From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <owner-linux-mm@kvack.org>
Received: from mail-io0-f197.google.com (mail-io0-f197.google.com [209.85.223.197])
	by kanga.kvack.org (Postfix) with ESMTP id E7F76800DD
	for <linux-mm@kvack.org>; Wed, 24 Jan 2018 04:36:39 -0500 (EST)
Received: by mail-io0-f197.google.com with SMTP id q18so3596946ioh.4
        for <linux-mm@kvack.org>; Wed, 24 Jan 2018 01:36:39 -0800 (PST)
Received: from merlin.infradead.org (merlin.infradead.org. [2001:8b0:10b:1231::1])
        by mx.google.com with ESMTPS id j131si11461252ioj.178.2018.01.24.01.36.38
        for <linux-mm@kvack.org>
        (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256);
        Wed, 24 Jan 2018 01:36:39 -0800 (PST)
Date: Wed, 24 Jan 2018 10:36:07 +0100
From: Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH v5 0/2] printk: Console owner and waiter logic cleanup
Message-ID: <20180124093607.GK2269@hirez.programming.kicks-ass.net>
References: <20180110132418.7080-1-pmladek@suse.com>
 <20180110140547.GZ3668920@devbig577.frc2.facebook.com>
 <20180110162900.GA21753@linux.suse>
 <20180110170223.GF3668920@devbig577.frc2.facebook.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20180110170223.GF3668920@devbig577.frc2.facebook.com>
Sender: owner-linux-mm@kvack.org
List-ID: <linux-mm.kvack.org>
To: Tejun Heo <tj@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>, Linus Torvalds <torvalds@linux-foundation.org>, akpm@linux-foundation.org, Steven Rostedt <rostedt@goodmis.org>, Sergey Senozhatsky <sergey.senozhatsky@gmail.com>, linux-mm@kvack.org, Cong Wang <xiyou.wangcong@gmail.com>, Dave Hansen <dave.hansen@intel.com>, Johannes Weiner <hannes@cmpxchg.org>, Mel Gorman <mgorman@suse.de>, Michal Hocko <mhocko@kernel.org>, Vlastimil Babka <vbabka@suse.cz>, Jan Kara <jack@suse.cz>, Mathieu Desnoyers <mathieu.desnoyers@efficios.com>, Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>, rostedt@home.goodmis.org, Byungchul Park <byungchul.park@lge.com>, Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>, Pavel Machek <pavel@ucw.cz>, linux-kernel@vger.kernel.org

On Wed, Jan 10, 2018 at 09:02:23AM -0800, Tejun Heo wrote:
> 1. Console is IPMI emulated serial console.  Super slow.  Also
>    netconsole is in use.

So my IPMI SoE typically run at 115200 Baud (or higher) and I've not had
trouble like that (granted I don't typically trigger OOM storms, but
they do occasionally happen).

Is your IPMI much slower and not fixable to be faster?

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>