linux-kernel - Re: random(4) changes

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Message-ID: <31776489.IE3eGLxohC@positron.chronox.de>
Date:	Mon, 25 Apr 2016 19:25:55 +0200
From:	Stephan Mueller <smueller@...onox.de>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Sandy Harris <sandyinchina@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-crypto@...r.kernel.org, Theodore Ts'o <tytso@....edu>,
	Jason Cooper <jason@...edaemon.net>,
	John Denker <jsd@...n.com>, "H. Peter Anvin" <hpa@...or.com>
Subject: Re: random(4) changes

Am Montag, 25. April 2016, 09:06:03 schrieb Andi Kleen:

Hi Andi,

> Sandy Harris <sandyinchina@...il.com> writes:
> 
> There is also the third problem of horrible scalability of /dev/random
> output on larger systems, for which patches are getting ignored.
> 
> https://lkml.org/lkml/2016/2/10/716
> 
> Ignoring problems does not make them go away.

I have seen your patches, but I am not fully sure I understand the root cause. 
is the noise source handling the issue or the random number generation the 
issue?

If it is the latter, can you explain where the scalability issue comes in?
> 
> -Andi


Ciao
Stephan