Re: [racket-users] Re: updated Racket-on-Chez status

['Paulo Matos' via Racket Users]

On 30/01/2019 02:32, Alex Harsanyi wrote:
> I know the report explains the various cases where Racket CS is slower than
> Racket 7.1, but I would like to mention that these cases are very
> significant,
> at least in my case -- I mention this because the report recommends making
> Racket CS the default, which I am very concerned about:
> 
>> To maximize the maintenance benefits of Racket CS, it’s better to make it
>> the default Racket variant sooner rather than later
> 
> To understand the performance impact, below are the numbers for my
> application.  I mentioned this before [1] and I added some new timings
> to the
> Google Sheets Document [2].
> 
> * the total Travis build time (build + tests) is ~13 minutes using
> Racket 7.1
>   and it is 20 minutes, a 7 minute increase.
> 
> * the build time itself grows from 3.75 minutes in Racket 7.1 to 8.5 minutes
>   in Racket CS, a 5 minute increase.  My Edit-Compile-Run cycle is already
>   slow with Racket 7.1.
> 
> * even ignoring compile and load time, code sections which run after Racket
>   initialization and library loading indicate that the running time is
>   increased by 33% -- given that current execution time is several
> seconds to
>   several minutes in Racket 7.1, a 33% increase is very visible to the end
>   user.
> 
> As it stands now, the cases where RacketCS is slow have a significant impact
> on my application.  Do others see the same performance degradation in their
> applications?
> 

I am about to run some thorough tests and benchmarks on my app. Will
report back on this. Thanks for raising these issues.

-- 
Paulo Matos

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