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From: "qinzhao at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/111523] Unexpected performance regression with -ftrivial-auto-var-init=zero for e.g. systemctl unmask
Date: Wed, 13 Mar 2024 14:01:56 +0000	[thread overview]
Message-ID: <bug-111523-4-ibXNwIXJX9@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-111523-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111523

--- Comment #10 from qinzhao at gcc dot gnu.org ---
(In reply to Andrew Pinski from comment #9)

> Anways systemd has now changed the buffer to 256 which is much much smaller
> and for most calls enough in size before needing to reallocate the buffer
> that it has now become fast.
> 
> Anyways -ftrivial-auto-var-init=zero just exposed a performance (stack size)
> issue with already existing issue inside the systemd code. A good thing
> really. 
> 
> So closing as moved.

thanks a lot for the analysis and the solution of this performance issue.
really appreciate.

      parent reply	other threads:[~2024-03-13 14:01 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-21 16:40 [Bug middle-end/111523] New: " hp at gcc dot gnu.org
2023-09-21 16:49 ` [Bug middle-end/111523] " sjames at gcc dot gnu.org
2024-02-29 19:19 ` qinzhao at gcc dot gnu.org
2024-03-01  0:12 ` sjames at gcc dot gnu.org
2024-03-01  1:25 ` pinskia at gcc dot gnu.org
2024-03-01  5:15 ` pinskia at gcc dot gnu.org
2024-03-01  7:57 ` pinskia at gcc dot gnu.org
2024-03-01  8:23 ` pinskia at gcc dot gnu.org
2024-03-01  8:38 ` pinskia at gcc dot gnu.org
2024-03-07  6:45 ` pinskia at gcc dot gnu.org
2024-03-13 14:01 ` qinzhao at gcc dot gnu.org [this message]

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