:
>>> On Thursday, 3 October 2013 at 19:07:03 UTC, nazriel wrote:
>>>> (Btw, someone got benchmarks of std.d.lexer?
>>>> I remember that Brain was benchmarking his module quite a lot in order
>>>> to catch up with DMD's lexer but I can't find links in IRC logs. I
>>>> wonder if he achieved his goal in this regard)
>>>
>>> The most recent set of timings that I have can be found here:
>>> https://raw.github.com/Hackerpilot/hackerpilot.github.com/master/experimental/std_lexer/images/times4.png
>>>
>>>
>>>
>>> They're a bit old at this point, but not much has changed in the lexer
>>> internals. I can try running another set of benchmarks soon. (The
>>> hardest part is hacking DMD to just do the lexing)
>>>
>>> The times on the X-axis are milliseconds.
>>
>> 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
>
> Considerably?  They look very similar to me.  dmd is just slightly winning.

To me 10% is considerable.

Andrei