From: "João Távora" <joaotavora@gmail.com>
To: Daniel Pettersson <daniel@dpettersson.net>
Cc: 69241@debbugs.gnu.org, Eli Zaretskii <eliz@gnu.org>
Subject: bug#69241: Fixed patch issues
Date: Sun, 10 Mar 2024 14:41:07 +0000 [thread overview]
Message-ID: <CALDnm52pPeqdsUp9YzZkbLyrPw3yTfxNN0kHYzuBVNSzi3xEQA@mail.gmail.com> (raw)
In-Reply-To: <m2bk7mjh4q.fsf@dpettersson.net>
On Sun, Mar 10, 2024 at 2:28 PM Daniel Pettersson
<daniel@dpettersson.net> wrote:
> As I have previously stated I am willing to take on the maintainer role
> for Jsonrpc.
Thank you Daniel. It'll be in very good hands.
> > + ;; `timer-activate' orders timers by time, which is an
> > + ;; very expensive operation when jsonrpc-mqueue is large,
> > + ;; therefore the time object is reused for each timer
> > + ;; created.
>
> I am interested in what both of you think about relying on undocumented
> behavior.
>
> To grasp the scope of this issue, an adapter server sent 50 000
> messages. With `read-process-output-max' set to the platforms max, each
> of those messages where placed on `timer-list' in the same call to
> jsonrpc's filter function, which then had to be sorted as O(N^2)
> (calls to timer--time-less-p).
>
> Which makes Jsonrpc unusable for that particular server.
I think your analysis is sound, Daniel. As you have noticed the run-at-time 0
is not to actually use a timer, but just to get a call that is independent
from the current call stack which may be nested because of the use case
of bug#67945.
The calls must be processed in the order of the queue though, but in
theory that shouldn't lead to O(N^2) if a suitable technique is found (perhaps
different from (run-at-time 0)).
Finally 50.000 is a gigantic amount -- are all of these essential? Can't the
server coalesce this data into fewer messages within the DAP protocol?
João
next prev parent reply other threads:[~2024-03-10 14:41 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-18 1:53 bug#69241: [PATCH] Jsonrpc: improve performance of process filter function Daniel Pettersson
2024-02-28 12:22 ` bug#69241: Fixed patch issues Daniel Pettersson
2024-03-09 8:55 ` Eli Zaretskii
2024-03-09 8:56 ` Eli Zaretskii
2024-03-09 10:56 ` João Távora
2024-03-10 14:28 ` Daniel Pettersson
2024-03-10 14:41 ` João Távora [this message]
2024-03-11 9:44 ` Daniel Pettersson
2024-03-11 13:11 ` Eli Zaretskii
2024-03-11 14:48 ` Daniel Pettersson
2024-03-11 16:27 ` Eli Zaretskii
2024-03-11 19:03 ` Daniel Pettersson
2024-03-11 19:18 ` Eli Zaretskii
2024-03-11 19:39 ` Daniel Pettersson
2024-03-12 3:27 ` Eli Zaretskii
2024-03-12 13:31 ` Eli Zaretskii
2024-03-12 14:34 ` Daniel Pettersson
2024-03-12 15:00 ` Eli Zaretskii
2024-03-12 13:28 ` Eli Zaretskii
2024-03-12 14:33 ` Daniel Pettersson
2024-03-10 16:46 ` Eli Zaretskii
2024-03-10 20:05 ` Daniel Pettersson
2024-03-10 23:30 ` Daniel Pettersson
2024-03-11 12:24 ` Eli Zaretskii
2024-03-11 12:38 ` Daniel Pettersson
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