From: Alan Mackenzie <acm@muc.de>
To: Eli Zaretskii <eliz@gnu.org>
Cc: larsi@gnus.org, mattiase@acm.org, gregory@heytings.org,
monnier@iro.umontreal.ca, emacs-devel@gnu.org
Subject: Re: Time to merge scratch/correct-warning-pos into master, perhaps?
Date: Sun, 6 Feb 2022 18:09:30 +0000 [thread overview]
Message-ID: <YgAO2pyb9xTpeHeo@ACM> (raw)
In-Reply-To: <83ee4gyzrh.fsf@gnu.org>
Hello, Eli.
On Sun, Feb 06, 2022 at 13:56:34 +0200, Eli Zaretskii wrote:
> > Date: Sun, 6 Feb 2022 11:50:02 +0000
> > Cc: gregory@heytings.org, monnier@iro.umontreal.ca, mattiase@acm.org,
> > larsi@gnus.org, emacs-devel@gnu.org
> > From: Alan Mackenzie <acm@muc.de>
> > > So that would mean the slowdown of EQ is due to the cases where the
> > > objects are not-EQ?
> > Yes.
> > > Where are the numbers that show how much slower is the current EQ, for
> > > the case of EQ and not-EQ objects?
> > We don't have any such numbers. Is it even possible to measure this? On
> > earlier processors, we could have just counted up processor cycles used
> > for each instruction, but not any more.
> Yes, it's possible: use perf.
I've installed the user side part of perf on my machine. On reading the
tutorial (which is very difficult), it seems perf acts like a super
accurate benchmarking program, which measures program runs.
Maybe I misunderstand what you meant - but I can't see how perf is able
to report the cycles, etc., taken by a single execution of an instance of
EQ.
What exactly do we want to measure, here?
--
Alan Mackenzie (Nuremberg, Germany).
next prev parent reply other threads:[~2022-02-06 18:09 UTC|newest]
Thread overview: 150+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-15 18:15 Time to merge scratch/correct-warning-pos into master, perhaps? Alan Mackenzie
2022-01-15 18:24 ` Eli Zaretskii
2022-01-16 8:24 ` Lars Ingebrigtsen
2022-01-16 9:51 ` Po Lu
2022-01-16 13:50 ` Alan Mackenzie
2022-01-16 12:02 ` Lars Ingebrigtsen
2022-01-16 12:06 ` Po Lu
2022-01-16 13:12 ` Lars Ingebrigtsen
2022-01-16 14:02 ` Alan Mackenzie
2022-01-17 0:28 ` Po Lu
2022-01-17 3:28 ` Eli Zaretskii
2022-01-17 3:37 ` Po Lu
2022-01-16 14:00 ` Alan Mackenzie
2022-01-16 12:23 ` Eli Zaretskii
2022-01-16 12:26 ` Lars Ingebrigtsen
2022-01-16 12:36 ` Eli Zaretskii
2022-01-16 14:06 ` Alan Mackenzie
2022-01-16 14:11 ` Lars Ingebrigtsen
2022-01-16 14:21 ` Eli Zaretskii
2022-01-16 14:45 ` Alan Mackenzie
2022-01-16 15:04 ` Eli Zaretskii
2022-01-16 15:26 ` Alan Mackenzie
2022-01-16 15:43 ` Eli Zaretskii
2022-01-16 15:50 ` Alan Mackenzie
2022-01-16 13:47 ` Alan Mackenzie
2022-01-16 14:10 ` Lars Ingebrigtsen
2022-01-16 14:59 ` Stefan Monnier
2022-01-16 14:57 ` Stefan Monnier
2022-01-16 15:04 ` Lars Ingebrigtsen
2022-01-16 15:37 ` Alan Mackenzie
2022-01-16 15:50 ` Mattias Engdegård
2022-01-16 16:18 ` Alan Mackenzie
2022-01-16 16:52 ` Mattias Engdegård
2022-01-16 17:13 ` Stefan Monnier
2022-01-16 17:24 ` Mattias Engdegård
2022-01-22 12:23 ` Alan Mackenzie
2022-01-22 14:30 ` Lars Ingebrigtsen
2022-01-22 15:09 ` Alan Mackenzie
2022-01-22 15:26 ` Lars Ingebrigtsen
2022-01-22 15:36 ` Eli Zaretskii
2022-01-22 18:30 ` Alan Mackenzie
2022-01-23 12:45 ` Lars Ingebrigtsen
2022-01-22 16:06 ` Mattias Engdegård
2022-01-22 17:02 ` Gregory Heytings
2022-01-22 17:46 ` Eli Zaretskii
2022-01-22 18:01 ` Gregory Heytings
2022-01-22 18:12 ` Eli Zaretskii
2022-01-22 22:36 ` Gregory Heytings
2022-01-22 22:55 ` Alan Mackenzie
2022-01-23 6:16 ` Eli Zaretskii
2022-01-23 21:53 ` Gregory Heytings
