From: Eli Zaretskii <eliz@gnu.org>
To: "ISHIKAWA,chiaki" <ishikawa@yk.rim.or.jp>
Cc: chiaki.ishikawa@ubin.jp, larsi@gnus.org, 39413@debbugs.gnu.org,
npostavs@gmail.com
Subject: bug#39413: 26.2; Emacs gets hung
Date: Mon, 16 Aug 2021 14:35:29 +0300 [thread overview]
Message-ID: <83v9458vwe.fsf@gnu.org> (raw)
In-Reply-To: <e384638a-8340-b615-778a-877ba8708e85@yk.rim.or.jp> (ishikawa@yk.rim.or.jp)
> Cc: larsi@gnus.org, npostavs@gmail.com, 39413@debbugs.gnu.org,
> chiaki.ishikawa@ubin.jp
> From: "ISHIKAWA,chiaki" <ishikawa@yk.rim.or.jp>
> Date: Mon, 16 Aug 2021 08:27:01 +0900
>
> But if you look slightly above, you will notice CPU core #4 is used 100%
> (!).
> That is emacs process. No other process is running that earnestly at
> that moment.
If we believe everything these tools show us, maybe. But those tools
suffer from the same problem Emacs does on a busy system: the tool
itself might not get CPU to update its data, so you actually see a
snapshot of what it saw last time it did get CPU.
> PS: I found profiler-cpu-* functions, but I don't think it is wise to
> run them during GC since they seem to allocate vector tables. However,
> taking a snapshot of strack trace every now and then during GC seems
> attractive for my investigation to figure out WHERE in GC, the excessive
> time is spent.
Emacs built-in profiling will not help us here, because it cannot
profile below Lisp primitives.
next prev parent reply other threads:[~2021-08-16 11:35 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-04 9:32 bug#39413: 26.2; Emacs gets hung chiaki-ishikawa-thunderbird-account
2020-02-04 15:33 ` Eli Zaretskii
2020-02-05 1:11 ` chiaki-ishikawa-thunderbird-account
2020-02-21 17:27 ` Noam Postavsky
2020-02-22 17:53 ` chiaki-ishikawa-thunderbird-account
2020-04-28 21:36 ` ISHIKAWA,chiaki
2020-04-29 6:55 ` Eli Zaretskii
2020-04-30 2:45 ` chiaki-ishikawa-thunderbird-account
2020-05-20 4:31 ` chiaki-ishikawa-thunderbird-account
2020-05-25 12:15 ` Noam Postavsky
2020-05-25 15:50 ` chiaki-ishikawa-thunderbird-account
2020-06-08 8:17 ` chiaki-ishikawa-thunderbird-account
2021-08-10 16:09 ` Lars Ingebrigtsen
2021-08-11 1:08 ` ISHIKAWA,chiaki
2021-08-11 6:07 ` ISHIKAWA,chiaki
2021-08-11 7:22 ` ISHIKAWA,chiaki
2021-08-11 11:14 ` Lars Ingebrigtsen
2021-08-11 13:46 ` ISHIKAWA,chiaki
2021-08-11 11:47 ` Eli Zaretskii
2021-08-11 13:41 ` ISHIKAWA,chiaki
2021-08-12 7:10 ` Eli Zaretskii
2021-08-15 23:27 ` ISHIKAWA,chiaki
2021-08-16 0:20 ` ISHIKAWA,chiaki
2021-08-16 11:35 ` Eli Zaretskii [this message]
2021-08-20 1:56 ` ISHIKAWA,chiaki
2021-09-17 14:49 ` Lars Ingebrigtsen
2021-10-18 9:00 ` Lars Ingebrigtsen
2021-10-19 7:04 ` ISHIKAWA,chiaki
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