[erlang-questions] Extrange output of Âs and varing times on erlang console when testing array_vs_tuples

Angel <>
Sun Feb 7 22:25:50 CET 2010


Did you find similar diferences when running the rbdictized Test from erlang 
console and at the shell level? (Assumed you picked the original Joel's code 
to test rbdicts)

Ive been testing with diferenct heaps to see if is a memory related diference 
with no luck. All i can see (after deleting those Âs) is that this test 
behaves diferent with and without the erlang console...

provided the arr.erl module the following runs show diferent result and 
timmings:

 erl -noshell -run arr test -run init stop

Fixed-size array: get:     5332 µs, set:    11249 µs
Extensible array: get:     5334 µs, set:    10648 µs
Tuple:            get:     1222 µs, set:   437980 µs
Tree:             get:     9457 µs, set:    99774 µs

erl -run arr test -run init stop
Erlang R13B03 (erts-5.7.4) [source] [rq:1] [async-threads:0] [hipe] [kernel-
poll:false]

Eshell V5.7.4  (abort with ^G)
1> Fixed-size array: get:     5372 µs, set:    62407 µs
Extensible array: get:     5393 µs, set:    10772 µs
Tuple:            get:     2392 µs, set:   462941 µs
Tree:             get:     9481 µs, set:    99098 µs

so the rlang console is responsible form this unespected high runnig times 
(and those estrange Âs)





On Domingo, 7 de Febrero de 2010 22:00:02 usted escribió:
> Here is a version with other types added that you might be interested in:
> http://okeuday.livejournal.com/15662.html
> 
> Angel wrote:
> > 1) The  symbol is related to the microsecond symbol and appears only
> > when testing from the erlang console, where at bash level (konsole, and
> > plain tty) the caracter is not shown.
> >
> > 2) The time rougly doubles in the erlang console. Calling the test
> > funtion from bash via: "erl -noshell -run arr test" shown "proper" times.
> >
> > Can test code at: http://gist.github.com/266826  (Joel's github)
> >
> >
> >
> > :~/Documentos/Personal/Erlang/Code> erl -noshell -run arr
> > test -run init stop Fixed-size array: get:     5354µs, set:    11242µs
> > Extensible array: get:     5357µs, set:    10639µs
> > Tuple:            get:     1224µs, set:   441784µs
> > Tree:             get:     9409µs, set:   100486µs
> >
> >
> > :~/Documentos/Personal/Erlang/Code> erl
> > Erlang R13B03 (erts-5.7.4) [source] [rq:1] [async-threads:0] [hipe]
> > [kernel-poll:false]
> >
> > Eshell V5.7.4  (abort with ^G)
> > 1> arr:test().
> > Fixed-size array: get:    11618µs, set:    28557µs
> > Extensible array: get:    10083µs, set:    23536µs
> > Tuple:            get:     1218µs, set:   481610µs
> > Tree:             get:     9682µs, set:   102533µs
> > ok
> > 2> q().
> >
> >
> >
> >
> > /angel
> >
> >
> >
> >
> >
> >
> > Most people know C is not so high level....
> >                 ...Everybody else just got assembler overdose
> >
> >
> > ________________________________________________________________
> > erlang-questions (at) erlang.org mailing list.
> > See http://www.erlang.org/faq.html
> > To unsubscribe; mailto:
> 

Most people know C is not so high level....
                ...Everybody else just got assembler overdose
 


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