tuneR::readMP3 may not be allocating (or freeing) memory correctly. On both
Linux and Windows I get the following (where 'jingle.mp3' is a sample mp3 that
comes with Processing 2.1 which has a quarter million samples in it). If I do
this as a sequence of top-level expression instead of as a for loop R does not
crash. Perhaps you should talk with tuneR's maintainer, who could run valgrind
over it.
> library(tuneR)
tuneR >= 1.0 has changed its Wave class definition.
Use updateWave(object) to convert Wave objects saved with previous
versions of tuneR.
> b <- readMP3("jingle.mp3")
> for(i in 1:100){cat(i,"");b <- readMP3("jingle.mp3")}
1 2
*** caught segfault ***
address 0x3a81000, cause 'memory not mapped'
Traceback:
1: .Call("do_read_mp3", data, package = "tuneR")
2: readMP3("jingle.mp3")
Possible actions:
1: abort (with core dump, if enabled)
2: normal R exit
3: exit R without saving workspace
4: exit R saving workspace
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On Mon, Oct 20, 2014 at 9:25 AM, Jeff Newmiller
<jdnew...@dcn.davis.ca.us> wrote:
> It is your responsibility (not mine) to simplify your example to the point
> where it is small, self-contained, and reproducible (see the footer of this
> message). In fact, doing so often highlights the issue to you before you
> share it. If any old downloadable mp3 file can be used to reproduce the
> problem then you would not need to share yours. (Note that this list strips
> off most attachments, so links are better anyway.)
>
> I suspect that one file read repeatedly might create the problem... if it
> doesn't, then that would be helpful to know. In any event, your "example" is
> missing the key element of repetition, so it is not hardly reproducible. The
> extra things you are doing to make it loop are likely to be important here.
> ---------------------------------------------------------------------------
> Jeff Newmiller The ..... ..... Go Live...
> DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live Go...
> Live: OO#.. Dead: OO#.. Playing
> Research Engineer (Solar/Batteries O.O#. #.O#. with
> /Software/Embedded Controllers) .OO#. .OO#. rocks...1k
> ---------------------------------------------------------------------------
> Sent from my phone. Please excuse my brevity.
>
> On October 20, 2014 9:05:45 AM PDT, Dimitri Liakhovitski
> <dimitri.liakhovit...@gmail.com> wrote:
>>Jeff,
>>
>>here is what I do with each file using library(tuneR):
>>
>>b<-readMP3("cairnomount.mp3")
>>myrange<-range(b@left)
>>write.table(myrange,"x myrange.txt",sep="\t")
>>
>>Would you like me to attach a bunch of large mp3 files?
>>I don't feel I have the right to clog people's inboxes with large
>>files.
>>
>>Thanks!
>>
>>
>>
>>On Mon, Oct 20, 2014 at 11:40 AM, Jeff Newmiller
>><jdnew...@dcn.davis.ca.us>
>>wrote:
>>
>>> You don't say what processing you are doing.. the answer to your
>>question
>>> is very likely there. To communicate effectively on this mailing
>>list,
>>> self-contained examples are needed. And in order to not corrupt the
>>example
>>> you will need to post in plain text.
>>>
>>---------------------------------------------------------------------------
>>> Jeff Newmiller The ..... ..... Go
>>Live...
>>> DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live
>>> Go...
>>> Live: OO#.. Dead: OO#..
>>Playing
>>> Research Engineer (Solar/Batteries O.O#. #.O#. with
>>> /Software/Embedded Controllers) .OO#. .OO#.
>>rocks...1k
>>>
>>---------------------------------------------------------------------------
>>> Sent from my phone. Please excuse my brevity.
>>>
>>> On October 20, 2014 8:30:21 AM PDT, Dimitri Liakhovitski <
>>> dimitri.liakhovit...@gmail.com> wrote:
>>> >Dear Rers,
>>> >
>>> >I am trying to run a for-loop in R.
>>> >During each iteration I read in an mp3 file and do some basic
>>> >processing.
>>> >If I do what I need to do for each file one by one - it works fine.
>>> >But once I start running a loop, it soon runs out of memory and
>>says:
>>> >can't
>>> >allocate a vector of size...
>>> >In each iteration of my loop I always overwrite the previously
>>created
>>> >object and do gc().
>>> >
>>> >Any hints on how to fight this?
>>> >
>>> >Thanks a lot!
>>> >
>>> > [[alternative HTML version deleted]]
>>> >
>>> >______________________________________________
>>> >R-help@r-project.org mailing list
>>> >https://stat.ethz.ch/mailman/listinfo/r-help
>>> >PLEASE do read the posting guide
>>> >http://www.R-project.org/posting-guide.html
>>> >and provide commented, minimal, self-contained, reproducible code.
>>>
>>>
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
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