From: Peter Zijlstra <peterz@infradead.org>
To: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>,
Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
Petr Mladek <pmladek@suse.com>,
Steven Rostedt <rostedt@goodmis.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org
Subject: Re: [RFC][PATCH] printk: increase devkmsg write() ratelimit
Date: Tue, 18 Dec 2018 18:21:09 +0100 [thread overview]
Message-ID: <20181218172109.GK15430@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20181218165217.GA534@tigerII.localdomain>
On Wed, Dec 19, 2018 at 01:52:17AM +0900, Sergey Senozhatsky wrote:
> On (12/18/18 16:24), Borislav Petkov wrote:
> > On Wed, Dec 19, 2018 at 12:14:55AM +0900, Sergey Senozhatsky wrote:
> > > Right, but unlike log_buf_len, devkmsg is a bit close to a "binary" knob:
> > > either all messages or none;
> >
> > ... which is perfectly fine for a debugging session.
>
> But devkmsg ratelimits systemd errors, so one does not even know that
> "some debugging is required". For instance from my x86 box:
>
> Unmounting /home...
> [..]
> home.mount: Mount process exited, code=exited status=32
> Failed unmounting /home.
>
> I don't want to debug systemd, I want to know that something didn't
> work out. 10 messages max and 5 seconds interval looks a bit too strict.
Again, complain to system-doofus for printing so much crap to somewhere
it should not print to begin with.
next prev parent reply other threads:[~2018-12-18 17:21 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-18 9:18 [RFC][PATCH] printk: increase devkmsg write() ratelimit Sergey Senozhatsky
2018-12-18 10:48 ` Peter Zijlstra
2018-12-18 11:17 ` Sergey Senozhatsky
2018-12-18 11:29 ` Peter Zijlstra
2018-12-18 13:09 ` Sergey Senozhatsky
2018-12-18 11:47 ` Borislav Petkov
2018-12-18 13:07 ` Sergey Senozhatsky
2018-12-18 14:26 ` Borislav Petkov
2018-12-18 14:55 ` Sergey Senozhatsky
2018-12-18 15:03 ` Borislav Petkov
2018-12-18 15:14 ` Sergey Senozhatsky
2018-12-18 15:24 ` Borislav Petkov
2018-12-18 16:52 ` Sergey Senozhatsky
2018-12-18 17:21 ` Peter Zijlstra [this message]
2018-12-18 17:37 ` Steven Rostedt
2018-12-19 8:50 ` Petr Mladek
2018-12-20 11:35 ` Sergey Senozhatsky
2018-12-20 13:58 ` Steven Rostedt
2018-12-21 7:32 ` Sergey Senozhatsky
2018-12-18 17:47 ` Borislav Petkov
2018-12-19 1:46 ` Sergey Senozhatsky
2018-12-18 14:02 ` Sergey Senozhatsky
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