Re: org-encrypt-entries is slow (was: org-crypt leaking data when encryption password is not entered twice (was: Please document the caching and its user options))

[Daniel Clemente <n142857@gmail.com>]

> > For instance, I don't use it because it adds around 5 seconds to each
> > saving of a large file. If it were instantaneous I would enable it.
> > With it disabled, this explains why I often find unencrypted sections
> > at the end of the day… I have to rely on myself to reencrypt them
> > again.
>
> Does it also happen when you use the latest Org mode version?
>

Yes, with today's build. It happens with an 11 Mb Org file which has
19721 headers (some of them reach level 13).
Here I enabled the profiler, added a space, saved (1 time only), and
reported CPU. It took around 5 seconds.

        4616  89% - command-execute
        4349  84%  - funcall-interactively
        4127  80%   - save-buffer
        4127  80%    - basic-save-buffer
        3931  76%     - run-hooks
        3931  76%      - org-encrypt-entries
        3931  76%       - org-scan-tags
        3931  76%        - org-element-cache-map
        1764  34%         - org-element--parse-to
         868  16%          - org-element--cache-put
         848  16%           - avl-tree-enter
         840  16%            - avl-tree--do-enter
         792  15%             - avl-tree--do-enter
         748  14%              - avl-tree--do-enter
         688  13%               - avl-tree--do-enter
         632  12%                - avl-tree--do-enter
         576  11%                 + avl-tree--do-enter
          52   1%                 + org-element--cache-compare
          56   1%                + org-element--cache-compare
          44   0%               + org-element--cache-compare
           4   0%                 avl-tree--node-branch
          44   0%              + org-element--cache-compare
          48   0%             + org-element--cache-compare
         580  11%          - #<native-comp-function
F616e6f6e796d6f75732d6c616d626461_anonymous_lambda_38>
         448   8%           + org-element-headline-parser
          20   0%           + org-element-section-parser
           4   0%             org-element-type
         136   2%          + org-element--cache-find
          20   0%            #<native-comp-function
F616e6f6e796d6f75732d6c616d626461_anonymous_lambda_12>
          16   0%            org-element-type
          12   0%            throw
           8   0%          + #<native-comp-function
F616e6f6e796d6f75732d6c616d626461_anonymous_lambda_15>
           8   0%          + #<native-comp-function
F616e6f6e796d6f75732d6c616d626461_anonymous_lambda_18>
           4   0%            org-element--cache-active-p
        1161  22%         - #<byte-code-function FF1>
         857  16%          - org-entry-get-with-inheritance
         797  15%           + org-element-lineage-map
           8   0%             org-element-at-point
           8   0%             make-closure
           8   0%             org--property-get-separator
           4   0%             mapconcat
         184   3%          + org-element--property
          16   0%          + org-get-tags
           8   0%          + org-encrypt-entry
           8   0%            org-element-begin
           4   0%            #<byte-code-function 99A>
           4   0%            functionp
         446   8%         + org-element-at-point
         200   3%           re-search-forward
         124   2%         + #<native-comp-function
F616e6f6e796d6f75732d6c616d626461_anonymous_lambda_66>
          44   0%         + #<native-comp-function
F616e6f6e796d6f75732d6c616d626461_anonymous_lambda_9>
          28   0%           match-data
          12   0%           make-closure
           8   0%         + org-element--property
           4   0%           #<native-comp-function
F616e6f6e796d6f75732d6c616d626461_anonymous_lambda_15>
           4   0%           org-element-type-p
           4   0%           #<native-comp-function
F616e6f6e796d6f75732d6c616d626461_anonymous_lambda_18>
           4   0%           throw
         196   3%     + basic-save-buffer-1