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?

Version info:
,----
| Org-mode version 8.3beta (release_8.3beta-1209-gc532ff @ /Users/rainerkrug/.emacs.d/org-mode/lisp/)
| GNU Emacs 24.5.1 (x86_64-apple-darwin14.3.0, Carbon Version 157 AppKit 1347.57) of 2015-04-13 on Rainers-MacBook-Pro.local
`----

Cheers,

Rainer

,----
| - time-execute                                                4950  84%
|  - call-interactively                                            4950  84%
|   - org-babel-tangle                                             4828  82%
|    - org-babel-tangle-collect-blocks                             2728  46%
|     - org-babel-tangle-single-block                              1363  23%
|      - org-babel-get-src-block-info                              1304  22%
|       - org-babel-parse-src-block-match                          1210  20%
|###     - org-babel-params-from-properties                        1193  20%
|         + mapcar                                                 1144  19%
|         + org-entry-get                                            33   0%
|         + org-babel-parse-header-arguments                         12   0%
|         + org-babel-combine-header-arg-lists                        4   0%
|        + org-babel-parse-header-arguments                           3   0%
|        + apply                                                      2   0%
|          generate-new-buffer                                        1   0%
|        + org-unescape-code-in-string                                1   0%
|          byte-code                                                  1   0%
|       + org-babel-generate-file-param                              86   1%
|       + org-babel-process-params                                    2   0%
|         org-babel-where-is-src-block-head                           1   0%
|      + org-store-link                                              36   0%
|        line-number-at-pos                                          17   0%
|      + byte-code                                                    2   0%
|        generate-new-buffer                                          1   0%
|     - org-babel-get-src-block-info                               1334  22%
|      - org-babel-parse-src-block-match                           1235  21%
|####   - org-babel-params-from-properties                         1212  20%
|        + mapcar                                                  1163  19%
|        + org-entry-get                                             30   0%
|        + org-babel-parse-header-arguments                          12   0%
|        + org-babel-combine-header-arg-lists                         7   0%
|       + org-babel-parse-header-arguments                            7   0%
|       + apply                                                       4   0%
|       + org-unescape-code-in-string                                 2   0%
|         generate-new-buffer                                         1   0%
|      + org-babel-generate-file-param                               89   1%
|        org-babel-where-is-src-block-head                            2   0%
|     + org-in-commented-heading-p                                    8   0%
|     + org-babel-active-location-p                                   4   0%
|     + byte-code                                                     2   0%
|    + mapc                                                        2098  35%
|    + run-hooks                                                      1   0%
|   + smex                                                          122   2%
| + ...                                                             912  15%
| + flyspell-post-command-hook                                        4   0%
| + redisplay_internal (C function)                                   3   0%
| + timer-event-handler                                               3   0%
`----


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

Centre of Excellence for Invasion Biology
Stellenbosch University
South Africa

Tel :       +33 - (0)9 53 10 27 44
Cell:       +33 - (0)6 85 62 59 98
Fax :       +33 - (0)9 58 10 27 44

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email:      Rainer@krugs.de

Skype:      RMkrug

PGP: 0x0F52F982