[erlang-bugs] Erlang 18.0-rc1 is behaving slower than 17.4 (and 17.5)

[Jesper Louis Andersen]

I'm an export at messing up data sets. Corrected plot:

http://imgur.com/N3mvRnn

On Tue, Apr 14, 2015 at 1:07 PM, Jesper Louis Andersen <
jesper.louis.andersen@REDACTED> wrote:

> On Tue, Apr 14, 2015 at 7:55 AM, José Valim <
> jose.valim@REDACTED> wrote:
>
>> Yup, it is the due to the timer wheel. +S 1 reduces it. I believe Lukas
>> mentioned it would take around 1 word MB per scheduler.
>
>
> r18 +S1 is actually faster in the median it seems, but it does have some
> speed bumps higher up:
>
> http://imgur.com/xTZc4qn
>
> > summary(r17)
>        V1           version
>  Min.   :0.1900   Length:100
>  1st Qu.:0.1930   Class :character
>  Median :0.1940   Mode  :character
>  Mean   :0.1946
>  3rd Qu.:0.1960
>  Max.   :0.2040
> > summary(r18s1)
>        V1           version
>  Min.   :0.1880   Length:100
>  1st Qu.:0.1900   Class :character
>  Median :0.1910   Mode  :character
>  Mean   :0.1957
>  3rd Qu.:0.1940
>  Max.   :0.3000
>
> To recreate this, use ggplot2, but use strings for the version and then
> use those version strings as factors:
>
> p <- ggplot(x, aes(x = V1, colour=factor(version)))
> p + geom_density()
> png('out.png')
> p + geom_density()
> dev.off()
>
>
>
>
>
> --
> J.
>



-- 
J.
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