From: "Gerd Möllmann" <gerd.moellmann@gmail.com>
To: Helmut Eller <eller.helmut@gmail.com>
Cc: Eli Zaretskii <eliz@gnu.org>,
Ihor Radchenko <yantar92@posteo.net>,
emacs-devel@gnu.org
Subject: Re: MPS: profiler
Date: Fri, 21 Jun 2024 09:43:07 +0200 [thread overview]
Message-ID: <m2v8224u7o.fsf@pro2.fritz.box> (raw)
In-Reply-To: <87tthm3gq2.fsf@gmail.com> (Helmut Eller's message of "Fri, 21 Jun 2024 09:19:49 +0200")
Helmut Eller <eller.helmut@gmail.com> writes:
> On Fri, Jun 21 2024, Gerd Möllmann wrote:
>
>> Eli Zaretskii <eliz@gnu.org> writes:
>>
>>> Also, can 'static struct profiler_log cpu', which is being worked on
>>> by record_backtrace, be affected by MPS in any way?
>>
>> I'd guess that just "touching" Lisp objects in the SIGPROF handler can
>> be problematic because these objects themselves can be behind a barrier,
>> either the same that MPS is currently working on when it got interrupted
>> or another one.
>
> Perhaps dflt_scan should block SIGPROF while it is running. Or perhaps
> dflt_scan should set some global flag while it running so that the
> profiler knows that it's too dangerous to touch anything.
I kind of doubt that's sufficient because there are time windows in MPS
itself where dflt_scan is not running, and it maybe doing dangerous
things. There is no guarantee I'd say.
> Any better ideas?
>
> I can use this command to reproduce the problem:
>
> run -Q -batch -eval '(progn
> (defvar *baz* nil)
> (defun bar (len)
> (let ((data (make-list len nil)))
> (setq *baz* (lambda () (bar len) data))))
> (defun foo ()
> (bar 1000)
> (dotimes (_ 10000)
> (funcall *baz*)))
> (profiler-start (quote cpu))
> (foo))'
Could we park or clamp the arena while profiling?
next prev parent reply other threads:[~2024-06-21 7:43 UTC|newest]
Thread overview: 106+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-20 19:25 MPS: profiler Ihor Radchenko
2024-06-20 19:40 ` Eli Zaretskii
2024-06-20 19:48 ` Ihor Radchenko
2024-06-20 19:58 ` Gerd Möllmann
2024-06-20 20:29 ` Ihor Radchenko
2024-06-21 5:57 ` Gerd Möllmann
2024-06-21 6:17 ` Eli Zaretskii
2024-06-21 6:54 ` Gerd Möllmann
2024-06-21 7:16 ` Eli Zaretskii
2024-06-21 7:32 ` Gerd Möllmann
2024-06-21 7:19 ` Helmut Eller
2024-06-21 7:36 ` Ihor Radchenko
2024-06-21 7:44 ` Helmut Eller
2024-06-21 7:51 ` Gerd Möllmann
2024-06-21 8:21 ` Helmut Eller
2024-06-21 8:31 ` Gerd Möllmann
2024-06-21 10:45 ` Eli Zaretskii
2024-06-21 11:47 ` Gerd Möllmann
2024-06-21 12:01 ` Helmut Eller
2024-06-21 12:09 ` Ihor Radchenko
2024-06-21 12:42 ` Helmut Eller
2024-06-21 12:51 ` Ihor Radchenko
2024-06-21 14:49 ` MPS make-thread (was: MPS: profiler) Helmut Eller
2024-06-21 15:20 ` MPS make-thread Gerd Möllmann
2024-06-21 15:33 ` Gerd Möllmann
2024-06-21 15:42 ` Helmut Eller
2024-06-21 16:46 ` Gerd Möllmann
2024-06-21 18:31 ` Gerd Möllmann
2024-06-21 19:58 ` Ihor Radchenko
2024-06-21 20:10 ` Gerd Möllmann
2024-06-22 18:52 ` Ihor Radchenko
2024-06-22 19:17 ` Eli Zaretskii
2024-06-23 3:18 ` Gerd Möllmann
2024-06-23 4:54 ` Gerd Möllmann
2024-06-23 6:19 ` Eli Zaretskii
2024-06-23 5:53 ` Eli Zaretskii
2024-06-23 6:45 ` Gerd Möllmann
2024-06-23 8:53 ` Eli Zaretskii
2024-06-23 9:36 ` Gerd Möllmann
2024-06-23 10:21 ` Gerd Möllmann
2024-06-23 10:27 ` Gerd Möllmann
2024-06-23 13:19 ` Eli Zaretskii
2024-06-23 14:16 ` Gerd Möllmann
2024-06-26 11:20 ` Ihor Radchenko
2024-06-26 11:25 ` Gerd Möllmann
2024-06-22 19:26 ` Gerd Möllmann
2024-06-22 6:29 ` Eli Zaretskii
2024-06-22 18:53 ` Ihor Radchenko
2024-06-22 19:04 ` Eli Zaretskii
2024-06-22 19:17 ` Ihor Radchenko
2024-06-22 18:13 ` Helmut Eller
2024-06-22 18:31 ` Gerd Möllmann
2024-06-25 18:42 ` MPS native subrs (was: MPS make-thread) Helmut Eller via Emacs development discussions.
