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Re: profiler-report seems to be missing data?
From: |
Michael Heerdegen |
Subject: |
Re: profiler-report seems to be missing data? |
Date: |
Thu, 16 Aug 2018 17:32:32 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) |
Eli Zaretskii <eliz@gnu.org> writes:
> In that case, perhaps the bindings done by let* take a lot of time
> because these are variables that become local when set, and you have
> many buffers in your session?
I think you are right - one doesn't even have to bind buffer local
variables to get a profiler report where 'let' takes a lot of time
though nothing inside 'let' seems to be responsible. If I profile this
for example:
#+begin_src emacs-lisp
(defun test ()
(interactive)
(mapcar (lambda (x)
(let ((y1 1)
(y2 2)
(y3 3))
(ignore y3)
(cons x (cons y1 y2))))
(number-sequence 1 1000000))
nil)
#+end_src
I get a similar profiler report. Obviously, the list mapped over is so
huge that simply binding the variables inside the loop takes a
significant part of time if the rest is fast (calling 'cons' in
the example, 'puthash' in the code we speak about). Things will be
different when running byte compiled code, I guess.
Michael.
- profiler-report seems to be missing data?, Charlie Andrews, 2018/08/15
- Re: profiler-report seems to be missing data?, Eli Zaretskii, 2018/08/15
- Re: profiler-report seems to be missing data?, Charlie Andrews, 2018/08/16
- Re: profiler-report seems to be missing data?, Eli Zaretskii, 2018/08/16
- Re: profiler-report seems to be missing data?,
Michael Heerdegen <=
- Re: profiler-report seems to be missing data?, Charlie Andrews, 2018/08/16
- Re: profiler-report seems to be missing data?, Eli Zaretskii, 2018/08/16
- Re: profiler-report seems to be missing data?, Charlie Andrews, 2018/08/16
- Re: profiler-report seems to be missing data?, Eli Zaretskii, 2018/08/16
- Re: profiler-report seems to be missing data?, Michael Heerdegen, 2018/08/16
- Re: profiler-report seems to be missing data?, Eli Zaretskii, 2018/08/16
- Re: profiler-report seems to be missing data?, Michael Heerdegen, 2018/08/16
Re: profiler-report seems to be missing data?, Stefan Monnier, 2018/08/16