From: Adam Porter <adam@alphapapa.net>
To: emacs-orgmode@gnu.org
Subject: Re: How to make agenda generation faster
Date: Tue, 09 Oct 2018 01:37:46 -0500 [thread overview]
Message-ID: <87o9c34ocl.fsf@alphapapa.net> (raw)
In-Reply-To: 87h8hy1ho5.fsf@mbork.pl
Hi Marcin,
My feedback is: there be dragons. ;) The Agenda code is very
complicated and hard to follow, and it's hard to optimize something that
is hard to understand.
In the long run, to get significant speed improvements, I think it may
be necessary to reimplement the Agenda. However, due to the nature of
it (i.e. regexp searches through buffers to find entries), I don't know
how much faster it can be made. I don't mean that I doubt it can be--I
mean that, truly, I don't know, because it's hard to understand the flow
of the code.
I think that it is already fairly well optimized, given its limitations.
However, an example of a potential improvement would be to refactor it
to work with lexical-binding enabled (which didn't exist when it was
first created); I can't say how much of an improvement it would make,
but my understanding is that code that runs with lexical-binding enabled
is generally faster. But doing that would be a non-trivial project, I
think, requiring the fixing of many inevitable regressions in the
process.
If you haven't seen them already, you may find my org-ql and
org-ql-agenda code useful. org-ql-agenda presents an Agenda-like
buffer. N.B. It does *not* implement most of the Agenda features, but
it does emulate an Org Agenda buffer by setting the appropriate text
properties on entries and formatting them in a similar way.
It's built on org-ql, which provides per-buffer query caching, which
means that generating an org-ql-agenda view for Org buffers that haven't
changed since the last view was generated is very fast. It's also
written in a more functional way, which I think is easier to follow and
modify. Performance of uncached queries/buffers depends on the
query--some are relatively fast, while others are slower than the "real"
Org Agenda. I think there is significant potential for optimizations,
and I'm hoping to implement some in the future. Your feedback would be
appreciated!
https://github.com/alphapapa/org-ql
next prev parent reply other threads:[~2018-10-09 6:38 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-07 4:53 How to make agenda generation faster Marcin Borkowski
2018-10-08 7:20 ` Michael Welle
2018-10-10 20:03 ` Marcin Borkowski
2018-10-10 21:01 ` Samuel Wales
2018-10-11 6:48 ` Michael Welle
2018-10-11 8:48 ` Marcin Borkowski
2018-10-11 19:59 ` Samuel Wales
2018-10-14 8:51 ` Marcin Borkowski
2018-10-09 6:37 ` Adam Porter [this message]
2018-10-09 16:11 ` Nicolas Goaziou
2018-10-10 20:01 ` Marcin Borkowski
2018-10-16 20:35 ` Adam Porter
2018-10-17 7:04 ` Ihor Radchenko
2018-10-17 13:01 ` Nicolas Goaziou
2018-10-17 19:12 ` Adam Porter
2018-10-18 22:48 ` Nicolas Goaziou
2018-10-19 0:04 ` stardiviner
2018-10-20 2:12 ` Adam Porter
2018-10-20 8:12 ` Nicolas Goaziou
2018-10-10 19:59 ` Marcin Borkowski
2018-10-09 11:47 ` Julius Dittmar
2018-10-10 20:03 ` Marcin Borkowski
2018-10-11 6:40 ` Michael Welle
2018-10-14 7:42 ` Marcin Borkowski
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