Hi. Ihor.
>>>>> "Ihor" == Ihor Radchenko <yantar92@gmail.com> writes:


[...]


    Ihor> No. This will be against Org syntax.  You may advice `org-agenda-skip' function
    Ihor> let-binding `org-in-src-block-p' to #'ignore. At your own risk.

OK.

    Ihor> Also, we may remove this check in future in favour of more reliable
    Ihor> `org-element-context'. But not yet. That function is currently slower compared to
    Ihor> `org-in-src-block-p'.

Understood.


[...]


    Ihor> What do you mean? I thought that you were testing newest Org + emacs-28.

Yes. I am. I sent the 27 profiler file JIC.

    Ihor> Comparing the profiler reports, I also noticed that an additional overhead is coming from
    Ihor> the new library loaded in org-modules.  We have added 'ol-doi default module. You may
    Ihor> remove unused libraries from org-modules to speed up the initial startup (there will be no
    Ihor> difference in agenda rebuild times).

Good to know.


    Ihor> I also pushed a couple of new small optimizations, according to your profiler report. Can
    Ihor> you try again with the latest main?

Done. The time is now 32s.
The produced profiler report.