From: Jonny Grant <jg@jguk.org>
To: Michael Kerrisk <mtk.manpages@gmail.com>,
linux-man <linux-man@vger.kernel.org>
Subject: Re: core man page %e
Date: Mon, 1 Jun 2020 11:21:07 +0100 [thread overview]
Message-ID: <99a02979-3d47-6ef8-c619-00d9115321ec@jguk.org> (raw)
In-Reply-To: <ae5293ba-17dd-fd6d-54b0-312a008e3167@jguk.org>
Hi Mtk,
BTW, if I add "%P-%e-%s.core" every core starts with the same
"P1000-"
The man page shows:
%P PID of dumped process, as seen in the initial PID namespace
(since Linux 3.12)
Do you see similar? I was only needing something to make the filename unique, so %t is enough.
Cheers, Jonny
On 30/05/2020 11:39, Jonny Grant wrote:
> Hello mtk
>
> I've noticed "%e-%s.core" often gives something other than the filename and the name is truncated to 16 bytes:-
>
> ThreadPoolServi-5.core
> Chrome_InProcUt-5.core
>
> This was set:
> sysctl -w kernel.core_pattern="%e-%s.core"
>
>
>
> In multithreaded applications it looks like %e is giving something other than the filename, perhaps a thread entry-point
> symbol name.
>
> https://www.man7.org/linux/man-pages/man5/core.5.html
>
> %e executable filename (without path prefix)
>
> Could this be updated to:
>
> %e executable filename or thread name truncated to 16 bytes
>
> Cheers, Jonny
next prev parent reply other threads:[~2020-06-01 10:21 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-30 10:39 core man page %e Jonny Grant
2020-06-01 10:21 ` Jonny Grant [this message]
2020-06-09 8:25 ` Michael Kerrisk (man-pages)
2020-06-09 11:00 ` Jonny Grant
2020-06-09 10:18 ` Michael Kerrisk (man-pages)
2020-06-09 11:35 ` Jonny Grant
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