Re: SOLVED: too many open files

[Hans Hagen <pragma@wxs.nl>]

On 6/19/2016 9:47 PM, Mojca Miklavec wrote:
> Hi,
>
> I found an old thread while fighting with the problem of
>     luatex I/O Error: Couldn't open file 'foo.pdf': Too many open files.
>
> On 15 August 2013 at 17:48, Henning Hraban Ramm wrote:
>> Hi again,
>>
>> in my current songbook project I use t-filter with LilyPond as shown in http://wiki.contextgarden.net/LilyPond with latest beta MkIV on OSX.
>>
>> Every line (system) of notes is included as its own PDF to leave the page breaking to ConTeXt. But since I have some hundred songs with each a few lines, it sums up...
>>
>> I guess ConTeXt keeps every externalfigure open, since I get this error:
>>
>> pages           > flushing realpage 70, userpage 70
>> (c_helpmesee.tex
>> structure       > sectioning > TitelKlein @ level 2 : 0.83 -> Help Me See
>> GNU LilyPond 2.16.2
>> ERROR: In procedure open-file:
>> ERROR: Too many open files: "/Applications/music/LilyPond.app/Contents/Resources/bin/../share/guile/1.8/ice-9/r4rs.scm"
>> LILYPOND        > name='lilytemp/prd_alle-temp-lilypond-c_helpmesee.pdf'
>> LILYPOND        > including system no.1
>> LILYPOND        > including system no.2
>> LILYPOND        > including system no.3
>> LILYPOND        > including system no.4
>> LILYPOND        > including system no.5
>> ) (c_hochaufdem.tex </Users/hraban/workspace/liederheft/lilytemp/prd_alle-temp-lilypond-c_helpmesee-1.pdf> </Users/hraban/workspace/liederheft/lilytemp/prd_alle-temp-lilypond-c_helpmesee-2.pdf> </Users/hraban/workspace/liederheft/lilytemp/prd_alle-temp-lilypond-c_helpmesee-3.pdf> </Users/hraban/workspace/liederheft/lilytemp/prd_alle-temp-lilypond-c_helpmesee-4.pdfI/O Error: Couldn't open file '/Users/hraban/workspace/liederheft/lilytemp/prd_alle-temp-lilypond-c_helpmesee-4.pdf': Too many open files.
>>
>> !LuaTeX error: xpdf: reading PDF image failed
>>  ==> Fatal error occurred, no output PDF file produced!
>>
>>
>> It works with songbook excerpts (some 30 songs). I don't understand if the error is really from LilyPond or from LuaTeX (I guess the former), and how I would be able to increase the number of possible files (in bash on OSX 10.8.4). So probably it's more a general Unix question than a ConTeXt one, but anyway...
>>
>> ANALYSIS:
>> $ ulimit -n
>> 256
>> $ sysctl kern.maxfiles
>> kern.maxfiles: 12288
>> $ sysctl kern.maxfilesperproc
>> kern.maxfilesperproc: 10240
>>
>> SOLUTION:
>> $ ulimit -S -n 2048
>>
>> (Properly describing a problem often helps to solve it. I send this for the records, in case someone runs into the same.)
>
> Running "ulimit -S -n 2048" in fact solved the problem for me, but I
> wonder if there is any better solution. (I might even have more than
> 256 files open in my text editor and that one doesn't complain.)
>
> Is it possible to politely ask LuaTeX to close the files after reading them?

maybe object=no helps



-- 

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                                           Hans Hagen | PRAGMA ADE
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