2024-06-25 20:10 ` MPS native subrs Gerd Möllmann
2024-06-25 20:48 ` Gerd Möllmann
2024-06-26 6:31 ` Helmut Eller
2024-06-26 7:00 ` Gerd Möllmann
2024-06-26 13:45 ` Eli Zaretskii
2024-06-26 14:18 ` Gerd Möllmann
2024-06-26 15:15 ` Helmut Eller
2024-06-26 17:12 ` Gerd Möllmann
2024-06-26 13:30 ` Eli Zaretskii
2024-06-26 13:34 ` Eli Zaretskii
2024-06-26 4:55 ` Gerd Möllmann
2024-06-26 13:36 ` Eli Zaretskii
2024-06-26 13:26 ` MPS native subrs (was: MPS make-thread) Eli Zaretskii
2024-06-26 14:41 ` MPS native subrs Andrea Corallo
2024-06-21 12:43 ` MPS: profiler Gerd Möllmann
2024-06-21 16:11 ` Ihor Radchenko
2024-06-21 12:41 ` Gerd Möllmann
2024-06-21 14:10 ` Eli Zaretskii
2024-06-21 16:09 ` Ihor Radchenko
2024-06-21 16:22 ` Gerd Möllmann
2024-06-21 18:51 ` Ihor Radchenko
2024-06-21 18:58 ` Gerd Möllmann
2024-06-21 19:23 ` Ihor Radchenko
2024-06-21 19:50 ` Gerd Möllmann
2024-06-21 20:02 ` Ihor Radchenko
2024-06-22 6:37 ` Eli Zaretskii
2024-06-21 7:43 ` Gerd Möllmann [this message]
2024-06-21 7:50 ` Ihor Radchenko
2024-06-21 7:53 ` Gerd Möllmann
2024-06-21 10:39 ` Eli Zaretskii
2024-06-21 10:57 ` Ihor Radchenko
2024-06-21 10:58 ` Eli Zaretskii
2024-06-21 11:20 ` Ihor Radchenko
2024-06-21 11:29 ` Eli Zaretskii
2024-06-21 11:33 ` Gerd Möllmann
2024-06-21 19:55 ` Dmitry Gutov
2024-06-21 16:12 ` Ihor Radchenko
2024-06-21 18:48 ` Eli Zaretskii
2024-06-21 10:49 ` Pip Cet
2024-06-21 10:56 ` Eli Zaretskii
2024-06-21 5:56 ` Eli Zaretskii
2024-06-21 6:14 ` Ihor Radchenko
2024-06-20 19:50 ` Gerd Möllmann
2024-06-20 20:02 ` Ihor Radchenko
2024-06-21 5:58 ` Eli Zaretskii
2024-06-21 6:16 ` Ihor Radchenko
2024-06-21 8:23 ` Pip Cet
2024-06-21 8:43 ` Ihor Radchenko
2024-06-21 8:50 ` Gerd Möllmann
2024-06-21 10:43 ` Eli Zaretskii
2024-06-21 11:00 ` Pip Cet
2024-06-21 11:09 ` Eli Zaretskii
2024-06-21 11:39 ` Gerd Möllmann
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=m2v8224u7o.fsf@pro2.fritz.box \
--to=gerd.moellmann@gmail.com \
--cc=eliz@gnu.org \
--cc=eller.helmut@gmail.com \
--cc=emacs-devel@gnu.org \
--cc=yantar92@posteo.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this external index
https://git.savannah.gnu.org/cgit/emacs.git
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.