2022-01-24 3:37 ` Eli Zaretskii
2022-01-24 15:20 ` Gregory Heytings
2022-01-24 16:47 ` Eli Zaretskii
2022-01-24 20:41 ` Gregory Heytings
2022-01-25 3:34 ` Eli Zaretskii
2022-01-25 8:59 ` Gregory Heytings
2022-01-25 11:27 ` Alan Mackenzie
2022-01-25 13:27 ` Stefan Monnier
2022-01-25 18:27 ` Alan Mackenzie
2022-01-25 19:26 ` Stefan Monnier
2022-01-25 20:58 ` Alan Mackenzie
2022-01-25 21:27 ` Gregory Heytings
2022-01-26 17:32 ` Alan Mackenzie
2022-01-26 18:59 ` Gregory Heytings
2022-01-26 20:26 ` Alan Mackenzie
2022-01-25 22:11 ` Stefan Monnier
2022-01-25 22:42 ` Óscar Fuentes
2022-01-26 1:08 ` Po Lu
2022-01-26 16:56 ` chad
2022-01-26 17:38 ` Eli Zaretskii
2022-01-26 17:58 ` chad
2022-01-26 18:46 ` Gregory Heytings
2022-01-26 19:47 ` Stefan Monnier
2022-01-26 19:59 ` Alan Mackenzie
2022-01-25 21:18 ` Gregory Heytings
2022-01-25 21:38 ` Gregory Heytings
2022-01-25 22:21 ` Stefan Monnier
2022-01-26 18:36 ` Gregory Heytings
2022-02-04 0:11 ` Gregory Heytings
2022-02-04 11:57 ` Alan Mackenzie
2022-02-04 12:06 ` Eli Zaretskii
2022-02-04 18:31 ` Alan Mackenzie
2022-02-04 18:54 ` Eli Zaretskii
2022-02-04 19:33 ` Alan Mackenzie
2022-02-04 19:46 ` Eli Zaretskii
2022-02-04 21:24 ` Alan Mackenzie
2022-02-04 22:24 ` Stefan Monnier
2022-02-04 22:30 ` Stefan Monnier
2022-02-05 7:28 ` Eli Zaretskii
2022-02-05 18:04 ` Stefan Monnier
2022-02-05 18:31 ` Eli Zaretskii
2022-02-05 8:17 ` Eli Zaretskii
2022-02-06 11:50 ` Alan Mackenzie
2022-02-06 11:56 ` Eli Zaretskii
2022-02-06 18:09 ` Alan Mackenzie [this message]
2022-02-06 18:39 ` Eli Zaretskii
2022-02-19 16:42 ` Alan Mackenzie
2022-02-19 17:02 ` Eli Zaretskii
2022-02-19 17:43 ` David Engster
2022-02-19 22:10 ` Alan Mackenzie
2022-02-20 5:35 ` David Engster
2022-02-20 19:45 ` Alan Mackenzie
2022-02-20 20:37 ` Stefan Monnier
2022-02-20 20:56 ` Alan Mackenzie
2022-02-20 23:02 ` Stefan Monnier
2022-02-21 0:22 ` Óscar Fuentes
2022-02-21 3:31 ` Eli Zaretskii
2022-02-21 4:04 ` Óscar Fuentes
2022-02-21 12:15 ` Eli Zaretskii
2022-02-21 14:55 ` Óscar Fuentes
2022-02-21 3:29 ` Eli Zaretskii
2022-02-19 19:01 ` Stefan Monnier
2022-02-19 19:30 ` Eli Zaretskii
2022-02-19 22:03 ` Alan Mackenzie
2022-02-25 22:29 ` Alan Mackenzie
2022-02-06 18:40 ` Eli Zaretskii
2022-02-06 19:03 ` Eli Zaretskii
2022-02-07 17:36 ` Andrea Corallo
2022-02-05 6:08 ` Lars Ingebrigtsen
2022-02-05 11:42 ` Alan Mackenzie
2022-02-05 21:31 ` Lars Ingebrigtsen
2022-02-06 7:02 ` Eli Zaretskii
2022-02-06 11:38 ` Alan Mackenzie
2022-02-06 23:14 ` Lars Ingebrigtsen
2022-01-25 21:15 ` Gregory Heytings
2022-01-25 21:30 ` Andrea Corallo
2022-01-26 18:43 ` Gregory Heytings
2022-01-26 21:04 ` Andrea Corallo
[not found] ` <b0265c41-7ead-4913-667-d0e76a35b3ba@heytings.org>
2022-01-25 21:16 ` Gregory Heytings
2022-01-25 12:26 ` Eli Zaretskii
2022-01-26 18:41 ` Gregory Heytings
2022-01-26 18:59 ` Eli Zaretskii
2022-01-26 19:14 ` Stefan Monnier
2022-01-26 19:32 ` Eli Zaretskii
2022-01-26 19:34 ` Alan Mackenzie
2022-01-22 18:35 ` Alan Mackenzie
2022-01-22 18:45 ` Gregory Heytings
2022-01-22 18:50 ` Eli Zaretskii
2022-01-22 20:07 ` Gregory Heytings
2022-01-23 5:32 ` Eli Zaretskii
2022-01-23 21:44 ` Gregory Heytings
2022-01-15 22:57 ` Stefan Monnier
2022-01-16 0:27 ` Brahimi Saifullah
2022-01-16 14:53 ` Alan Mackenzie
2022-01-16 16:45 ` Brahimi Saifullah
2022-01-22 11:41 ` Alan Mackenzie
2022-01-22 23:16 ` Brahimi Saifullah
2022-01-23 14:09 ` Alan Mackenzie
2022-01-17 9:38 ` Andrea Corallo
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