Article: Increasing the D Compiler Speed by Over 75%

[Bill Baxter]

Certainly you're technically correct about the 75% improvement in speed,
but the units of speed for program execution is a little weird and
unintuitive (Hz).   I've not run across anyone who says "my program got
faster! It went from 0.05 Hz to 0.08 Hz!".  I think that's why people find
it a little odd to talk about speed increase rather than time decrease.


On Sat, Jul 27, 2013 at 8:12 PM, torhu <no at spam.invalid> wrote:

> On 26.07.2013 01:15, Leandro Lucarella wrote:
>
>> Walter Bright, el 25 de July a las 14:27 me escribiste:
>>
>>> On 7/25/2013 11:49 AM, Dmitry S wrote:
>>> >I am also confused by the numbers. What I see at the end of the article
>>> is
>>> >"21.56 seconds, and the latest development version does it in 12.19",
>>> which is
>>> >really a 43% improvement. (Which is really great too.)
>>>
>>> 21.56/12.19 is 1.77, i.e. a >75% improvement in speed.
>>>
>>
>> This is certainly misleading, is very easy to be confused with a time
>> reduction of 75%, which one would expect to be 1/4 of the original time.
>> :)
>>
>>
> A doubling of the speed would be 100%, just saying.
>
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