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Re: [O] Tangling takes long - profiling and calling R


From: Rainer M Krug
Subject: Re: [O] Tangling takes long - profiling and calling R
Date: Tue, 16 Jun 2015 12:29:50 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (darwin)

"Charles C. Berry" <address@hidden> writes:

> On Mon, 15 Jun 2015, Rainer M Krug wrote:
>
>> Hi
>>
>> I have a relatively large file with
>> about 200 =source blocks (R) to be tangled to get an R package. But the
>> tangling takes about 20 seconds.
>>
>> Profiling the tangling showed that the call to ~mapcar~ in
>> ~org-babel-params-from-properties~ takes about 40% of the execution time
>> (see profiler excerpt below). Is there anything one can do to make this
>> faster?
>>
>> In addition to this, I observed there is some interaction with ESS when
>> tangling, which in my understanding is not necessary. I get messages
>> like
>>
>> ,----
>> | ...
>> | Wrote /Users/rainerkrug/Documents/Projects/EnergyBalance/.Rbuildignore
>> | Wrote /Users/rainerkrug/Documents/Projects/EnergyBalance/tests/wpLELTest.R
>> | You are developing: (EnergyBalance)
>> | Wrote 
>> /Users/rainerkrug/Documents/Projects/EnergyBalance/R/plotwpLELFitListParDistr.R
>> | You are developing: (EnergyBalance)
>> | ...
>> `----
>>
>> where the messages "You are developing: (EnergyBalance)" come from
>> ESS. Is this to be expected that R is called for some blocks, but not
>> for others, when tangling?
>
> The major mode is invoked when tangling, if possible.
>
> This enables comments to be rendered. See the docstring for
> `org-babel-spec-to-string'.
>
> HTH,

Yes - thanks,

Rainer

>
> Chuck

-- 
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, 
UCT), Dipl. Phys. (Germany)

Centre of Excellence for Invasion Biology
Stellenbosch University
South Africa

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